Multiplex Control Systems: Diagnosis Mitsubishi Eclipse III

SELF-DIAGNOSTIC SYSTEM

Note. Ensure ignition switch is in OFF position when connecting or disconnecting scan tool.

BEFORE CARRYING OUT TROUBLESHOOTING

Before carrying out troubleshooting, check the following two items.

1. Make sure that the ETACS-ECU, the junction block (J/B), the front-ECU and the engine compartment relay box are connected securely.
2. Make sure that fuses and fusible links related to relevant systems are not blown.

SWS DIAGNOSTIC TROUBLESHOOTING STRATEGY

1. Gather information about the problem from the customer.
2. Verify that the condition described by the customer exists. NOTE: If an error occurs in the SWS communication line, the ECU isolated from the communication line performs a fail-safe or backup operation, so the problem may not match the one shown in the Trouble Symptom Chart. However, the cause of the failure can be tracked down by performing the following troubleshooting with the SWS monitor.
3. Version number and destination check. Check whether the SWS version number (1) and destination (North America) meet the vehicle specifications. If they are different, replace the ETACS-ECU with a correct one.
4. ECU check on the SWS monitor. Check whether the communication status of the input- or output-signal-side ECU associated with the defective function is normal. If "OK" is displayed for all related ECUs, they communicate with each other normally and the input or output signal circuit system may be defective. Therefore, check SWS monitor service data. If "NG" is displayed for any of the related ECUs, something may be wrong with the ECU for which "NG" appears, its power supply or grounding system, or a wiring harness or connector between the SWS monitor and the ECU. Check the wiring harness and connectors associated with the ECU and examine the ECU itself.
5. Service data on the SWS monitor. Select the defective function from the function-specific diagnostic menu, and check the service data that appears for each function item. NOTE: In addition to the function-specific diagnostic menu, a service data menu is available for SWS monitor service data to check all items for each ECU. When the SWS communication line is monitored. You can determine whether the problem lies in the input or output signal circuit system by checking whether communication data is correct. The switch condition does not meet the service data display: Input signal system related to defective functions The switch condition meets the service data display: Output signal system related to defective functions
6. Check of input signal circuit system. Check relevant switch, sensor, input signal-side ECU and their wiring harness and connector.
7. Check of output signal circuit system. Check an output signal-side ECU, electrical load components and their wiring harness and connector.

FUNCTION DIAGNOSIS

The illustrations show the service data and their normal condition, which are displayed during the "FUNCTION DIAGNOSIS." The row "Normal conditions" shows values, which are shown when each operation is made. See Function Diagnosis Service Data (Wiper) - Function Diagnosis Service Data (Theft Alarm) .

Function Diagnosis Service Data (Wiper)

Function Diagnosis Service Data (Rear Wiper)

Function Diagnosis Service Data (Lighting)

Function Diagnosis Service Data (Turn Signal)

Function Diagnosis Service Data (Buzzer)

Function Diagnosis Service Data (Sunroof)

Function Diagnosis Service Data (Theft Alarm)

Troubleshooting Hints

1. Malfunction Of The SWS Monitor Body (I/F Cartridge)
2. Malfunction Of The SWS Monitor Harness
3. Malfunction Of The ETACS-ECU
4. Damaged Harness Wires Or Connectors

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

1. Check SWS Monitor Kit MB991862 For Proper Connection - Is SWS monitor kit MB991862 connected with the column switch properly? YES: Go to next step. NO: Connect SWS monitor kit MB991862 to the column switch securely.
2. Check The Power Supply Circuit To The ETACS-ECU - Does the system communicate with scan tool MB991502 when the ignition switch is turned to the "ON" position? YES: Go to next step. NO: See «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
3. Measure At ETACS-ECU Connector C-119 In Order To Check The Ground Circuit To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the resistance value between terminal 3 and ground. (Scheme 1) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 6. NO: Go to next step.
4. Check ETACS-ECU Connector C-119 For Damage - (Scheme 2) Is ETACS-ECU connector C-119 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the SWS monitor normally.
5. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ground - Also check junction block connector C-108. (Scheme 3) If junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the SWS monitor kit normally.
6. Check ETACS-ECU Connector C-118 And Data Link Connector C-29 For Damage - (Scheme 4)and (Scheme 5). Are ETACS-ECU connector C-118 and data link connector C-29 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the SWS monitor kit normally.
7. Check The Wiring Harness Between ETACS-ECU Connector C-118 And Data Link Connector C-29 - Also check joint connector C-77. (Scheme 6) If joint connector C-77 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 118 and data link connector C-29 in good condition? YES: Replace the ETACS-ECU. The system should communicate with the SWS monitor kit normally. NO: Repair the wiring harness. The system should communicate with the SWS monitor kit normally.

1. Malfunction Of The ETACS-ECU
2. Malfunction Of The Column Switch
3. Damaged Harness Wires Or Connectors

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: ETACS-ECU Column-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "ETACS ECU" and "COLUMN ECU" menus? "OK" are displayed for all the items: Go to next step. "NG" is displayed on the "COLUMN ECU" menu: Go to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). "NG" is displayed on the "ETACS ECU" menu: Go to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). "NG" displayed on the "ETACS ECU" and "COLUMN ECU" menu.: Go to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check Column Switch Connector C-86 For Damage - (Scheme 8) Is column switch connector C-86 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the column switch (column-ECU) normally.
3. Check At Column Switch Connector C-86 By Backprobing In Order To Check The Power Supply Circuit To The Column Switch (Through The Battery) - Measure at column switch connector C-86 without disconnecting the connector. Measure the voltage between terminal 1 and ground by backprobing. (Scheme 9) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to step 6. NO: Go to next step.
4. Check Column Switch Connector C-86 For Damage - Is column switch connector C-86 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the column switch (column-ECU) normally.
5. Check The Wiring Harness Between Column Switch Connector C-86 And The Battery - Also check joint connector C-78 and intermediate connector C-89. (Scheme 10) If joint connector C-78 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between column switch connector C-86 and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the column switch (column-ECU) normally.
6. Measure At Column Switch Connector C-86 In Order To Check The Ground Circuit To The Column Switch - Disconnect column switch connector C-86, and measure at the wiring harness side. Measure the resistance value between terminal 4 and ground. (Scheme 11) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 9. NO: Go to next step.
7. Check Column Switch Connector C-86 For Damage - Is column switch connector C-86 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the column switch (column-ECU) normally.
8. Check The Wiring Harness Between Column Switch Connector C-86 And Ground - Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between column switch connector C-86 and the ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the column switch (column-ECU) normally.
9. Check Column Switch Connector C-86 And ETACS-ECU Connector C-118 For Damage - Are column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the column switch (column-ECU) normally.
10. Check The Wiring Harness Between Column Switch Connector C-86 And ETACS-ECU Connector C-118 - Also check joint connector C-78. (Scheme 10) If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to step 13. NO: Repair the wiring harness. The system should communicate with the column switch (column-ECU) normally.
11. Check Column Switch Connector C-86 And ETACS-ECU Connector C-118 For Damage - (Scheme 4) Are column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the column switch (column-ECU) normally.
12. Check The Wiring Harness Between Column Switch Connector C-86 And ETACS-ECU Connector C-118 - Is the wiring harness between column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair the wiring harness. The system should communicate with the column switch (column-ECU) normally.
13. Replace The ETACS-ECU - Replace the column switch. The system should communicate with the column switch (column-ECU) normally. Can the system communicate with the column switch (column-ECU)? YES: No action to be taken. NO: Replace the ETACS-ECU. The system should communicate with the column switch (column-ECU) normally.

1. Malfunction Of The ETACS-ECU
2. Damaged Harness Wires Or Connectors

Scheme 12

Scheme 13

1. Measure At ETACS-ECU Connector C-119 In Order To Check The Battery Power Supply Circuit To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the voltage between terminal 20 and ground. (Scheme 12) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to step 4. NO: Go to next step.
2. Check ETACS-ECU Connector C-119 For Damage - (Scheme 2) Is ETACS-ECU connector C-119 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the ETACS-ECU normally.
3. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Battery - Also check joint connector C-78, junction block connector C-112 and intermediate connector C-89. (Scheme 10)and (Scheme 13). If joint connectors C-78, junction block connector C-112 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the ETACS-ECU normally.
4. Measure At ETACS-ECU Connector C-119 In Order To Check The Ground Circuit To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the resistance value between terminal 3 and ground. (Scheme 1) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 7. NO: Go to next step.
5. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the ETACS-ECU normally.
6. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ground - Also check junction block connector C-108. (Scheme 3) If junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the ETACS-ECU normally.
7. Check Column Switch Connector C-86 And ETACS-ECU Connector C-118 For Damage - (Scheme 8)and (Scheme 4). Are column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the ETACS-ECU normally.
8. Check The Wiring Harness Between Column Switch Connector C-86 And ETACS-ECU Connector C-118 - Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Replace the ETACS-ECU. The system should communicate with the ETACS-ECU normally. NO: Repair the wiring harness. The system should communicate with the ETACS-ECU normally.

1. Malfunction Of The ETACS-ECU
2. Malfunction Of The Front-ECU
3. Damaged Harness Wires Or Connectors

Diagnosis

Scheme 14

Scheme 15

Scheme 16

Scheme 17

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to next step. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). "
2. Measure At Front-ECU Connector A-10X In Order To Check The Battery Circuit Of Power Supply System To The Front-ECU - Disconnect front-ECU connector A-10X, and measure at the relay box side. Measure the voltage between terminal 7 and ground. (Scheme 14) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to step 5. NO: Go to next step.
3. Check The Front-ECU Connector A-10X For Damage - (Scheme 15) Is front-ECU connector A-10X in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the front-ECU normally.
4. Check The Wiring Harness Between Front-ECU Connector A-10X And The Battery - Is the wiring harness between front-ECU connector A-10X and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the front-ECU normally.
5. Measure At Front-ECU Connector A-11X In Order To Check The Ground Circuit To The Front-ECU - Disconnect front-ECU connector A-11X, and measure at the relay box side. Measure the resistance value between terminal 31 and ground. (Scheme 16) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 8. NO: Go to next step.
6. Check The Front-ECU Connector A-11X For Damage - (Scheme 17) Is front-ECU connector A-11X in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the front-ECU normally.
7. Check The Wiring Harness Between Front-ECU Connector A-11X And The Ground - Is the wiring harness between front-ECU connector A- 11X and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the front-ECU normally.
8. Check The Front-ECU Connector A-11X And ETACS-ECU Connector C-118 For Damage - Are front-ECU connector A-11X and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair or replace the connector. The system should communicate with the front-ECU normally.
9. Check The Wiring Harness Between Front-ECU Connector A-11X And ETACS-ECU Connector C-118 - Also check joint connector C-78 and intermediate connector C-89. (Scheme 10) If joint connector C-78 or intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between front-ECU connector A-11X and ETACS-ECU connector C-118 in good condition? YES: Go to next step. NO: Repair the wiring harness. The system should communicate with the front-ECU normally.
10. Replace The ETACS-ECU - Replace the front-ECU. The system should communicate with the front-ECU normally. Can the system communicate with the front-ECU? YES: No action to be taken. NO: Replace the ETACS-ECU. The system should communicate with the front-ECU normally.

1. Malfunction Of The Sunroof Motor Assembly
2. Damaged Harness Wires Or Connectors

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

1. Check Sunroof Motor Assembly Connector D-06 By Backprobing In Order To The Fusible Link (5) Line Of The Power Supply Circuit To The Sunroof Motor Assembly - Measure at sunroof motor assembly connector D-06 without disconnecting it. Measure the voltage between terminal 1 and ground by backprobing. (Scheme 18) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 4. NO: Go to Step 2.
2. Check Sunroof Motor Assembly Connector D-06 For Damage - (Scheme 19) Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
3. Check The Wiring Harness Between Sunroof Motor Assembly Connector D-06 And Fusible Link (5) - Also check intermediate connectors C-31 and C-89. (Scheme 20)and (Scheme 10). If intermediate connector C-31 or C-89 is damaged, repair or replace the connector. Is the wiring harness between sunroof motor assembly connector D-06 and fusible link (5) in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
4. Check Sunroof Motor Assembly Connector D-06 By Backprobing In Order To Check The Battery Line Of The Power Supply Circuit To The Sunroof Motor Assembly - Measure at sunroof motor assembly connector D-06 without disconnecting it. Measure the voltage between terminal 3 and ground by backprobing. (Scheme 21) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
6. Check The Wiring Harness Between Sunroof Motor Assembly Connector D-06 And Fusible Link (5) - Also check intermediate connectors C-31, C-89 and joint connector C-78. If intermediate connector C-31, C-89 and joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between sunroof motor assembly connector D-06 and fusible link (5) in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
7. Check Sunroof Motor Assembly Connector D-06 By Backprobing In Order To The Ignition Switch (IG2) Line Of The Power Supply Circuit To The Sunroof Motor Assembly - Measure at sunroof motor assembly connector D-06 without disconnecting it. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 2 and ground by backprobing. (Scheme 22) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 10. NO: Go to Step 8.
8. Check Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
9. Check The Wiring Harness Between Sunroof Motor Assembly Connector D-06 And Ignition Switch (IG2) - Also check junction block connectors C-102 and C-111. (Scheme 23) If junction block connector C-102 or C-111 is damaged, repair or replace the connector. Is the wiring harness between sunroof motor assembly connector D-06 and the ignition switch (IG2) in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
10. Measure At Sunroof Motor Assembly Connector D-06 In Order To Check The Ground Circuit To The Sunroof Motor Assembly - Disconnect sunroof motor connector D-06, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 24) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 13. NO: Go to Step 11.
11. Check Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 12. NO: Repair or replace the connector. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
12. Check The Wiring Harness Between Sunroof Motor Connector D-06 And Ground - Is the wiring harness between sunroof motor assembly connector D-06 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
13. Check Sunroof Motor Assembly Connector D-06 And ETACS-ECU Connector C-118 For Damage - (Scheme 4) Are sunroof motor assembly connector D-06 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 14. NO: Repair or replace the connector. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
14. Check The Wiring Harness Between Sunroof Motor Assembly Connector D-06 And ETACS-ECU Connector C- 118 - Also check intermediate connector C-31 and joint connector C-78. If intermediate connector C-31 or joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between sunroof motor assembly connector D-06 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 15. NO: Repair the wiring harness. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.
15. Replace The ETACS-ECU - Replace the sunroof motor assembly. The system should communicate with the sunroof motor assembly normally. Can the system communicate with the sunroof motor assembly? YES: No action to be taken. NO: Replace the ETACS-ECU. The system should communicate with the sunroof motor assembly (sunroof-ECU) normally.

1. Malfunction Of The Key Reminder Switch
2. Malfunction Of Front Door Switches
3. Malfunction Of The ETACS-ECU
4. Damaged Harness Wires Or Connectors

Scheme 25

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: OFF (key inserted) Driver's door: open Select "BUZZER-KEY RMND. ALM" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in illustration. (Scheme 25) Does the scan tool display the items "IG SW (IG1)", "DR DOOR SW" and "BUZZER" as normal condition? YES: Replace the ETACS-ECU. The ignition key reminder tone alarm function should work normally. NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: The scan tool does not show the respective normal condition for item "DR DOOR SW." Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000). NO: The scan tool does not show the respective normal condition for item "BUZZER." Go to Step 3.
3. Check The Input Signal (By Using The Pulse Check) - Check the input signals from the key reminder switch. Check whether scan tool MB991502 sounds or not when the ignition key is removed and reinserted. Does scan tool MB991502 sound when the ignition key is removed and reinserted? YES: Replace the ETACS-ECU. The ignition key reminder tone alarm function should work normally. NO: Refer to «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000).

1. Malfunction Of Front Door Switches
2. Malfunction Of Column Switch (Turn-Signal Light And Lighting Switch)
3. Malfunction Of The ETACS-ECU
4. Damaged Harness Wires Or Connectors

Scheme 26

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: ETACS-ECU Column-ECU Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "ETACS ECU" and "COLUMN ECU" menus? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "ETACS ECU" menu: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: OFF (key removed) Lighting switch: TAIL or HEAD Driver's door: open Select "BUZZER-LGT MONI. ALRM" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in illustration. (Scheme 26) Does the scan tool display "HEADLIGHT SW", "TAIL LIGHT SW", "IG SW IG1", "DR DOOR SW", "H/L AUTOCUT" and "BUZZER" as normal condition? YES: Replace the ETACS-ECU. The light reminder tone alarm function should work normally. NO: The scan tool does not show the respective normal condition for item "HEADLIGHT SW." Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000). NO: The scan tool does not show the respective normal condition for item "TAILLIGHT SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000). NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: The scan tool does not show the respective normal condition for item "DR DOOR SW." Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000). NO: The scan tool does not show the respective normal condition for item "H/L AUTO-CUT." Refer to «INSPECTION PROCEDURE J-9: HEADLIGHT, TAIL LIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-168713-S11959728262004111800000). NO: The scan tool does not show the respective normal condition for item "BUZZER." Replace the ETACS-ECU. The light reminder tone alarm function should work normally.

1. Malfunction of driver's seat belt switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Tun the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1). Select "ETACS-ECU" (DATA LIST), and check that item No. 30: IG SW (IG1) displays "ON". Does the scan tool display "IG SW (IG1)" as "ON"? YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000).
3. Check The Input Signal (By Using The Pulse Check) - Check input signal from the driver's side seat belt switch. When the driver's seat belt is fastened, check if scan tool MB991502 sounds or not. Does scan tool MB991502 sound when the driver's side seat belt is fastened? Yes: Replace the ETACS-ECU. Check that the seat belt tone alarm function works normally. No: Refer to «INSPECTION PROCEDURE P-3: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S SEAT BELT SWITCH»(ref-168713-S21357490402004111900000).

1. Malfunction of the ETACS-ECU
2. Damaged harness wires or connectors

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Measure At ETACS-ECU Connector C-119 In Order To Check The Fusible Link (1) Line Of Power Supply System To ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the voltage between terminal 2 and ground. (Scheme 27) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check ETACS-ECU Connector C-119 For Damage - (Scheme 2) Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. Check that the central door locking system works normally.
4. Check The Wiring Harness Between ETACS-ECU Connector C-119 And Fusible Link (1) - (Scheme 28) Also check junction block connector C-113 and intermediate connector C-89. (Scheme 29)and (Scheme 10). If junction block connector C-113 or intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and fusible link (1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the central door locking system works normally.
5. Check ETACS-ECU Connectors C-117, C-119 And Driver's Door Lock Actuator Connector E-13 For Damage - (Scheme 30) Are ETACS-ECU connectors C-117, C-119 and driver' door lock actuator connector E-13 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the central door locking system works normally.
6. Check The Wiring Harness From ETACS-ECU Connectors C-117 And C-119 To Driver's Door Lock Actuator Connector E-13 - Also check intermediate connector C-91 and junction block connector C-108. (Scheme 31) If intermediate connector C-91 or junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness from ETACS-ECU connectors C- 117 and C-119 to driver's door lock actuator connector E-13 in good condition? YES: Replace the ETACS-ECU. Check that the central door locking system works normally. NO: Repair the wiring harness. Check that the central door locking system works normally.

1. Malfunction of the driver's or front passenger's door lock actuator
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Scheme 36

1. Check Which Door Lock Is Defective - Which of the door locks is defective? Driver's door: Go to Step 2. Front passenger's door: Go to Step 5.
2. Check The Driver's Door Lock Actuator - Remove the driver's door lock actuator, and check it. (Scheme 32) Does the driver' door lock actuator work normally? YES: Go to Step 3. NO: Replace the driver' door lock actuator. Check that all the doors can be locked and unlocked normally.
3. Check ETACS-ECU Connectors C-117, C-119 And Driver' Door Lock Actuator Connector E-13 For Damage - (Scheme 33) Are ETACS-ECU connectors C-117, C-119 and driver's door lock actuator connector E-13 in good condition? YES: Go to Step 4. NO: Repair or check the connector. Check that all the doors can be locked and unlocked normally.
4. Check The Wiring Harness From ETACS-ECU Connectors C-117 And C-119 To Driver's Door Lock Actuator Connector E-13 - Also check junction block connector C-108 and intermediate connector C-91. (Scheme 31) If junction block connector C-108 or intermediate connector C-91 is damaged, repair or replace the connector. Is the wiring harness from ETACS-ECU connectors C- 117 and C-119 to driver's door lock actuator connector E-13 in good condition? YES: Replace the ETACS-ECU. Check that all the doors can be locked and unlocked normally. NO: Repair the wiring harness. Check that all the doors can be locked and unlocked normally.
5. Check The Front Passenger's Door Lock Actuator - Remove the passenger's door lock actuator, and check it. (Scheme 34) Is the front passenger's seat door lock actuator normal? YES: Go to Step 6. NO: Replace the front passenger's door lock actuator. Check that all the doors can be locked and unlocked normally.
6. Check ETACS-ECU Connector C-119 And Front Passenger's Door Lock Actuator Connector E-07 For Damage - (Scheme 35) Are ETACS-ECU connector C-119 and passenger's seat door lock actuator connector E-07 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that all the doors can be locked and unlocked normally.
7. Check The Wiring Harness From ETACS-ECU Connector C-119 To Front Passenger's Door Lock Actuator Connector E-07 - Also check junction block connector C-108 and intermediate connector C-95. (Scheme 36) If junction block connector C-108 or intermediate connector C-95 is damaged, repair or replace the connector. Is the wiring harness from ETACS-ECU connector C-119 to front passenger's door lock actuator connector E-07 in good condition? YES: Replace the ETACS-ECU. Check that all the doors can be locked and unlocked normally. NO: Repair the wiring harness. Check that all the doors can be locked and unlocked normally.

1. Malfunction of the power window switch (door lock switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Check The Input Signal (By Using The Pulse Check) - Check the input signals from the door lock switch

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. When the driver's or the front passenger's door lock switch is moved from "LOCK" to "UNLOCK" or vice versa, check if scan tool MB991502 sounds or not.

Does scan tool MB991502 sound when the driver's or the front passenger's door lock switch is moved from "LOCK" to "UNLOCK" or vice versa?

1. YES : Replace the ETACS-ECU. All the doors should be locked and unlocked by the door lock switch.
2. NO : Refer to «INSPECTION PROCEDURE P-7: ETACS-ECU DOES NOT RECEIVE AN AUTO-STOP SIGNAL FROM THE REAR WIPER MOTOR»(ref-168713-S42543864412004111900000) .

1. Malfunction of the power window switch (door lock switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Check The Input Signal (By Using The Pulse Check) - Check the input signals from the door lock key cylinder switch.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. When the doors are locked and unlocked by using the driver's or front passenger's door lock key cylinder, check that scan tool MB991502 sounds.

When the doors are locked and unlocked by using the driver's or front passenger's door lock key cylinder, does scan tool MB991502 sound?

1. YES : Replace the ETACS-ECU. All the doors should be locked and unlocked by using each door lock key cylinder switch.
2. NO : Refer to «INSPECTION PROCEDURE P-5: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR PASSENGER'S DOOR LOCK ACTUATOR SWITCH»(ref-168713-S32073915452004111200000) .

1. Malfunction of the driver's or front passenger's door lock actuator switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Check The Input Signal (By Using The Pulse Check) - Check the input signals from the driver's or front passenger's door lock actuator switch.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. When the driver's inside lock knob is locked or unlocked, check if scan tool MB991502 sounds or not.

Does scan tool MB991502 sound when the driver's or the front passenger's inside lock knob is moved from "LOCK" to "UNLOCK" or vice versa?

1. YES : Replace the ETACS-ECU. Check that all the doors can be locked or unlocked by operating the driver's inside lock knob.
2. NO : Refer to «INSPECTION PROCEDURE P-5: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR PASSENGER'S DOOR LOCK ACTUATOR SWITCH»(ref-168713-S32073915452004111200000) .

1. Malfunction of the key reminder switch
2. Malfunction of the driver's or front passenger's door switch
3. Malfunction of the driver's or front passenger's door lock actuator switch
4. Malfunction of the ETACS-ECU
5. Damaged harness wires or connectors

Scheme 37

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Open the driver's and front passenger's door (i.e. driver's and front passenger's door switch is open) in order to check the driver's and passenger's door switch. Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in illustration. (Scheme 37) Does scan tool shows the respective normal condition for item "DR DOOR SW" and "PASS DOOR SW." YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).
3. Check The Input Signal (By Using The Pulse Check) - Check the input signals from the following switches: Key reminder switch (remove and reinsert the ignition key). Driver's or front passenger's door lock actuator switch (turn on and off the driver's or front passenger's door lock actuator switch). If the switches, which are applicable for the input signal check, are operated, check if scan tool MB991502 sounds or not. Does scan tool MB991502 sound whenever the key reminder switch, the driver's and front passenger's door lock actuator switches are operated? YES: Replace the ETACS-ECU. The forgotten key prevention function should work normally. NO: Scan tool MB991502 does not sound when the key reminder switch is operated: Refer to «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000). NO: Scan tool MB991502 does not sound when the driver's or the front passenger's door lock actuator switch is operated: Refer to «INSPECTION PROCEDURE P-5: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR PASSENGER'S DOOR LOCK ACTUATOR SWITCH»(ref-168713-S32073915452004111200000).

1. Malfunction of power window relay
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 38

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Tun the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1). Select "ETACS-ECU" (DATA LIST), and check that ITEM NO. 30 - IG SW(IG1) displays "ON". Does the scan tool display "IG SW (IG1)" as "ON"? YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000).
3. Check The Power Window Relay - (Scheme 38) Is the power window relay normal? YES: Go to Step 4. NO: Replace the power window relay. Check that the power windows work normally.
4. Measure At Power Window Relay Connector C-116 In Order To Check The Fusible Link (5) Line Of Power Supply System To Power Window Relay - Disconnect power window relay connector C-116, and measure at the junction block side. Measure the voltage between terminal 5 and ground. (Scheme 39) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Power Window Relay Connector C-116 For Damage - (Scheme 40) Is power window relay connector C-116 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the power windows work normally.
6. Check The Wiring Harness Between Power Window Relay Connector C-116 And Fusible Link (5) - Also check junction block connector C-110 and intermediate connector C-89. (Scheme 41) If junction block connector C-110 and intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between power window relay connector C-116 and fusible link (5) in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the power windows work normally.
7. Measure At Power Window Relay Connector C-116 In Order To Check The Ground System To The Power Window Relay - Disconnect power window relay connector C-116, and measure at the junction block side. Measure the resistance value between terminal 3 and ground. (Scheme 42) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 10. NO: Go to Step 8.
8. Check Power Window Relay Connector C-116 For Damage - Is power window relay connector C-116 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. Check that the power windows work normally.
9. Check The Wiring Harness Between Power Window Relay Connector C-116 And Ground - Also check junction block connector C-108. (Scheme 43) If junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness between power window relay connector C-116 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the power windows work normally.
10. Check At Power Window Main Switch Connector E-12 In Order To Check The Power Window Main Switch Ground Circuit - Disconnect power window main switch connector E-12, and measure at the harness side. Measure the resistance value between terminal 9 and ground. (Scheme 44) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 13. NO: Go to Step 11.
11. Check Power Window Main Switch Connector E- 12 For Damage - (Scheme 45) Is power window main switch connector E-12 in good condition? YES: Go to Step 12. NO: Repair or replace the connector. Check that the power windows work normally.
12. Check The Wiring Harness Between Power Window Main Switch E-12 And Ground - Also check intermediate connector C-91. (Scheme 45) If intermediate connector C-91 is damaged, repair or replace the connector. Is the wiring harness between power window main switch connector E-12 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the power windows work normally.
13. Check At Power Window Main Switch Connector E-12 In Order To Check The Power Window Relay Circuit Of The Power Supply To The Power Window Main Switch - Disconnect power window main switch connector E-12, and measure at the harness side. Turn the ignition switch to "ON" position. Measure the voltage between terminal 6 and ground. (Scheme 46) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the power window main switch. Check that the power windows work normally. NO: Go to Step 14.
14. Check Power Window Relay Connector C-116 And ETACS-ECU Connector C-119 For Damage - (Scheme 47) Are power window relay connector C-116 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 15. NO: Repair or replace the connector. Check that the power windows work normally.
15. Check Power Window Relay Connector C-116 And Power Window Main Switch Connector E-12 For Damage - Are power window relay connector C-116 and power window main switch connector E-12 in good condition? YES: Go to Step 16. NO: Repair or replace the connector. Check that the power windows work normally.
16. Check The Wiring Harness Between Power Window Relay Connector C-116 And Power Window Main Switch Connector E-12 - Also check junction block connector C-111 and intermediate connector C-91. (Scheme 48) If junction block connector C-111 or intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between power window relay connector C-116 and power window main switch connector E-12 in good condition? YES: Replace the ETACS-ECU. Check that the power windows work normally. NO: Repair the wiring harness. Check that the power windows work normally.

1. Malfunction of front door switches
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 49

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 After the ignition switch is turned from "ON" position to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu within approximately one minute. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON to OFF Both front doors: closed Select "POWER WINDOW" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in illustration. (Scheme 49) Does the scan tool display the items "IG SW (IG1)", "DR DOOR SW" and "PASS DOOR SW" as normal condition? YES: Replace the ETACS-ECU. Check that the power window timer works normally. NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: The scan tool does not show the respective normal condition for item "DR DOOR SW" and "PASS DOOR SW." Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).

1. Malfunction of power window main switch
2. Malfunction of front power window motor (LH)
3. Damaged harness wires or connectors

Scheme 50

Scheme 51

Scheme 52

1. Check The Power Window Main Switch - Remove the power window main switch. Check continuity while power window main switch is moved to "UP" and "DOWN" position. (Scheme 50) Is the power window main switch normal? YES: Go to Step 2. NO: Replace the power window main switch. When the power window main switch is operated, the front power window (LH) should open and close normally.
2. Check The Front Power Window Motor (LH) - Remove the front power window motor (LH). Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 51) Is the front power window motor (LH) normal? YES: Go to Step 3. NO: Replace the front power window motor (LH). When the power window main switch is operated, the front power window (LH) should open and close normally.
3. Check Power Window Main Switch Connector E-12 And Front Power Window Motor (LH) Connector E-11 For Damage - (Scheme 52) Are power window main switch connector E-12 and front power window motor (LH) connector E-11 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. When the power window main switch is operated, the front power window (LH) should open and close normally.
4. Check The Wiring Harness Between Power Window Main Switch Connector E-12 And Front Power Window Motor (LH) Connector E-11 - Is the wiring harness between power window main switch connector E-12 and front power window motor (LH) connector E-11 in good condition? YES: No action to be taken. NO: Repair the wiring harness. When the power window main switch is operated, the front power window (LH) should open and close normally.

1. Malfunction of power window main switch
2. Malfunction of power window sub-switch
3. Malfunction of power window motor (RH)
4. Damaged harness wires or connectors

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

Scheme 60

Scheme 61

Scheme 62

Scheme 63

1. Check The Continuity Of The Power Window Main Switch - Remove the power window main switch. Check continuity when the switch on the power window main switch is operated to "UP" or "DOWN" position. (Scheme 53) Is the power window main switch normal? YES: Go to Step 2. NO: Replace the power window main switch. When the power window sub-switch is operated, the power window (RH) should open or close normally.
2. Check The Power Window Lock Switch - Is the power window lock switch at the "UNLOCK" position? YES: Go to Step 3. NO: Operate the power window lock switch to the "UNLOCK" position? When the power window subswitch is operated, the power window (RH) should open or close normally.
3. Check The Continuity Of The Power Window Subswitch - Remove the power window sub-switch. Check continuity when the power window sub-switch is operated to "UP" or "DOWN" position. (Scheme 54) Is the power window sub-switch normal? YES: Go to Step 4. NO: Replace the power window sub switch. When the power window sub-switch is operated, the power window (RH) should open or close normally.
4. Check The Front Power Window Motor (RH) - Remove the front power regulator assembly (RH). Connect a battery to the motor terminal, and check that the motor runs freely. (Scheme 55) Is the front power window motor (RH) normal? YES: Go to Step 5. NO: Replace the front power regulator assembly (RH). When the power window sub-switch is operated, the power window (RH) should open or close normally.
5. Check At Front Power Window Sub-Switch Connector E-05 In Order To Check The Power Window Relay Circuit Of The Power Supply To The Power Window Subswitch - Disconnect power window sub-switch connector E-05, and measure at the harness side. Measure the voltage between terminal 7 and ground. (Scheme 56) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 8. NO: Go to Step 6.
6. Check Power Window Relay Connector C-116 And Front Power Window Sub-Switch Connector E-05 For Damage - (Scheme 57) Are power window relay connector C-116 and power window sub-switch connector E-05 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. When the power window sub-switch is operated, the power window (RH) should open or close normally.
7. Check The Wiring Harness Between Power Window Relay Connector C-116 And Power Window Sub Switch Connector E-05 - Also check junction block connector C-111 and intermediate connector C-95. (Scheme 58) If junction block connector C-111 or intermediate connectors C-95 is damaged, repair or replace the connector. Is the wiring harness between power window relay connector C-116 and power window sub switch connector E-05 in good condition? YES: No action to be taken. NO: Repair the wiring harness. When the power window sub-switch is operated, the power window (RH) should open or close normally.
8. Measure At Power Window Sub Switch Connector E-05 In Order To Check The Ground Circuit To The Power Window Sub Switch - Disconnect power window sub-switch connector E-05, and measure at the harness side. Measure the resistance value between terminal 8 and ground. (Scheme 59) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 11. NO: Go to Step 9.
9. Check Power Window Main Switch Connector E-12 And Front Power Window Sub-Switch (Rh) Connector E-05 For Damage - (Scheme 60) Are power window main switch connector E-12 and power window sub-switch connector E-05 in good condition? YES: Go to Step 10. NO: Repair or replace the connector. When the power window sub-switch is operated, the power window (RH) should open or close normally.
10. Check The Wiring Harness Between Power Window Main Switch Connector E-12 And Power Window Sub-Switch Connector E-05 - Also check intermediate connectors C-91 and C-95. (Scheme 61) If intermediate connectors C-91 or C-95 is damaged, repair or replace the connector. Is the wiring harness between power window main switch connector E-12 and power sub-switch connector E-05 in good condition? YES: Replace the power window main switch. When the power window sub-switch is operated, the power window (RH) should open or close normally. NO: Repair the wiring harness. When the power window sub-switch is operated, the power window (RH) should open or close normally.
11. Measure At Power Window Sub Switch Connector E-05 In Order To Check The Ground Circuit To The Power Window Sub Switch - Disconnect power window sub-switch connector E-05, and measure at the harness side. Measure the resistance value between terminal 5 and ground. (Scheme 62) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 14. NO: Go to Step 12.
12. Check Power Window Main Switch Connector E-12 And Front Power Window Sub-Switch (RH) Connector E- 05 For Damage - Are power window main switch connector E-12 and power window sub-switch connector E-05 in good condition? YES: Go to Step 13. NO: Repair or replace the connector. When the power window sub-switch is operated, the power window (RH) should open or close normally.
13. Check The Wiring Harness Between Power Window Main Switch Connector E-12 And Power Window Sub-Switch Connector E-05 - Also check intermediate connectors C-91 and C-95. If intermediate connectors C-91 or C-95 is damaged, repair or replace the connector. Is the wiring harness between power window main switch connector E-12 and power sub-switch connector E-05 in good condition? YES: Replace the power window main switch. When the power window sub-switch is operated, the power window (RH) should open or close normally. NO: Repair the wiring harness. When the power window sub-switch is operated, the power window (RH) should open or close normally.
14. Check Power Window Sub-Switch Connector E-05 And Front Power Window Motor (RH) Connector E-04 For Damage - Are power window sub-switch connector E-05 and front power window motor (RH) connector E-04 in good condition? YES: Go to Step 15. NO: Repair or replace the connector. When the power window sub-switch is operated, the power window (RH) should open or close normally.
15. Check The Wiring Harness Between Power Window Sub-Switch Connector E-05 And Front Power Window Motor (Rh) Connector E-04 - (Scheme 63) Is the wiring harness between front power window main switch (RH) connector E-05 and front power window motor (RH) connector E-04 in good condition? YES: No action to be taken. NO: Repair the wiring harness. When the power window sub-switch is operated, the power window (RH) should open or close normally.

1. Malfunction of power window main switch

Check That Power Window Sub-Switches Operate Normally - Does the power window sub-switch operate the power window (RH)?

1. YES : Replace the power window main switch. When the power window main switch is operated, the power window (RH) should open or close normally.
2. NO : See appropriate POWER WINDOWS article for diagnosis.

1. Malfunction of the transmitter
2. Malfunction of the ETACS-ECU

1. Check The Central Door Locking System - Does the central door locking system work normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE C-1: CENTRAL DOOR LOCKING SYSTEM: THE CENTRAL DOOR LOCK SYSTEM DOES NOT WORK AT ALL»(ref-168713-S26330804492004111900000).
2. Check The Input Signal (By Using The Pulse Check) - Check input signals from the transmitter. Connect scan tool MB991502 to the data link connector. (Scheme 7) When the transmitter LOCK or UNLOCK switch is turned ON, check that scan tool MB991502 sounds. When the transmitter LOCK or UNLOCK switch is turned ON, does scan tool MB991502 sound? YES: Replace the ETACS-ECU. All the doors can be locked or unlocked by means of the transmitter. NO: Refer to «INSPECTION PROCEDURE P-13: TRANSMITTER: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM LOCK, UNLOCK, PANIC OR TRUNK SWITCH»(ref-168713-S11008917442003062700000).

1. Malfunction of the hazard warning lights
2. Malfunction of the theft-alarm horn
3. Malfunction of the horn
4. Malfunction of the dome light
5. Malfunction of the ETACS-ECU
6. Damaged harness wires or connectors

1. Check The Keyless Entry System - Does the keyless entry system work normally? YES : Go to Step 2. NO : Refer to «INSPECTION PROCEDURE E-1: KEYLESS ENTRY SYSTEM: KEYLESS ENTRY SYSTEM DOES NOT OPERATE»(ref-168713-S01644694792004112400000) .
2. Check The Answerback Adjustment Function - Check the answerback functions. (See appropriate POWER DOOR LOCKS & KEYLESS ENTRY SYSTEMS article.) Does the answerback function work normally? YES : No action to be taken. NO : Go to Step 3.
3. Check Trouble Symptom - Which answerback function is defective? Only the dome light : Go to Step 4. Only the turn-signal lights : Go to Step 5. Only the horns : Go to Step 6. None of the dome light, the turn-signal lights, and the horn : Replace the ETACS-ECU. Check that the answerback functions work normally.
4. Check The Dome Light - Does the dome light illuminate normally? YES : Replace the ETACS-ECU. Check that the answerback functions work normally. NO : Refer to «INSPECTION PROCEDURE M-1: INTERIOR LIGHT: DOME LIGHT, LUGGAGE COMPARTMENT LIGHT, TRUNK LIGHT AND DOOR-AJAR INDICATOR LIGHT DOES NOT ILLUMINATE OR TURN OFF NORMALLY»(ref-168713-S29977122912004112400000) .
5. Check The Hazard Warning Light - Do the hazard warning lights work normally? YES : Replace the ETACS-ECU. Check that the answerback functions work normally. NO : Refer to «INSPECTION PROCEDURE K-2: FLASHER TIMER: HAZARD WARNING LIGHTS DO NOT ILLUMINATE»(ref-168713-S25870793262004112400000) .
6. Check The Theft-Alarm System (Horn) - Does the theft-alarm system work normally? YES : Replace the ETACS-ECU. Check that the answerback functions work normally. NO : Refer to «INSPECTION PROCEDURE N-2: HORN DOES NOT SOUND WHEN THEFT-ALARM IS TRIGGERED»(ref-168713-S21893095782003062600000) .

1. Malfunction of the key reminder switch
2. Malfunction of the hazard warning light switch
3. Malfunction of the transmitter
4. Malfunction of the ETACS-ECU
5. Damaged harness wires or connectors

Scheme 64

1. Check Trouble Symptom - Can the encrypted code register mode be set? YES: Go to Step 3. NO: Go to Step 2.
2. Check The Input Signal (By Using The Pulse Check) - Check the input signals from the following switches: Key reminder switch Hazard warning light switch CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) If the switches (Scheme 64), which are applicable for the input signal check, are operated, check if scan tool MB991502 sounds or not. When the key reminder switch and the hazard warning light switch are operated, does scan tool MB991502 sound in each case? YES: Replace the ETACS-ECU. Check that the encrypted code can be registered in the transmitter. NO: Scan tool MB991502 does not sound when the ignition key is removed and reinserted: Refer to «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000). NO: Scan tool MB991502 does not sound when the hazard warning light switch is turned from "OFF" to "ON": Refer to «INSPECTION PROCEDURE P-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE HAZARD WARNING LIGHT SWITCH»(ref-168713-S27050527022004112400000).
3. Check The Transmitter - When the transmitter's battery is replaced, can the encrypted code be registered? YES: No action to be taken. NO: Replace the transmitter. If the encrypted code can not be registered by means of the new transmitter, replace the ETACS-ECU. Check that the encrypted code can be registered in the transmitter.

1. Malfunction of the sunroof switch
2. Malfunction of the sunroof motor assembly
3. Damaged harness wires or connectors

Scheme 65

Scheme 66

Scheme 67

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

1. Check The Sunroof Motor Assembly Power Supply Circuit [Fusible Link (5)] At The Sunroof Motor Assembly Connector D-06 By Backprobing - Do not disconnect the sunroof motor assembly connector D-06. Measure the voltage between terminal 1 and ground by backprobing. (Scheme 65) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 4. NO: Go to Step 2.
2. Check The Sunroof Motor Assembly Connector D-06 For Damage - (Scheme 66) Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 3. NO: Repair or replace it. The sunroof should work normally.
3. Check The Harness Wires Between Sunroof Motor Assembly Connector D-06 And Fusible Link (5) - (Scheme 67) After checking intermediate connectors C-31 and C-89, check the wires. If intermediate connectors C-31 or C-89 are damaged, repair or replace them. Are the harness wires between sunroof motor assembly connector D-06 and fusible link (5) in good condition? YES: No action to be taken. NO: Repair or replace them. The sunroof should work normally.
4. Check The Sunroof Motor Assembly Power Supply Circuit (Battery) At The Sunroof Motor Assembly Connector D-06 By Backprobing - Do not disconnect the sunroof motor assembly connector D-06. Measure the voltage between terminal 3 and ground by backprobing. (Scheme 68) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 6. NO: Repair or replace it. The sunroof should work normally.
6. Check The Harness Wires Between Sunroof Motor Assembly Connector D-06 And Battery - (Scheme 69) After checking joint connector C-78 and intermediate connector C-31 and C-89, check the wires. If joint connector C- 78 and intermediate connector C-31 or C-89 are damaged, repair or replace them. Are the harness wires between sunroof motor assembly connector D-06 and battery in good condition? YES: No action to be taken. NO: Repair or replace them. The sunroof should work normally.
7. Check The Sunroof Motor Assembly Power Supply Circuit [Ignition Switch (IG2)] At The Sunroof Motor Assembly Connector D-06 By Backprobing - Do not disconnect the sunroof motor assembly connector D-06. Turn the ignition switch to "ON" position. Measure the voltage between terminal 2 and ground by backprobing. (Scheme 70) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 10. NO: Go to Step 8.
8. Check The Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 9. NO: Repair or replace it. The sunroof should work normally.
9. Check The Harness Wires Between Sunroof Motor Assembly Connector D-06 And Ignition Switch (IG2) - After checking junction block connectors C-102 and C-111, check the wires. (Scheme 71) If junction block connectors C-102 or C-111 are damaged, repair or replace them. Are the harness wires between sunroof motor assembly connector C-08 and ignition switch (IG2) in good condition? YES: No action to be taken. NO: Repair or replace them. The sunroof should work normally.
10. Check The Sunroof Motor Assembly Ground Circuit At The Sunroof Motor Assembly Connector D-06 - Disconnect the sunroof motor assembly connector D-06 and measure at the harness side. Measure the resistance between terminal 5 and ground. (Scheme 72) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 13. NO: Go to Step 11.
11. Check The Sunroof Motor Assembly Connector D-06 For Damage - Is sunroof motor assembly connector D-06 in good condition? YES: Go to Step 12. NO: Repair or replace it. The sunroof should work normally.
12. Check The Harness Wire Between Sunroof Motor Assembly Connector D-06 And Ground - Is the harness wire between sunroof motor assembly connector D-06 and ground in good condition? YES: No action to be taken. NO: Repair it. The sunroof should work normally.
13. Check The Sunroof Switch - (Scheme 73) Does the sunroof switch test as specified? YES: Go to Step 14. NO: Replace the sunroof switch. The sunroof should work normally.
14. Check The Sunroof Switch Ground Circuit At The Sunroof Switch Connector D-05 - Disconnect the sunroof switch connector D-05 and measure at the harness side. Measure the resistance between terminal 4 and ground. (Scheme 74) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 17. NO: Go to Step 15.
15. Check The Sunroof Switch Connector D-05 For Damage - Is sunroof switch connector D-05 in good condition? YES: Go to Step 16. NO: Repair or replace it. The sunroof should work normally.
16. Check The Harness Wire Between Sunroof Switch Connector D-05 And Ground - Is the harness wire between sunroof switch connector D-05 and ground in good condition? YES: No action to be taken. NO: Repair it. The sunroof should work normally.
17. Check The Sunroof Switch Connector D-05 And Sunroof Motor Assembly Connector D-06 For Damage - Are sunroof switch connector D-05 and sunroof motor assembly connector D-06 in good condition? YES: Replace the sunroof motor assembly. Check that the sunroof works normally. NO: Repair or replace them. The sunroof should work normally.

1. Malfunction of the sunroof switch
2. Malfunction of the sunroof motor assembly
3. Damaged harness wires or connectors

Check The Input Signal (By Using The Pulse Check) - Check the input signals from the sunroof switch.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. When each function of the sunroof switch is operated (turned on), check that scan tool MB991502 sounds.

Does scan tool MB991502 sound when the sunroof switch is operated?

1. YES : Replace the sunroof motor assembly. Check that the sunroof works at all positions normally.
2. NO : Refer to «INSPECTION PROCEDURE O-10: SUNROOF SWITCH: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE UP, OPEN OR CLOSE/DOWN SWITCH»(ref-168713-S15730499952004112400000) .

1. Malfunction of the driver's or front passenger's door switch
2. Malfunction of the sunroof motor assembly
3. Damaged harness wires or connectors

Scheme 75

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: ETACS-ECU Sunroof-ECU Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "ETACS ECU" and "SUNROOF ECU" menu? OK are displayed for all the items: Go to Step 2. NG is displayed on the "ETACS ECU" menu: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). NG is displayed on the "SUNROOF ECU" menu: Refer to «INSPECTION PROCEDURE A-5: COMMUNICATION WITH THE SUNROOF MOTOR ASSEMBLY (SUNROOF-ECU) IS IMPOSSIBLE»(ref-168713-S34787553092004111800000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Turn the ignition switch to the "OFF" position to check the input signals from the following switches. Select "SUNROOF - SUNROOF OPE." (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 75) Are normal conditions displayed on the "IG SW (IG1)" and "S/R ECU ACK"? YES: Replace the sunroof motor assembly. Check that the sunroof timer function works normally. NO: Normal condition is not displayed on the "IG SW(IG1)": Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: Normal condition is not displayed on the "S/R ECU ACK": Replace the sunroof motor assembly. Check that the sunroof timer function works normally.

Troubleshooting Hint

Malfunction of the sunroof motor assembly

Replace the sunroof motor assembly. The sunroof safety mechanism should work normally.

1. Malfunction of the wiper motor
2. Malfunction of the column switch (windshield wiper and washer switch)
3. Malfunction of the front-ECU
4. Damaged harness wires or connectors

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: Column-ECU Front-ECU Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000). "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ACC Windshield wiper switch: INT Select "WIPER - F. WIPER INT" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 76) Does the scan tool display the items "INT WIPER" and "FRONT ECU ACK" as normal condition? YES: Go to Step 3. NO: The scan tool does not show the respective normal condition for item "INT WIPER SW." Replace the column switch. Check that the windshield wiper works normally. NO: The scan tool does not show the respective normal condition for item "FRONT ECU SW." Replace the front-ECU. Check that the windshield wiper works normally.
3. Check The Windshield Wiper Motor - Disconnect windshield wiper motor connector A-03. Connect a battery to the windshield wiper motor as illustrated. (Scheme 77) Then check the windshield wiper motor operates normally at high and low speeds. Does the windshield wiper motor operate normally? YES: Go to Step 4. NO: Replace the windshield wiper motor. Check that the windshield wiper works normally.
4. Check At Windshield Wiper Motor Connector A-03 To Check The Windshield Wiper Motor Ground Circuit - Disconnect windshield wiper motor connector A-03, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 78) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Windshield Wiper Motor Connector A-03 For Damage - (Scheme 79) Is windshield wiper motor connector A-03 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the windshield wiper works normally.
6. Check The Wiring Harness Between Windshield Wiper Motor Connector A-03 And Ground - Is the wiring harness between windshield wiper motor connector A-03 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the windshield wiper works normally.
7. Measure At Front-ECU Connector A-11X In Order To Check The Ignition Switch (IG2) Line Of Power Supply System To The Front-ECU - Disconnect front-ECU connector A-11X, and measure at the relay box side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 30 and ground. (Scheme 80) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the front-ECU. Check that the windshield wiper works normally. NO: Go to Step 8.
8. Check The Front-ECU Connector A-11X For Damage - (Scheme 81) Is front-ECU connector A-11X in good condition? YES: Go to Step 9. NO: Repair or replace the connector. Check that the windshield wiper works normally.
9. Check The Wiring Harness Between Front-ECU Connector A-11X And The Ignition Switch (IG2) - Also check intermediate connector C-89, junction block connectors C-111 and C-112. (Scheme 82) If intermediate connectors C-89 or junction block connector C-111 or C-112 is damaged, repair or replace the connector. Is the wiring harness between front-ECU connector A-11X and the ignition switch (IG2) in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the windshield wiper works normally.

1. Malfunction of the column switch (windshield wiper and washer switch)
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs

1. Column-ECU
2. Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS Monitor Kit MB991862 after turning on scan tool MB991502.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. Connect SWS Monitor Kit MB991862 to the column switch connector. see scheme 3
3. When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu.

Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu?

1. "OK" are displayed for all the items : Replace the front-ECU. Check that the windshield wiper works normally.
2. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000) .
3. "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000) .

1. Malfunction of the wiper motor
2. Malfunction of the column switch (windshield wiper and washer switch)
3. Malfunction of the front-ECU
4. Damaged harness wires and connectors

Scheme 83

Scheme 84

Scheme 85

1. Check The Input Signal By Using Service Data Of The SWS Monitor - Turn the ignition switch to the ACC position before checking input signals from the windshield wiper switch. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "COLUMN ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 83) Does the scan tool display all items "INT WIPER SW", "LO WIPER SW", "HI WIPER SW" and "MIST WIPER SW" as normal condition? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000).
2. Check The Windshield Wiper Motor - Disconnect windshield wiper motor connector A-03. Connect a battery to the windshield wiper motor as shown. (Scheme 77) Then check the windshield wiper motor operates normally at high and low speeds. Does the windshield wiper motor operate normally? YES: Go to Step 3. NO: Replace the windshield wiper motor. Check that the windshield wiper operates normally when the windshield wiper switch is moved to each position.
3. Check Windshield Wiper Motor Connector A-03 And Front-ECU Connector A-11X For Damage - (Scheme 84) Are windshield wiper motor connector A-03 and front- ECU connector A-11X in good condition? YES: Go to Step 4. NO: Repair or replace the connector. Check that the windshield wiper operates normally when the windshield wiper switch is moved to each position.
4. Check The Wiring Harness Between Windshield Wiper Motor Connector A-03 And Front-ECU Connector A-11X - Also check intermediate connector C-06. (Scheme 85) If intermediate connectors C-06 is damaged, repair or replace the connector. Is the wiring harness between windshield wiper motor connector A-03 and front-ECU connector A-11X in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the windshield wiper operates normally when the windshield wiper switch is moved to each position.

1. Malfunction of the windshield wiper motor
2. Malfunction of the front-ECU
3. Damaged harness wires and connectors

Scheme 86

Scheme 87

Scheme 88

Scheme 89

Scheme 90

1. Check The Windshield Wiper Motor - Disconnect windshield wiper motor connector A-03. Connect the vehicle battery to the windshield wiper motor connector as shown, and operate the windshield wiper at low speed. (Scheme 86) While the windshield wiper is working, disconnect the battery at positions other than the predetermined park position to stop the windshield wiper motor. When the battery is connected as shown, the motor should run at low speed, and then stop at the predetermined park position. Does the windshield wiper motor operate normally? YES: Go to Step 2. NO: Replace the windshield wiper motor. The windshield wiper should stop at the predetermined park position.
2. Measure At Windshield Wiper Motor Connector A- 03 To Check The Ignition Switch (ACC) Line Of The Power Supply To The Windshield Wiper Motor - Disconnect windshield wiper motor connector A-03, and measure at the wiring harness side. Turn the ignition switch to the "ACC" position. Measure the voltage between terminal 1 and ground. (Scheme 87) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Windshield Wiper Motor Connector A-03 For Damage - (Scheme 88) Is windshield wiper motor connector A-03 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. Check that the windshield wiper works normally.
4. Check The Wiring Harness Between Windshield Wiper Motor Connector A-03 And The Ignition Switch (ACC) - Also check intermediate connector C-94, junction block connectors C-111 and C-112. (Scheme 89) If intermediate connectors C-94 or junction block connector C-111 or C-112 is damaged, repair or replace the connector. Is the wiring harness between windshield wiper motor connector A-03 and the ignition switch (ACC) in good condition? YES: No action to be taken. NO: Repair the wiring harness. The windshield wiper should stop at the predetermined park position.
5. Check Windshield Wiper Motor Connector A-03 And Front-ECU Connector A-11X For Damage - (Scheme 90) Are windshield wiper motor connector A-03 and front- ECU connector A-11X in good condition? YES: Go to Step 6. NO: Repair or replace the connector. The windshield wiper should stop at the predetermined park position.
6. Check The Wiring Harness Between Windshield Wiper Motor Connector A-03 And Front-ECU Connector A-11X - Also check intermediate connector C-06. If intermediate connectors C-06 is damaged, repair or replace the connector. (Scheme 90) Is the wiring harness between windshield wiper motor connector A-03 and front-ECU connector A-11X in good condition? YES: Replace the front-ECU. The windshield wiper should stop at the predetermined park position. NO: Repair the wiring harness. The windshield wiper should stop at the predetermined park position.

1. Malfunction of the column switch (windshield wiper and washer switch)
2. Malfunction of the ETACS-ECU
3. Malfunction of the front-ECU
4. Damaged harness wires or connectors

Check The Input Signal By Using Service Data Of The SWS Monitor - Set each switch to the following condition to check input signals from the windshield intermittent wiper interval adjusting knob

1. Ignition switch: ACC
2. Windshield wiper switch: INT

Scheme 91

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3
3. Select "WIPER - F. WIPER INT" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 91) NOTE: Also check that the windshield wiper interval changes smoothly when the windshield intermittent wiper interval adjusting knob is rotated from "SLOW" to "FAST" positions.

Does the value change within the normal range when the windshield intermittent wiper interval adjusting knob is rotated?

1. YES : Replace the front-ECU. Check that the windshield intermittent wiper interval changes according to the vehicle speed or while the windshield intermittent wiper interval adjusting knob is rotated.
2. NO : Refer to «INSPECTION PROCEDURE O-9: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE WINDSHIELD INTERMITTENT WIPER INTERVAL ADJUSTING KNOB»(ref-168713-S06174667102004113000000) .

1. Malfunction of the ETACS-ECU
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Scheme 92

1. Check The Input Signal (By Using The Pulse Check) - Check the input of the vehicle speed signal: Connect scan tool MB991502 to the data link connector. (Scheme 7) Check that scan tool MB991502 sounds when the vehicle speed exceeds 10 km/h (6.2 mph). Does scan tool MB991502 sound when the vehicle speed exceeds 10 km/h (6.2 mph)? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE P-11: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM THE VEHICLE SPEED SENSOR (M/T)»(ref-168713-S24489790202004113000000) or «INSPECTION PROCEDURE P-12: ETACS-ECU DOES NOT RECEIVE VEHICLE SPEED SIGNAL (A/T)»(ref-168713-S09200981542004113000000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Set each switch to the following condition to check input signals from the windshield intermittent wiper interval adjusting knob: Ignition switch: ACC Windshield wiper switch: INT Intermittent wiper control: slow side (mph) CAUTION: Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "WIPER - F. WIPER INT" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 92) NOTE: Also check that the wiper interval changes smoothly when the vehicle is accelerated from 0 km/h (0 mph) to 25 km/h (15.5 mph). Does the value change within the normal range when the windshield intermittent wiper interval adjusting knob is rotated? YES: Replace the front-ECU. The windshield intermittent wiper interval should change according to the vehicle speed. NO: Replace the ETACS-ECU. The windshield intermittent wiper interval should change according to the vehicle speed.

1. Malfunction of the windshield washer motor
2. Malfunction of the column switch (windshield wiper and washer switch)
3. Malfunction of the front-ECU
4. Damaged harness wires or connectors

Scheme 93

Scheme 94

Scheme 95

Scheme 96

1. Check The Windshield Wiper - Does the windshield wiper operate normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE G-1: WINDSHIELD WIPER AND WASHER: WINDSHIELD WIPER DOES NO NOT WORK AT ALL»(ref-168713-S01058497672004113000000).
2. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: Column-ECU Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu? "OK" are displayed for all the items: Go to Step 3. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000). "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000).
3. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ACC Windshield washer switch: ON Select "WIPER - F. WIPER WASH" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 93) Does the scan tool display the items "FRONT WASH.SW" and "FRONT ECU ACK" as normal condition? YES: Go to Step 4. NO: The scan tool does not show the respective normal condition for item "FRONT WASH. SW." Replace the column switch. Check that the windshield washer works normally. NO: The scan tool does not show the respective normal condition for item "FRONT ECU SW." Replace the front-ECU. Check that the windshield washer works normally.
4. Check The Windshield Washer Motor - Disconnect windshield washer motor connector A-33, and check at windshield washer motor connector side. Fill the windshield washer tank with washer fluid. When battery voltage is applied between terminals 1 and 2, washer fluid should gush out. (Scheme 94) Does the windshield washer motor operate normally? YES: Go to Step 5. NO: Replace the windshield washer motor. Check that the windshield washer works normally.
5. Check At Windshield Washer Motor Connector A-33 To Check The Windshield Washer Motor Ground Circuit - Disconnect windshield washer motor connector A-33, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 95) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 8. NO: Go to Step 6.
6. Check Windshield Washer Motor Connector A-33 For Damage - (Scheme 96) Is windshield washer motor connector A-33 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that the windshield washer works normally.
7. Check The Wiring Harness Between Windshield Washer Motor Connector A-33 And Ground - Is the wiring harness between windshield washer motor connector A-33 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the windshield washer works normally.
8. Check Windshield Washer Motor Connector A-33 And Front-ECU Connector A-11X For Damage - (Scheme 96) Are windshield washer motor connector A-33 and front- ECU connector A-11X in good condition? YES: Go to Step 9. NO: Repair or replace the connector. Check that the windshield washer works normally.
9. Check The Wiring Harness Between Windshield Washer Motor Connector A-33 And Front-ECU Connector A-11X - Also check intermediate connector C-06. (Scheme 96) If intermediate connectors C-06 is damaged, repair or replace the connector. Is the wiring harness between windshield washer motor connector A-33 and front-ECU connector A-11X in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the windshield washer works normally.

1. Malfunction of the rear wiper motor
2. Malfunction of the column switch (windshield wiper and washer switch)
3. Malfunction of the ETACS-ECU
4. Damaged harness wires or connectors

Scheme 97

Scheme 98

Scheme 99

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: ETACS-ECU Column-ECU Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "ETACS-ECU" and "COLUMN ECU" menu? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "ETACS ECU" menu: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000). " "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ACC Rear wiper switch: INT Select "REAR WIPER - REAR WIPER" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in illustration. (Scheme 97) Are normal conditions displayed on the "REAR WIPER SW" and "IG SW (ACC)"? YES: Go to Step 3. NO: Normal condition is not displayed "REAR WIPER SW": Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000). NO: Normal condition is not displayed for "IG SW (ACC)": Refer to «INSPECTION PROCEDURE O-1: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (ACC)»(ref-168713-S15958812282004112400000).
3. Check The Rear Wiper Motor - Disconnect rear wiper motor connector F-07. Connect a battery to the wiper motor as shown in the illustration and inspect the motor operation. (Scheme 98) Is the rear wiper motor in good condition? YES: Go to Step 4. NO: Repair it. The rear wiper should work normally.
4. Check The Rear Wiper Motor Connector F-07 And ETACS-ECU Connector C-119 For Damage - (Scheme 99) Are rear wiper motor connector F-07 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 5. NO: Repair or replace them. The rear wiper should work normally.
5. Check The Harness Wires Between Rear Wiper Motor Connector F-07 And ETACS-ECU Connector C-119 - After checking intermediate connector F-24 and junction block connector C-101, check the wires. (Scheme 99) If intermediate connector F-24 and junction block connector C-101 are damaged, repair or replace them. Are the harness wires between rear wiper motor connector F-07 and ETACS-ECU connector C-119 in good condition? YES: Replace the ETACS-ECU. The rear wiper should work normally. NO: Repair them. The rear wiper should work normally.

1. Malfunction of the rear wiper motor
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Check The Input Signal (By Using The Pulse Check) - Check the automatic stop signal, which the rear wiper motor sends to the ETACS-ECU.

Note. When the rear wiper is operated, a signal is sent to the ETACS-ECU.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. When the rear wiper switch is operated (when the rear wiper started moving), check that scan tool MB991502 sounds.

Does scan tool MB991502 sound when the rear wiper switch is operated?

1. YES : Replace the ETACS-ECU. The rear wiper should stop automatically at the predetermined park position.
2. NO : Refer to «INSPECTION PROCEDURE P-7: ETACS-ECU DOES NOT RECEIVE AN AUTO-STOP SIGNAL FROM THE REAR WIPER MOTOR»(ref-168713-S42543864412004111900000) .

1. Malfunction of the park/neutral position switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 100

1. Check The Rear Wiper - Does the rear wiper operate? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NO NOT WORK AT ALL»(ref-168713-S32988929592004113000000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Set each switch to the following condition before checking input signal from the park/neutral position switch ("R" position). Ignition switch: ON Rear wiper switch: ON Shift position: R position CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "REAR WIPER-REV. INTERLOCK" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 100) Are normal conditions displayed? YES: Replace the ETACS-ECU. When the selector lever is moved to the "R" position, the rear wiper should operate consecutively approximately twice. NO: Refer to «INSPECTION PROCEDURE O-4: ETACS-ECU DOES NOT RECEIVE "R" POSITION SIGNAL FROM THE BACKUP LIGHT SWITCH (M/T)»(ref-168713-S17070469802004120100000) or «INSPECTION PROCEDURE O-5: ETACS-ECU DOES NOT RECEIVE "R" POSITION SIGNAL FROM THE PARK/ NEUTRAL POSITION SWITCH (A/T)»(ref-168713-S07366740652004120100000).

1. Malfunction of the rear washer motor
2. Malfunction of the column switch (windshield wiper and washer switch)
3. Malfunction of the ETACS-ECU

Scheme 101

Scheme 102

Scheme 103

Scheme 104

1. Check The Rear Wiper - Does the rear wiper operate? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NO NOT WORK AT ALL»(ref-168713-S32988929592004113000000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Set each switch to the following condition before checking input signals from the rear washer switch: Ignition switch: ACC Rear washer switch: ON CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "REAR WIPER - REAR WIPER" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 101) Are normal conditions displayed? YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000).
3. Check The Rear Washer Motor - Disconnect rear washer motor connector A-34. Fill the washer tank with washer fluid. When battery voltage is applied between terminals 1 and 2, washer fluid should gush out. (Scheme 102) Does the rear washer motor operate normally? YES: Go to Step 4. NO: Replace the rear washer motor. Check that the rear washer works normally.
4. Check At Rear Washer Motor Connector A-34 To Check The Rear Washer Motor Ground Circuit - Disconnect rear washer motor connector A-34, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 103) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Rear Washer Motor Connector A-34 For Damage - (Scheme 104) Is rear washer motor connector A-34 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the rear washer works normally.
6. Check The Wiring Harness Between Rear Washer Motor Connector A-34 And Ground - (Scheme 104) Is the wiring harness between rear washer motor connector A-34 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the rear washer works normally.
7. Check Rear Washer Motor Connector A-34 And ETACS-ECU Connector C-117 For Damage - (Scheme 104) Are rear washer motor connector A-34 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 8. NO: Repair or replace the connector. Check that the rear washer works normally.
8. Check The Wiring Harness Between Rear Washer Motor Connector A-34 And ETACS-ECU Connector C-117 - Also check intermediate connector C-94. (Scheme 104) If intermediate connector C-94 is damaged, repair or replace the connector. Is the wiring harness between rear washer motor connector A-34 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. Check that the rear washer works normally. NO: Repair the wiring harness. Check that the rear washer works normally.

1. Malfunction of driver's side seat belt switch
2. Malfunction of combination meter (seat belt warning light bulb or printed-circuit board)
3. Malfunction of the ETACS-ECU

Scheme 105

Scheme 106

Scheme 107

Scheme 108

Scheme 109

Scheme 110

Scheme 111

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Tun the ignition switch to the "ON" position before checking input signals from the ignition switch (IG1). Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 105) Does the scan tool display "IG SW (IG1)" as normal condition? YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000).
3. Check The Input Signal (By Using The Pulse Check) - Check input signal from the driver's side seat belt switch. When the driver's seat belt is fastened, check if scan tool MB991502 sounds or not. Does scan tool MB991502 sound when the driver's side seat belt is fastened? YES: Go to Step 4. NO: Refer to «INSPECTION PROCEDURE P-3: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S SEAT BELT SWITCH»(ref-168713-S21357490402004111900000).
4. Check At ETACS-ECU Connector C-118 In Order To Check The Ground Circuit To The Seat Belt Warning Light - Disconnect ETACS-ECU connector C-118, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Connect terminal No. 73 to ground. (Scheme 106) Does the seat belt warning light illuminate? YES: Replace the ETACS-ECU. Check that the seat belt warning light illuminates normally. NO: Go to Step 5.
5. Check The Seat Belt Warning Light Bulb - (Scheme 107) Is the seat belt warning light bulb in good condition? YES: Go to Step 6. NO: Replace the bulb. Check that the seat belt warning light illuminates normally.
6. Check The Combination Meter (Printed-Circuit Board) - Remove the combination meter. Remove the seat belt warning light bulb. Then measure the resistance value between the bulb terminals. Install the bulb to the combination meter, and then measure the resistance value between connector C-41 terminal 52 and connector C-42 terminal 27. (Scheme 108) The measured resistance value should be roughly the same as the value measured in Step (2). Are these two resistance values extremely different? YES: Repair or replace the combination meter (printed circuit board). Check that the seat belt warning light illuminates normally. NO (much the same): Go to Step 7.
7. Measure At Combination Meter Connector C-41 In Order To Check The Ignition Switch (IG1) Line Of The Power Supply To The Combination Meter - Disconnect combination meter connector C-41, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 52 and ground. (Scheme 109) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 10. NO: Go to Step 8.
8. Check Combination Meter Connector C-41 For Damage - (Scheme 110) Is combination meter connector C-41 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. Check that the seat belt warning light illuminates normally.
9. Check The Wiring Harness Between Combination Meter Connector C-41 And The Ignition Switch (IG1) - Also check junction block connectors C-108 and C-111. (Scheme 110) If junction block connector C-108 or C-111 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-41 and the ignition switch (IG1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the seat belt warning light illuminates normally.
10. Check Combination Meter Connector C-42 And ETACS-ECU Connector C-118 For Damage - (Scheme 111) Are combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 11. NO: Repair or replace the connector. Check that the seat belt warning light illuminates normally.
11. Check The Wiring Harness Between Combination Meter Connector C-42 And ETACS-ECU Connector C-118 - Is the wiring harness between combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the seat belt warning light illuminates normally.

1. Malfunction of the column switch (tail light switch)
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Scheme 112

Scheme 113

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: Column-ECU Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000). "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON Lighting switch: TAIL NOTE: Turn the ignition switch to the "ON" position in order to disable the headlight automatic shutdown function. Select "LIGHTING - TAIL LIGHT" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 112) Does the scan tool display the items "TAILLIGHT SW", "H/L AUTO-CUT" and "FRONT ECU ACK" as normal condition? YES: Go to Step 3. NO: The scan tool does not show the respective normal condition for item "TAILLIGHT SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000). NO: The scan tool does not show the respective normal condition for item "H/L AUTO-CUT." Refer to «INSPECTION PROCEDURE J-9: HEADLIGHT, TAIL LIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-168713-S11959728262004111800000). NO: The scan tool does not show the respective normal condition for item "FRONT ECU SW." Replace the front-ECU. Check that the tail lights illuminate normally.
3. Measure At Front-ECU Connector A-10X In Order To Check The Battery Circuit Of Power Supply System To The Front-ECU - Disconnect front-ECU connector A-10X, and measure at the relay box side. Measure the voltage between terminal 5 and ground. (Scheme 113) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the front-ECU. Check that the tail lights illuminate normally. NO: Go to Step 4.
4. Check The Front-ECU Connector A-10X For Damage - (Scheme 15) Is front-ECU connector A-10X in good condition? YES: Go to Step 5. NO: Repair or replace the connector. Check that the tail lights illuminate normally.
5. Check The Wiring Harness Between Front-ECU Connector A-10X And The Battery - Is the wiring harness between front-ECU connector A- 10X and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the tail lights illuminate normally.

1. Malfunction of column switch (turn-signal light and lighting switch)
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Scheme 114

Scheme 115

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: Column-ECU Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000). "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON Lighting switch: HEAD Select "LIGHTING - HEADLIGHT LO" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 114) Does the scan tool display the items "HEADLIGHT SW", "H/L AUTO-CUT" and "FRONT ECU ACK" as normal condition? YES: Go to Step 3. NO: The scan tool does not show the respective normal condition for item "HEADLIGHT SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000). NO: The scan tool does not show the respective normal condition for item "H/L AUTO-CUT." Refer to «INSPECTION PROCEDURE J-9: HEADLIGHT, TAIL LIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-168713-S11959728262004111800000). NO: The scan tool does not show the respective normal condition for item "FRONT ECU SW." Replace the ECU. Check that the headlights (lowbeam) illuminate normally.
3. Measure At Front-ECU Connector A-10X In Order To Check The Battery Circuit Of Power Supply System To The Front-ECU - Disconnect front-ECU connector A-10X, and measure at the relay box side. Measure the voltage between terminal 3 and ground. (Scheme 115) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the front-ECU. Check that the headlights (low-beam) illuminate normally. NO: Go to Step 4.
4. Check The Front-ECU Connector A-10X For Damage - (Scheme 15) Is front-ECU connector A-10X in good condition? YES: Go to Step 5. NO: Repair or replace the connector. Check that the headlights (low-beam) illuminate normally.
5. Check The Wiring Harness Between Front-ECU Connector A-10X And The Battery - Is the wiring harness between front-ECU connector A-10X and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the headlights (low-beam) illuminate normally.

1. Malfunction of column switch (turn-signal light and lighting switch)
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Scheme 116

1. Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs: Column-ECU Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu. Are "OK" displayed on the "COLUMN ECU" and "FRONT ECU" menu? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000). "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON Lighting switch: HEAD Dimmer switch: ON Select "LIGHTING - HEADLIGHT HI" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 116) Does the scan tool display the items "HEADLIGHT SW", "DIMMER SW", "H/L AUTO-CUT" and "FRONT ECU ACK" as normal condition? YES: Replace the front-ECU. Check that the headlights (high beam) illuminate normally. NO: The scan tool does not show the respective normal condition for item "HEADLIGHT SW." Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000). NO: The scan tool does not show the respective normal condition for item "DIMMER SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000). NO: The scan tool does not show the respective normal condition for item "H/L AUTO-CUT." Refer to «INSPECTION PROCEDURE J-9: HEADLIGHT, TAIL LIGHT: HEADLIGHT AUTOMATIC SHUTDOWN FUNCTION DOES NOT WORK NORMALLY»(ref-168713-S11959728262004111800000). NO: The scan tool does not show the respective normal condition for item "FRONT ECU SW." Replace the front-ECU. Check that the headlights (high beam) illuminate normally.

1. Malfunction of the column switch
2. Malfunction of the front-ECU
3. Damaged harness wires or connectors

Scheme 117

1. Check The Headlights - Do the headlights (low-beam and high-beam) illuminate normally? YES: Go to Step 2. NO: Headlights (low-beam) do not illuminate normally: Refer to «INSPECTION PROCEDURE J-2: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (LOW-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S33251963372004120200000). NO: Headlights (high-beam) do not illuminate normally: Refer to «INSPECTION PROCEDURE J-3: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (HIGH-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S41283862272004120200000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Tun the passing switch to the "ON" position before checking input signals from the passing switch. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "COLUMN ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 117) Does the scan tool display "PASSING SW" as normal condition? YES: Replace the front-ECU. When the passing switch is turned "ON", the headlights (low-beam and highbeam) should illuminate normally. NO: Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000).

1. Malfunction of the column switch
2. Malfunction of the front-ECU
3. Malfunction of the ETACS-ECU
4. Damaged harness wires and connectors

Use Scan Tool To Select "ECU Check" On The SWS Monitor Display - Check the following ECUs

1. ETACS-ECU
2. Column-ECU
3. Front-ECU CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3
3. When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ECU CHECK" menu.

Are "OK" displayed on the "ETACS ECU", "COLUMN ECU" and "FRONT ECU" menus?

1. "OK" are displayed for all the items : Replace the front- ECU. Check that the headlights and the tail lights illuminate normally.
2. "NG" is displayed on the "ETACS ECU" menu: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000) .
3. "NG" is displayed on the "COLUMN ECU" menu: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000) .
4. "NG" is displayed on the "FRONT ECU" menu: Refer to «INSPECTION PROCEDURE A-4: COMMUNICATION WITH THE FRONT-ECU IS IMPOSSIBLE»(ref-168713-S11359292052004111700000) .

1. Malfunction of the position light bulb
2. Malfunction of the stop/tail light bulb
3. Malfunction of the side marker light bulb
4. Malfunction of the license plate light bulb
5. Damaged harness wires or connectors

Scheme 118

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

Scheme 124

Scheme 125

1. Check The Operation Of Each Light - Which light does not illuminate? Position Light (LH), Tail Lights (LH), Side Marker Light (LH) And License Plate Light: Go To Step 2. Position Light (RH), Tail Lights (RH) And Side Marker Light (RH): Go To Step 4. Tail Lights, Side Marker Lights And License Plate Light: Go To Step 6. Tail Lights (LH), Side Marker Light (LH) And License Plate Light: Go To Step 8. Tail Lights (RH) And Side Marker Light (RH): Go To Step 10. Position Light (LH): Go To Step 12. Position Light (RH): Go To Step 18. Tail Light (LH): Go To Step 24. Tail Light (RH): Go To Step 30. Rear Side Marker Light (LH): Go To Step 36. Rear Side Marker Light (RH): Go To Step 42. License Plate Light: Go To Step 48. All Lights: Refer To «INSPECTION PROCEDURE J-1: HEADLIGHT, TAIL LIGHT: TAIL LIGHTS DOES NOT ILLUMINATE NORMALLY»(ref-168713-S30334998462004120100000).
2. Check Front Combination Light (LH) Connector A-26 And Front-ECU Connector A-10X For Damage - (Scheme 118) Are front combination light (LH) connector A-26 and front-ECU connector A-10X in good condition? YES: Go to Step 3. NO: Repair or replace the connector. The position light (LH), the tail light (LH), the side marker light (LH) and the license plate lights should illuminate normally.
3. Check The Wiring Harness Between Front Combination Light (LH) Connector A-26 And Front-ECU Connector A-10X - Also check joint connector C-77 and intermediate connector C-89. (Scheme 118) If joint connector C-77 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between front combination light (LH) connector A-26 and front-ECU connector A-10X in good condition? YES: No action to be taken. NO: Repair the wiring harness. The position light (LH), the tail light (LH), the side marker light (LH) and the license plate lights should illuminate normally.
4. Check Position Light (RH) Connector A-32 And Front-ECU Connector A-10X For Damage - (Scheme 118) Are position light (RH) connector A-32 and front-ECU connector A-10X in good condition? YES: Go to Step 5. NO: Repair or replace the connector. The position light (RH), the tail light (RH), and the side marker light (RH) should illuminate normally.
5. Check The Wiring Harness Between Position Light (RH) Connector A-32 And Front-ECU Connector A-10X - Also check intermediate connectors C-06 and C-89. (Scheme 118) If intermediate connector C-06 or C-89 is damaged, repair or replace the connector. Is the wiring harness between position light (RH) connector A-32 and front-ECU connector A-10X in good condition? YES: No action to be taken. NO: Repair the wiring harness. The position light (RH), the tail light (RH), and the side marker light (RH) should illuminate normally.
6. Check Rear Combination Light (LH) Connector F-17 For Damage - (Scheme 118) Are rear combination light (LH) connector F-17 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. The tail light (LH), side marker light (LH) and the license plate lights should illuminate normally.
7. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And Ground - Is the wiring harness between rear combination light (LH) connector F-17 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. The tail light (LH), side marker light (LH) and the license plate lights should illuminate normally.
8. Check Rear Combination Light (LH) Connector F-17 And Front-ECU Connector A-10X For Damage - Are rear combination light (LH) connector F-17 and front-ECU connector A-10X in good condition? YES: Go to Step 9. NO: Repair or replace the connector. The tail light (LH), side marker light (LH) and the license plate lights should illuminate normally.
9. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And Front-ECU Connector A-10X - Also check joint connector C-77 and intermediate connectors C-89 or C-90. (Scheme 118) If joint connector C-77 or intermediate connectors C-89 and C-90 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (LH) connector F-17 and front-ECU connector A-10X in good condition? YES: No action to be taken. NO: Repair the wiring harness. The tail light (LH), side marker light (LH) and the license plate lights should illuminate normally.
10. Check Rear Combination Light (RH) Connector F-09 And Front-ECU Connector A-10X For Damage - (Scheme 118) Are rear combination light (RH) connector F-09 and front-ECU connector A-10X in good condition? YES: Go to Step 11. NO: Repair or replace the connector. The tail light (RH) and the side marker light (RH) should illuminate normally.
11. Check The Wiring Harness Between Rear Combination Light (RH) Connector F-09 And Front-ECU Connector A-10X - Also check junction block connectors C-101 and C-112 and intermediate connector C-89. If junction block connectors C-101 or C-112 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (RH) connector F-09 and front-ECU connector A-10X in good condition? YES: No action to be taken. NO: Repair the wiring harness. The tail light (RH) and the side marker light (RH) should illuminate normally.
12. Check The Position Light Bulb (LH) - Remove the position light bulb (LH). Check that the position light bulb (LH) is not broken. Is the position light bulb (LH) in good condition? YES: Go to Step 13. NO: Replace the position light bulb (LH). Check that the position light (LH) illuminates normally.
13. Measure At Front Combination Light (LH) Connector A-26 In Order To Check The Ground Circuit To The Position Light (LH) - Disconnect front combination light (LH) connector A-26, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 119) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 16. NO: Go to Step 14.
14. Check Front Combination Light (LH) Connector A-26 For Damage - Is front combination light (LH) connector A-26 in good condition? YES: Go to Step 15. NO: Repair or replace the connector. Check that the position light (LH) illuminates normally.
15. Check The Wiring Harness Between Front Combination Light (LH) Connector A-26 And Ground - Is the wiring harness between front combination light (LH) connector A-26 and ground in good condition? YES: Replace the position light socket (LH). Check that the position light (LH) illuminates normally. NO: Repair the wiring harness. Check that the position light (LH) illuminates normally.
16. Check Front Combination Light (LH) Connector A-26 And Front-ECU Connector A-10X For Damage - Are front combination light (LH) connector A-26 and front-ECU connector A-10X in good condition? YES: Go to Step 17. NO: Repair or replace the connector. The tail light (LH, incorporated in rear combination light) and the side marker light (LH) should illuminate normally. Check that the position light (LH) illuminates normally.
17. Check The Wiring Harness Between Front Combination Light (LH) Connector A-26 And Front-ECU Connector A-10X - Also check joint connector C-77 and intermediate connector C-89. (Scheme 118) If joint connector C-77 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between front combination light (LH) connector A-26 and front-ECU connector A-10X in good condition? YES: Replace the position light socket (LH). Check that the position light (LH) illuminates normally. NO: Repair the wiring harness. Check that the position light (LH) illuminates normally.
18. Check The Position Light Bulb (RH) - Remove the position light bulb (RH). Check that the position light bulb (RH) is not broken. Is the position light bulb (RH) in good condition? YES: Go to Step 19. NO: Replace the position light bulb (RH). Check that the position light (RH) illuminates normally.
19. Measure At Position Light (RH) Connector A-32 In Order To Check The Ground Circuit To The Position Light (RH) - Disconnect position light (RH) connector A-32, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 120) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 22. NO: Go to Step 20.
20. Check Position Light (RH) Connector A-32 For Damage - Is position light (RH) connector A-32 in good condition? YES: Go to Step 21. NO: Repair or replace the connector. Check that the position light (RH) illuminates normally.
21. Check The Wiring Harness Between Position Light (RH) Connector A-32 And Ground - Is the wiring harness between position light (RH) connector A-32 and ground in good condition? YES: Replace the front combination light socket (RH). Check that the position light (RH) illuminates normally. NO: Repair the wiring harness. Check that the position light (RH) illuminates normally.
22. Check Position Light (RH) Connector A-32 And Front-ECU Connector A-10X For Damage - Are position light (RH) connector A-32 and front-ECU connector A-10X in good condition? YES: Go to Step 23. NO: Repair or replace the connector. Check that the position light (LH) illuminates normally.
23. Check The Wiring Harness Between Position Light (RH) Connector A-32 And Front-ECU Connector A-10X - Also check intermediate connectors C-06 and C-89. If intermediate connector C-06 or C-89 is damaged, repair or replace the connector. Is the wiring harness between position light (RH) connector A-32 and front-ECU connector A-10X in good condition? YES: Replace the front combination light socket (RH). Check that the position light (LH) illuminates normally. NO: Repair the wiring harness. Check that the position light (LH) illuminates normally.
24. Check The Stop/Tail Light Bulb (LH) - Remove the stop/tail light bulb (LH). Check that the stop/tail light bulb (LH) is not broken. Is the stop/tail light bulb (LH) in good condition? YES: Go to Step 25. NO: Replace the stop/tail light bulb (LH). Check that the tail light (LH) illuminates normally.
25. Measure At Rear Combination Light (LH) Connector F-17 In Order To Check The Ground Circuit To The Rear Combination Light (LH) - Disconnect rear combination light (LH) connector F-17, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 121) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 28. NO: Go to Step 26.
26. Check Rear Combination Light (LH) Connector F-17 For Damage - Is rear combination light (LH) connector F-17 in good condition? YES: Go to Step 27. NO: Repair or replace the connector. Check that the tail light (LH) illuminates normally.
27. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And Ground - Is the wiring harness between rear combination light (LH) connector F-17 and ground in good condition? YES: Replace the rear combination light socket assembly (LH). Check that the tail lights (incorporated in rear combination lights) illuminate normally. NO: Repair the wiring harness. Check that the tail light (LH) illuminates normally.
28. Check Rear Combination Light (LH) Connector F-17 And Front-ECU Connector A-10X For Damage - Are rear combination light (LH) connector F-17 and front-ECU connector A-10X in good condition? YES: Go to Step 29. NO: Repair or replace the connector. Check that the tail light (LH) illuminates normally.
29. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And Front-ECU Connector A-10X - Also check joint connector C-77 and intermediate connectors C-89 and C-90. If joint connector C-77 or intermediate connectors C-89 or C-90 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (LH) connector F-17 and front-ECU connector A-10X in good condition? YES: Replace the rear combination light socket assembly (LH). Check that the tail light (LH) illuminates normally. NO: Repair the wiring harness. Check that the tail light (LH) illuminates normally.
30. Check The Stop/Tail Light Bulb (RH) - Remove the stop/tail light bulb (RH). Check that the stop/tail light bulb (RH) is not broken. Is the stop/tail light bulb (RH) in good condition? YES: Go to Step 31. NO: Replace the stop/tail light bulb (RH). Check that the tail light (RH) illuminates normally.
31. Measure At Rear Combination Light (RH) Connector F-09 In Order To Check The Ground Circuit To The Rear Combination Light (RH) - Disconnect rear combination light (RH) connector F-09, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 122) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 34. NO: Go to Step 32.
32. Check Rear Combination Light (RH) Connector F- 09 For Damage - Is rear combination light (RH) connector F-09 in good condition? YES: Go to Step 33. NO: Repair or replace the connector. Check that the tail light (RH) illuminates normally.
33. Check The Wiring Harness Between Rear Combination Light (RH) Connector F-09 And Ground - Is the wiring harness between rear combination light (RH) connector F-09 and ground in good condition? YES: Replace the rear combination light socket assembly (RH). Check that the tail light (RH) illuminates normally. NO: Repair the wiring harness. Check that the tail light (RH) illuminates normally.
34. Check Rear Combination Light (RH) Connector F- 09 And Front-ECU Connector A-10X For Damage - Are rear combination light (RH) connector F-09 and front-ECU connector A-10X in good condition? YES: Go to Step 35. NO: Repair or replace the connector. Check that the tail light (RH) illuminates normally.
35. Check The Wiring Harness Between Rear Combination Light (RH) Connector F-09 And Front-ECU Connector A-10X - Also check intermediate connector C-89, junction block connectors C-101 and C-112. If intermediate connector C-89, junction block connector C-101 or C-112 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (RH) connector F-09 and front-ECU connector A-10X in good condition? YES: Replace the rear combination light socket assembly (RH). Check that the tail light (RH) illuminates normally. NO: Repair the wiring harness. Check that the tail light (RH) illuminates normally.
36. Check The Rear Side Marker Light Bulb (LH) - Remove the rear side marker light bulb (LH). Check that the rear side marker light bulb (LH) is not broken. Is the rear side marker light bulb (LH) in good condition? YES: Go to Step 37. NO: Replace the rear side marker light bulb (LH). Check that the rear side marker light (LH) illuminate normally.
37. Measure At Rear Side Marker Light (LH) Connector F-20 In Order To Check The Ground Circuit To The License Plate Lights - Disconnect rear side marker light (LH) connector F-20, and measure at the wiring harness side. Measure the resistance value between terminal 1 and ground. (Scheme 123) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 40. NO: Go to Step 38.
38. Check Rear Side Marker Light (LH) Connector F-20 For Damage - Is rear side marker light (LH) connector F-20 in good condition? YES: Go to Step 39. NO: Repair or replace the connector. Check that the rear side marker light (LH) illuminate normally.
39. Check The Wiring Harness Between Rear Side Marker Light (LH) Connector F-20 And Ground - Is the wiring harness between rear side marker light (LH) connector F-20 and ground in good condition? YES: Replace the rear side marker light socket (LH). Check that the rear side marker light (LH) illuminate normally. NO: Repair the wiring harness. Check that the rear side marker light (LH) illuminate normally.
40. Check Rear Side Marker Light (LH) Connector F-20 And Front-ECU Connector A-10X For Damage - Are rear side marker light (LH) connector F-20 and front- ECU connector A-10X in good condition? YES: Go to Step 41. NO: Repair or replace the connector. Check that the rear side marker light (LH) illuminate normally.
41. Check The Wiring Harness Between Rear Side Marker Light (LH) Connector F-20 And Front-ECU Connector A-10X - Also check intermediate connectors C-89 and C-90 and joint connector C-77. If intermediate connectors C-89 or C-90 or joint connector C-77 is damaged, repair or replace the connector. Is the wiring harness between rear side marker light (LH) connector F-20 and front-ECU connector A-10X in good condition? YES: Replace the rear side marker light socket (LH). Check that the rear side marker light (LH) illuminate normally. NO: Repair the wiring harness. Check that the rear side marker light (LH) illuminate normally.
42. Check The Rear Side Marker Light Bulb (RH) - Remove the rear side marker light bulb (RH). Check that the rear side marker light bulb (RH) is not broken. Is the rear side marker light bulb (RH) in good condition? YES: Go to Step 43. NO: Replace the rear side marker light bulb (RH). Check that the rear side marker light (RH) illuminate normally.
43. Measure At Rear Side Marker Light (RH) Connector F-11 In Order To Check The Ground Circuit To The License Plate Lights - Disconnect rear side marker light (RH) connector F-11, and measure at the wiring harness side. Measure the resistance value between terminal 1 and ground. (Scheme 124) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 46. NO: Go to Step 44.
44. Check Rear Side Marker Light (RH) Connector F-11 For Damage - Is rear side marker light (RH) connector F-11 in good condition? YES: Go to Step 45. NO: Repair or replace the connector. Check that the rear side marker light (RH) illuminate normally.
45. Check The Wiring Harness Between Rear Side Marker Light (RH) Connector F-11 And Ground - Is the wiring harness between rear side marker light (RH) connector F-11 and ground in good condition? YES: Replace the rear side marker light socket (RH). Check that the rear side marker light (RH) illuminate normally. NO: Repair the wiring harness. Check that the rear side marker light (RH) illuminate normally.
46. Check Rear Side Marker Light (RH) Connector F-11 And Front-ECU Connector A-10X For Damage - Are rear side marker light (RH) connector F-11 and front-ECU connector A-10X in good condition? YES: Go to Step 47. NO: Repair or replace the connector. Check that the rear side marker light (RH) illuminate normally.
47. Check The Wiring Harness Between Rear Side Marker Light (RH) Connector F-11 And Front-ECU Connector A-10X - Also check intermediate connector C-89, junction block connectors C-101 and C-112. If intermediate connector C-89, junction block connector C-101 or C-112 is damaged, repair or replace the connector. Is the wiring harness between rear side marker light (RH) connector F-11 and front-ECU connector A-10X in good condition? YES: Replace the rear side marker light socket (RH). Check that the rear side marker light (RH) illuminate normally. NO: Repair the wiring harness. Check that the rear side marker light (RH) illuminate normally.
48. Check The License Plate Light Bulb - Remove the license plate light bulb. Check that the license plate light bulb is not broken. Is the license plate light bulb in good condition? YES: Go to Step 49. NO: Replace the license plate light bulb. Check that the license plate light illuminate normally.
49. Measure At License Plate Light Connector F-15 In Order To Check The Ground Circuit To The License Plate Lights - Disconnect license plate light connector F-15, and measure at the wiring harness side. Measure the resistance value between terminal 1 and ground. (Scheme 125) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 52. NO: Go to Step 50.
50. Check License Plate Light Connector F-15 For Damage - Is license plate light connector F-15 in good condition? YES: Go to Step 51. NO: Repair or replace the connector. Check that the license plate light illuminate normally.
51. Check The Wiring Harness Between License Plate Light Connector F-15 And Ground - Also check intermediate connector F-14. If intermediate connector F-14 is damaged, repair or replace the connector. Is the wiring harness between license plate light connector F-15 and ground in good condition? YES: Replace the license plate light socket. Check that the license plate light illuminate normally. NO: Repair the wiring harness. Check that the license plate light illuminate normally.
52. Check License Plate Light Connector F-15 And Front-ECU Connector A-10X For Damage - Are license plate light connector F-15 and front-ECU connector A-10X in good condition? YES: Go to Step 53. NO: Repair or replace the connector. Check that the license plate light illuminate normally.
53. Check The Wiring Harness Between License Plate Light Connector F-15 And Front-ECU Connector A-10X - Also check intermediate connectors C-89 and C-90 and F-14 and joint connector C-77. If intermediate connectors C-89 or C-90 or F-14 or joint connector C-77 is damaged, repair or replace the connector. Is the wiring harness between license plate light connector F-15 and front-ECU connector A-10X in good condition? YES: Replace the license plate light socket. Check that the license plate light illuminate normally. NO: Repair the wiring harness. Check that the license plate light illuminate normally.

1. Malfunction of headlight bulb
2. Damaged harness wires or connectors

Note. For connector locations (Scheme 126)

Scheme 126

1. Check The Headlight Operation - Which of the headlights does not illuminate? LH (low and high beam) : Go to Step 2 . RH (low and high beam) : Go to Step 5 . LH (only low-beam) : Go to Step 8 . RH (only low-beam) : Go to Step 11 . LH (only high beam) : Go to Step 14 . RH (only high beam) : Go to Step 17 . Low beam only (both RH and LH) : Refer to «INSPECTION PROCEDURE J-2: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (LOW-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S33251963372004120200000) . High beam (both RH and LH) : Refer to «INSPECTION PROCEDURE J-3: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (HIGH-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S41283862272004120200000) . Only high-beam indicator light : Refer to «INSPECTION PROCEDURE J-8: THE HIGH-BEAM INDICATOR LIGHT DOES NOT ILLUMINATE»(ref-168713-S08997509702004120600000) .
2. Check Headlight (LH) Bulb - Remove the headlight (LH) bulb. Check that the headlight (LH) bulb is not broken. Is headlight (LH) bulb normal? YES : Go to Step 3. NO : Replace the headlight bulb (LH). Check that the headlights illuminate normally.
3. Check Headlight (LH) Connector A-24 For Damage - Is headlight (LH) connector A-24 in good condition? YES : Go to Step 4. NO : Repair or replace the connector. Check that the headlights illuminate normally.
4. Check The Wiring Harness Between Headlight (LH) Connector A-24 And Ground - Is the wiring harness between headlight (LH) connector A-24 and ground in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.
5. Check Headlight (RH) Bulb - Remove the headlight (RH) bulb. Check that the headlight (RH) bulb is not broken. Is headlight (RH) bulb normal? YES : Go to Step 6. NO : Replace the headlight bulb (RH). Check that the headlights illuminate normally.
6. Check Headlight (RH) Connector A-35 For Damage - Is headlight (RH) connector A-35 in good condition? YES : Go to Step 7. NO : Repair or replace the connector. Check that the headlights illuminate normally.
7. Check The Wiring Harness Between Headlight (RH) Connector A-35 And Ground - Is the wiring harness between headlight (RH) connector A-35 and ground in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.
8. Check Headlight (LH) Bulb - Remove the headlight (LH) bulb. Check that the headlight (LH) bulb is not broken. Is headlight (LH) bulb normal? YES : Go to Step 9. NO : Replace the headlight bulb (LH). Check that the headlights illuminate normally.
9. Check Headlight (LH) Connector A-24 And Front-ECU Connector A-10X For Damage - Are headlight (LH) connector A-24 and front-ECU connector A-10X in good condition? YES : Go to Step 10. NO : Repair or replace the connector. Check that the headlights illuminate normally.
10. Check The Wiring Harness Between Headlight (LH) Connector A-24 And Front-ECU Connector A-10X - Is the wiring harness between headlight (LH) connector A-24 and front-ECU connector A-10X in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.
11. Check Headlight (RH) Bulb - Remove the headlight (RH) bulb. Check that the headlight (RH) bulb is not broken. Is headlight (RH) bulb normal? YES : Go to Step 12. NO : Replace the headlight bulb (RH). Check that the headlights illuminate normally.
12. Check Headlight (RH) Connector A-35 And Front-ECU Connector A-10X For Damage - Are headlight (RH) connector A-35 and front-ECU connector A-10X in good condition? YES : Go to Step 13. NO : Repair or replace the connector. Check that the headlights illuminate normally.
13. Check The Wiring Harness Between Headlight (RH) Connector A-35 And Front-ECU Connector A-10X - Also check intermediate connector C-06. If intermediate connector C-06 is damaged, repair or replace the connector. Is the wiring harness between headlight (RH) connector A-35 and front-ECU connector A-10X in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.
14. Check Headlight (LH) Bulb - Remove the headlight (LH) bulb. Check that the headlight (LH) bulb is not broken. Is headlight (LH) bulb normal? YES : Go to Step 15. NO : Replace the headlight bulb (LH). Check that the headlights illuminate normally.
15. Check Headlight (LH) Connector A-24 And Front-ECU Connector A-10X For Damage - Are headlight (LH) connector A-24 and front-ECU connector A-10X in good condition? YES : Go to Step 16. NO : Repair or replace the connector. Check that the headlights illuminate normally.
16. Check The Wiring Harness Between Headlight (LH) Connector A-24 And Front-ECU Connector A-10X - Is the wiring harness between headlight (LH) connector A-24 and front-ECU connector A-10X in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.
17. Check Headlight (RH) Bulb - Remove the headlight (RH) bulb. Check that the headlight (RH) bulb is not broken. Is headlight (RH) bulb normal? YES : Go to Step 18. NO : Replace the headlight bulb (RH). Check that the headlights illuminate normally.
18. Check Headlight (RH) Connector A-35 And Front-ECU Connector A-10X For Damage - Are headlight (RH) connector A-35 and front-ECU connector A-10X in good condition? YES : Go to Step 19. NO : Repair or replace the connector. Check that the headlights illuminate normally.
19. Check The Wiring Harness Between Headlight (RH) Connector A-35 And Front-ECU Connector A-10X - Also check intermediate connector C-06. If intermediate connector C-06 is damaged, repair or replace the connector. Is the wiring harness between headlight (RH) connector A-35 and front-ECU connector A-10X in good condition? YES : No action to be taken. NO : Repair the wiring harness. Check that the headlights illuminate normally.

1. Malfunction of the high-beam indicator light bulb
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 127)

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

1. Check The Headlight Operation - Do the headlights illuminate? YES: Go to Step 2. NO: Repair the headlights first (Refer «INSPECTION PROCEDURE J-3: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (HIGH-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S41283862272004120200000) ).
2. Check At ETACS-ECU Connector C-118 In Order To Check The High-Beam Indicator Light Circuit - Disconnect ETACS-ECU connector C-118, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Connect terminal No. 72 to ground. (Scheme 128) Does the high-beam indicator light illuminate? YES: Replace the ETACS-ECU. Check that the high-beam indicator light illuminates normally. NO: Go to Step 3.
3. Check High-Beam Indicator Light Bulb - (Scheme 129) Is the high-beam indicator light bulb in good condition? YES: Go to Step 4. NO: Replace the high-beam indicator light bulb. Check that the high-beam indicator light illuminates normally.
4. Check The Combination Meter (Printed-Circuit Board) - Remove the combination meter. See appropriate INSTRUMENT PANELS article. Remove the high-beam indicator light bulb. Then measure the resistance value between the bulb terminals. Install the bulb to the combination meter, and then measure the resistance value between connector C-42 terminals 21 and 22. (Scheme 130) The measured resistance value should be roughly the same as the value measured in Step (2). Are these two resistance values extremely different? YES: Repair or replace the combination meter (printed circuit board). Check that the headlight-beam indicator light illuminates normally. NO (roughly the same): Go to Step 5.
5. Check Combination Meter Connector C-42 In Order To Check The Ignition Switch (IG1) Line Of The Power Supply To The High-Beam Indicator Light - Disconnect combination meter connector C-42, and measure at the wiring harness side. Measure the voltage between terminal 21 and ground. (Scheme 131) The measured value should be 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 8. NO: Go to Step 6.
6. Check Combination Meter Connector C-42 For Damage - Is combination meter connector C-42 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that the high-beam indicator light illuminates normally.
7. Check The Wiring Harness Between Combination Meter Connector C-42 And The Ignition Switch (IG1) - Also check junction block connectors C-108, C-113 and intermediate connector C-89. If junction block connectors C- 108, C-113 or intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-42 and the ignition switch (IG1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the high-beam indicator light illuminates normally.
8. Check Combination Meter Connector C-42 And ETACS-ECU Connector C-118 For Damage - Are combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. Check that the high-beam indicator light illuminates normally.
9. Check The Wiring Harness Between Combination Meter Connector C-42 And ETACS-ECU Connector C-118 - Is the wiring harness between combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the high-beam indicator light illuminates normally.

1. Malfunction of the driver's door switch
2. Malfunction of the column switch (turn-signal light and lighting switch)
3. Malfunction of the ETACS-ECU
4. Malfunction of the front-ECU
5. Damaged harness wires or connectors

Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches

1. Ignition switch: "ON" to "OFF"
2. Lighting switch: "TAIL" or "HEAD" CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.

Scheme 132

Scheme 133

1. Connect scan tool MB991502 to the data link connector. (Scheme 7)
2. Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3
3. Select "LIGHTING - HD AUTO-CUT" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 132)
4. When the driver's door is opened, check that normal conditions are displayed on the items described in the illustration. (Scheme 133)

Does the scan tool display the items "TAIL LIGHT SW", "IG SW IG1", "DR DOOR SW" and "H/L AUTO-CUT" as normal condition?

1. YES : Replace the front-ECU. Check that the headlight automatic shutdown function works normally.
2. NO : The scan tool does not show the respective normal condition for item "TAILLIGHT SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000) .
3. NO : The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000) .
4. NO : The scan tool does not show the respective normal condition for item "DR DOOR SW." Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000) .
5. NO : The scan tool does not show the respective normal condition for item "H/L AUTO-CUT." Replace the front-ECU. Check that the headlight automatic shutdown function works normally.

Malfunction of the front-ECU

Replace the front-ECU. Check that the headlight dimmer switch automatic resetting function works normally.

1. Malfunction of column switch (turn-signal light and lighting switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 134)

Scheme 134

Scheme 135

Scheme 136

1. Check The Hazard Warning Light - Do the hazard warning lights work normally? YES: Go to Step 7. NO: Go to Step 2.
2. Check The Turn-Signal Lights - Does either of the turn-signal lights illuminate? YES (illuminates at only one side): Go to Step 3. NO (do not illuminate at all): Go to Step 4.
3. Check ETACS-ECU Connector C-119, Junction Block Connectors C-101, C-108 And C-112 For Damage - Are ETACS-ECU connector C-119, junction block connectors C-101, C-108 and C-112 in good condition? YES: Replace the ETACS-ECU. Check that the turn-signal lights illuminate normally. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
4. Check At ETACS-ECU Connector C-119 In Order To Check The Power Supply Circuit To The ETACS-ECU (Battery Power Supply) - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the voltage between terminal 11 and ground. (Scheme 135) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the ETACS-ECU. Check that the turn-signal lights illuminate normally. NO: Go to Step 5.
5. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
6. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Battery - Also check junction block connector C-112 and intermediate connector C-89. If junction block connector C-112 or intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
7. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON Turn-signal light switch: RH CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "TURN SIGNAL - TURN SIG.RH" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 136) Does the scan tool display the items "T/S RH SW" and "IG SW (IG1)" as normal condition? YES: Replace the ETACS-ECU. Check that the turn-signal lights illuminate normally. NO: The scan tool does not show the respective normal condition for item "T/S RH SW." Refer to «INSPECTION PROCEDURE O-7: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE TAILLIGHT SWITCH, THE HEADLIGHT SWITCH, THE PASSING LIGHT SWITCH, THE DIMMER SWITCH, THE TURN-SIGNAL LIGHT SWITCH OR SWITCH»(ref-168713-S23740267452004111800000). NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000).

1. Malfunction of the hazard warning light switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

1. Check The Turn-Signal Lights - Do the turn-signal lights illuminate normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN SIGNAL LIGHT SWITCH IS TURNED ON»(ref-168713-S22602101512004120700000).
2. Check The Input Signal (By Using The Pulse Check) - Check input signal from the hazard warning light switch. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Check that scan tool MB991502 sounds when the hazard warning light switch is turned from "OFF" to "ON. Does scan tool MB991502 sound when the hazard warning light switch is turned from "OFF" to "ON"? YES: Replace the ETACS-ECU. Check that the hazard warning lights illuminate normally. NO: Refer to «INSPECTION PROCEDURE P-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE HAZARD WARNING LIGHT SWITCH»(ref-168713-S27050527022004112400000).

1. Malfunction of the turn-signal light bulb
2. Damaged harness wires or connectors

Note. For connector locations (Scheme 137)

Scheme 137

Scheme 138

Scheme 139

Scheme 140

Scheme 141

1. Check The Hazard Warning Light - Which turn-signal light does not illuminate? Front turn-signal light (LH): Go to Step 2. Front turn-signal light (RH): Go to Step 8. Rear combination light (LH): Go to Step 14. Rear combination light (RH): Go to Step 20. Combination meter (LH): Go to Step 26. Combination meter (RH): Go to Step 28. Combination meter (both right and left): Go to Step 30. LH side only: Refer to «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN SIGNAL LIGHT SWITCH IS TURNED ON»(ref-168713-S22602101512004120700000). RH side only: Refer to «INSPECTION PROCEDURE K-1: FLASHER TIMER: TURN-SIGNAL LIGHTS DOES NOT FLASH WHEN THE TURN SIGNAL LIGHT SWITCH IS TURNED ON»(ref-168713-S22602101512004120700000). Both LH and RH sides: Refer to «INSPECTION PROCEDURE K-2: FLASHER TIMER: HAZARD WARNING LIGHTS DO NOT ILLUMINATE»(ref-168713-S25870793262004112400000).
2. Check The Front Turn-Signal Light Bulb (LH) - Remove the front turn-signal (LH) light bulb. Check that the front turn-signal light bulb (LH) is not broken. Is the front turn-signal (LH) light bulb in good condition? YES: Go to Step 3. NO: Replace the front turn-signal (LH) light bulb. Check that the turn-signal lights illuminate normally.
3. Measure At Front Combination Light (LH) Connector A-26 In Order To Check The Ground Circuit To The Front Combination Light (LH) - Disconnect front combination light (LH) connector A-26, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 138) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 6. NO: Go to Step 4.
4. Check Front Combination Light (LH) Connector A-26 For Damage - Is front combination light (LH) connector A-26 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
5. Check The Wiring Harness Between Front Combination Light (LH) Connector A-26 And Ground - Is the wiring harness between front combination light (LH) connector A-26 and ground in good condition? YES: Replace the front combination light socket (LH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
6. Check Front Combination Light (LH) Connector A-26 And ETACS-ECU Connector C-119 For Damage - Are front combination light (LH) connector A-26 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
7. Check The Wiring Harness Between Front Combination Light (LH) Connector A-26 And ETACS-ECU Connector C-119 - Also check junction block connector C-112 and intermediate connector C-89. If junction block connector C-112 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between front combination light (LH) connector A-26 and ETACS-ECU connector C-119 in good condition? YES: Replace the front combination light socket (LH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
8. Check The Front Turn-Signal Light Bulb (RH) - Remove the front turn-signal (RH) light bulb. Check that the front turn-signal light bulb (RH) is not broken. Is the front turn-signal (RH) light bulb in good condition? YES: Go to Step 9. NO: Replace the front turn-signal (RH) light bulb. Check that the turn-signal lights illuminate normally.
9. Measure At Front Combination Light (RH) Connector A-32 In Order To Check The Ground Circuit To The Front Combination Light (RH) - Disconnect front combination light (RH) connector A-32, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 139) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 12. NO: Go to Step 10.
10. Check Front Combination Light (RH) Connector A- 32 For Damage - Is front combination light (RH) connector A-32 in good condition? YES: Go to Step 11. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
11. Check The Wiring Harness Between Front Combination Light (RH) Connector A-32 And Ground - Is the wiring harness between front combination light (RH) connector A-32 and ground in good condition? YES: Replace the front combination light socket (RH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
12. Check Front Combination Light (RH) Connector A-32 And ETACS-ECU Connector C-119 For Damage - Are front combination light (RH) connector A-32 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 13. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
13. Check The Wiring Harness Between Front Combination Light (RH) Connector A-32 And ETACS-ECU Connector C-119 - Also check junction block connector C-112 and intermediate connector C-94. If junction block connector C-112 or intermediate connector C-94 is damaged, repair or replace the connector. Is the wiring harness between front combination light (RH) connector A-32 and ETACS-ECU connector C-119 in good condition? YES: Replace the front combination light socket (RH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
14. Check The Rear Turn-Signal Light Bulb (LH) - Remove the rear turn-signal (LH) light bulb. Check that the rear turn-signal light bulb (LH) is not broken. Is the rear turn-signal (LH) light bulb in good condition? YES: Go to Step 15. NO: Replace the rear turn-signal (LH) light bulb. Check that the turn-signal lights illuminate normally.
15. Measure At Rear Combination Light (LH) Connector F-17 In Order To Check The Ground Circuit To The Rear Combination Light (LH) - Disconnect rear combination light (LH) connector F-17, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 140) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 18. NO: Go to Step 16.
16. Check Rear Combination Light (LH) Connector F-17 For Damage - Is rear combination light (LH) connector F-17 in good condition? YES: Go to Step 17. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
17. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And Ground - Is the wiring harness between rear combination light (LH) connector F-17 and ground in good condition? YES: Replace the rear combination light socket assembly (LH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
18. Check Rear Combination Light (LH) Connector F-17 And ETACS-ECU Connector C-119 For Damage - Are rear combination light (LH) connector F-17 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 19. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
19. Check The Wiring Harness Between Rear Combination Light (LH) Connector F-17 And ETACS-ECU Connector C-119 - Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (LH) connector F-17 and ETACS-ECU connector C-119 in good condition? YES: Replace the rear combination light socket assembly (LH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
20. Check The Rear Turn-Signal Light Bulb (RH) - Remove the rear turn-signal (RH) light bulb. Check that the rear turn-signal light bulb (RH) is not broken. Is the rear turn-signal (RH) light bulb in good condition? YES: Go to Step 21. NO: Replace the rear turn-signal (RH) light bulb. Check that the turn-signal lights illuminate normally.
21. Measure At Rear Combination Light (RH) Connector F-09 In Order To Check The Ground Circuit To The Rear Turn Signal Light (RH) - Disconnect rear combination light (RH) connector F-09, and measure at the wiring harness side. Measure the resistance value between terminal 5 and ground. (Scheme 141) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 24. NO: Go to Step 22.
22. Check Rear Combination Light (RH) Connector F-09 For Damage - Is rear combination light (RH) connector F-09 in good condition? YES: Go to Step 23. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
23. Check The Wiring Harness Between Rear Combination Light (RH) Connector F-09 And Ground - Is the wiring harness between rear combination light (RH) connector F-09 and ground in good condition? YES: Replace the rear combination light socket assembly (RH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
24. Check Rear Combination Light (RH) Connector F-09 And ETACS-ECU Connector C-119 For Damage - Are rear combination light (RH) connector F-09 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 25. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
25. Check The Wiring Harness Between Rear Combination Light (RH) Connector F-09 And ETACS-ECU Connector C-119 - Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between rear combination light (RH) connector F-09 and ETACS-ECU connector C-119 in good condition? YES: Replace the rear combination light socket assembly (RH). Check that the turn-signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
26. Check Combination Meter Connector C-41 And ETACS-ECU Connector C-119 For Damage - Are combination meter connector C-41 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 27. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
27. Check The Wiring Harness Between Combination Meter Connector C-41 And ETACS-ECU Connector C-119 - Also check junction block connector C-108. If junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-41 and ETACS-ECU connector C-119 in good condition? YES: Replace the combination meter. Check that the turn signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
28. Check Combination Meter Connector C-43 And ETACS-ECU Connector C-119 For Damage - Are combination meter connector C-43 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 29. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
29. Check The Wiring Harness Between Combination Meter Connector C-43 And ETACS-ECU Connector C-119 - Also check junction block connector C-108. If junction block connector C-108 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-43 and ETACS-ECU connector C-119 in good condition? YES: Replace the combination meter. Check that the turn signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.
30. Check Combination Meter Connector C-43 For Damage - Is combination meter connector C-43 in good condition? YES: Go to Step 31. NO: Repair or replace the connector. Check that the turn-signal lights illuminate normally.
31. Check The Wiring Harness Between Combination Meter Connector C-43 And Ground - Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-43 and ground in good condition? YES: Replace the combination meter. Check that the turn signal lights illuminate normally. NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

1. Malfunction of the fog light relay
2. Malfunction of the fog light switch
3. Malfunction of the front-ECU
4. Malfunction of the ETACS-ECU
5. Damaged harness wires or connectors

Note. For connector locations (Scheme 142)

Scheme 142

Scheme 143

Scheme 144

Scheme 145

1. Check The Headlight (Low Beam) Operation - Do the headlights illuminate at low beam normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE J-2: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (LOW-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S33251963372004120200000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Set each switch to the following condition before checking input signal from the fog light switch: Ignition switch: ON Fog light switch: ON NOTE: Turn the ignition switch to the "ON" position in order to disable the headlight automatic shutdown function. CAUTION: CAUTION To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "LIGHTING - F.FOG" (FUNCTION DIAG.), and check that normal conditions are displayed on the items described in the illustration. (Scheme 143) Does the scan tool display the items "IG SW (IG1)" and "F.FOG LIGHT" as normal condition? YES: Go to Step 3. NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: The scan tool does not show the respective normal condition for item "F.FOG LIGHT" Refer to «INSPECTION PROCEDURE O-3: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE FOG LIGHT SWITCH»(ref-168713-S05092728372004120700000).
3. Check The Fog Light Relay - (Scheme 144) Is the fog light relay in good condition? YES: Go to Step 4. NO: Replace the fog light relay. Check that the fog lights illuminate normally.
4. Measure At Fog Light Relay Connector A-04X In Order To The Battery Power Supply To The Fog Light Relay - Disconnect fog light relay connector A-04X, and measure at the relay box side. Measure the voltage between terminal 1,2 and ground. (Scheme 145) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check Fog Light Relay Connector A-04X For Damage - Are fog light relay connector A-04X in good condition? YES: Go to Step 6. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
6. Check The Wiring Harness Between Fog Light Relay Connector A-04X And The Battery - Is the wiring harness between fog light relay connector A-04X and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
7. Check Fog Light Relay Connector A-04X And Front-ECU Connector A-10X For Damage - Are fog light relay connector A-04X and front-ECU connector A-10X in good condition? YES: Go to Step 8. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
8. Check The Wiring Harness Between Fog Light Relay Connector A-04X And Front-ECU Connector A-10X - Is the wiring harness between fog light relay connector A-04X and front-ECU connector A-10X in good condition? YES: Go to Step 9. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
9. Check Fog Light Relay Connector A-04X, Fog Light Connectors A-28, A-31 And Combination Meter Connector C-43 For Damage - Are fog light relay connector A-04X, fog light connectors A-28, A-31 and combination meter connector C-43 in good condition? YES: Go to Step 10. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
10. Check The Wiring Harnesses Among Fog Light Relay Connector A-04X, Fog Light Connectors A-28, A-31 And Combination Meter Connector C-43 - Also check intermediate connectors C-06 and C-89. If intermediate connectors C-06 or C-89 is damaged, repair or replace the connector. Are the wiring harnesses among fog light relay connector A-04X, fog light connectors A-28, A-31 and combination meter connector C-43 in good condition? YES: Go to Step 11. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
11. Replacement Of ECU - Replace the front-ECU. The fog lights should illuminate normally. Do the fog lights illuminate normally? YES: There is no action to be taken. NO: Replace the ETACS-ECU. The fog light should illuminate normally.

Malfunction of the front-ECU

Replace the front-ECU. The fog lights should go out when the headlights (low-beam) are turned off while the fog lights are on.

1. Malfunction of the fog light bulb
2. Malfunction of the combination meter
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 146)

Scheme 146

Scheme 147

Scheme 148

Scheme 149

1. Check That The Fog Lights And The Fog Light Indicator Light Illuminate - Do the fog lights and the fog light indicator light illuminate normally? Only the fog light (LH) does not illuminate: Go to Step 2. Only the fog light (RH) does not illuminate: Go to Step 8. Only the fog light indicator light does not illuminate: Go to Step 14. Both of the fog lights do not illuminate: Refer to «INSPECTION PROCEDURE L-1: FOG LIGHT: FOG LIGHTS DO NOT ILLUMINATE WHEN THE FOG LIGHT SWITCH IS TURNED ON»(ref-168713-S00996197092004120700000).
2. Check The Fog Light Bulb (LH) - Remove the fog light bulb (LH). Check that the fog light bulb (LH) is not broken. Is the fog light bulb (LH) in good condition? YES: Go to Step 3. NO: Replace the fog light bulb (LH). Check that the fog lights illuminate normally.
3. Measure At Fog Light (LH) Connector A-28 In Order To Check The Ground Circuit To The Fog Light (LH) - Disconnect fog light (LH) connector A-28, and measure at the wiring harness side. Measure the resistance value between terminal 1 and ground. (Scheme 147) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 6. NO: Go to Step 4.
4. Check Fog Light (LH) Connector A-28 For Damage - Is fog light (LH) connector A-28 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
5. Check The Wiring Harness Between Fog Light (LH) Connector A-28 And Ground - Is the wiring harness between fog light (LH) connector A-28 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
6. Check Fog Light Relay Connector A-04X And Fog Light (LH) Connector A-28 For Damage - Are fog light relay connector A-04X and fog light (LH) connector A-28 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
7. Check The Wiring Harness Between Fog Light Relay Connector A-04X And Fog Light (LH) Connector A-28 - Is the wiring harness between fog light relay connector A-04X and fog light (LH) connector A-28 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
8. Check The Fog Light Bulb (RH) - Remove the fog light bulb (RH). Check that the fog light bulb (RH) is not broken. Is the fog light bulb (RH) in good condition? YES: Go to Step 9. NO: Replace the fog light bulb (RH). Check that the fog lights illuminate normally.
9. Measure At Fog Light (RH) Connector A-31 In Order To Check The Ground Circuit To The Fog Light (RH) - Disconnect fog light (RH) connector A-31, and measure at the wiring harness side. Measure the resistance value between terminal 1 and ground. (Scheme 148) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 12. NO: Go to Step 10.
10. Check Fog Light (RH) Connector A-31 For Damage - Is fog light (RH) connector A-31 in good condition? YES: Go to Step 11. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
11. Check The Wiring Harness Between Fog Light (RH) Connector A-31 And Ground - Is the wiring harness between fog light (RH) connector A-31 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
12. Check Fog Light Relay Connector A-04X And Fog Light (RH) Connector A-31 For Damage - Are fog light relay connector A-04X and fog light (RH) connector A-31 in good condition? YES: Go to Step 13. NO: Repair or replace the connector. Check that the fog lights illuminate normally.
13. Check The Wiring Harness Between Fog Light Relay Connector A-04X And Fog Light (RH) Connector A-31 - Also check intermediate connector C-06. If intermediate connectors C-06 is damaged, repair or replace the connector. Is the wiring harness between fog light relay connector A-04X and fog light (RH) connector A-31 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog lights illuminate normally.
14. Check The Fog Light Indicator Light Bulb - Remove the fog light indicator light bulb. Check that the fog light indicator light bulb is not broken. Is the fog light indicator light bulb in good condition? YES: Go to Step 15. NO: Replace the fog light indicator light bulb. Check that the fog light indicator light illuminates normally.
15. Measure At Combination Meter Connector C-43 In Order To Check The Ground Circuit To The Fog Light Indicator Light - Disconnect fog light indicator light connector C-43, and measure at the wiring harness side. Measure the resistance value between terminal 12 and ground. (Scheme 149) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 18. NO: Go to Step 16.
16. Check Combination Meter Connector C-43 For Damage - Is combination meter connector C-43 in good condition? YES: Go to Step 17. NO: Repair or replace the connector. Check that the fog light indicator light illuminates normally.
17. Check The Wiring Harness Between Combination Meter Connector C-43 And Ground - Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between combination meter connector C-43 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the fog light indicator light illuminates normally.
18. Check Fog Light Relay Connector A-04X And Combination Meter Connector C-43 For Damage - Are fog light relay connector A-04X and combination meter connector C-43 in good condition? YES: Go to Step 19. NO: Repair or replace the connector. Check that the fog light indicator light illuminates normally.
19. Check The Wiring Harness Between Fog Light Relay Connector A-04X And Combination Meter Connector C-43 - Also check intermediate connector C-89. If intermediate connectors C-89 is damaged, repair or replace the connector. Is the wiring harness between fog light relay connector A-04X and combination meter connector C-43 in good condition? YES: Replace the combination meter. Check that the fog light indicator light illuminates normally. NO: Repair the wiring harness. Check that the fog light indicator light illuminates normally.

1. Malfunction of the key reminder switch
2. Malfunction of the door switch
3. Malfunction of the driver's door lock actuator switch
4. Malfunction of the dome light
5. Malfunction of the liftgate latch switch or liftgate light switch
6. Malfunction of trunk lid latch switch or trunk light switch
7. Malfunction of the ETACS-ECU
8. Damaged harness wires or connectors

Scheme 150

Scheme 151

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: ON or START Driver's and front passenger's door: open Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 150) Does the scan tool display the items "IG SW (IG1)", "DR DOOR SW" and "PASS DOOR SW" as normal condition? YES: Go to Step 3. NO: The scan tool does not show the respective normal condition for item "IG SW (IG1)." Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: The scan tool does not show the respective normal condition for item "DR DOOR SW" and "PASS DOOR SW." Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).
3. Check The Input Signal (By Using The Pulse Check) - Check the following switches and input signals: Key reminder switch Liftgate latch switch or liftgate light switch Trunk lid latch switch or trunk light switch Interior light loaded signal If the switches (Scheme 151), which are applicable for the input signal check, are operated, check if scan tool MB991502 sounds or not. When the key reminder switch, liftgate latch switch or liftgate light switch, and trunk lid latch switch or trunk light switch and the interior light loaded signal is operated, does scan tool MB991502 sound? YES: Replace the ETACS-ECU. Check that the dome light illuminates normally. NO: Scan tool MB991502 does not sound when the ignition key is removed and reinserted: Refer to «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000). NO: When the liftgate or trunk lid is opened and closed, scan tool MB991502 does not sound: Refer to «INSPECTION PROCEDURE P-9: LIFTGATE LATCH SWITCH OR THE TRUNK LID LATCH SWITCH SIGNAL IS NOT SENT TO THE ETACS-ECU»(ref-168713-S25335768062004111500000). NO: When one of the interior lights is illuminated, scan tool MB991502 does not sound: Refer to «INSPECTION PROCEDURE P-14: ETACS-ECU DOES NOT RECEIVE A INTERIOR LIGHT LOADED SIGNAL»(ref-168713-S11638785352004120800000).

1. Malfunction of the key reminder switch
2. Malfunction of the door switch
3. Malfunction of the driver's door lock actuator switch
4. Malfunction of the dome light
5. Malfunction of the ETACS-ECU
6. Damaged harness wires or connectors

Note. For connector locations (Scheme 152)

Scheme 152

Scheme 153

Scheme 154

1. Check Which Of The Dome Light, The Luggage Compartment Light Or The Trunk Light Does Not Illuminate Normally - Which of the dome light, the luggage compartment light or the trunk light fail to illuminate normally? Dome light does not illuminate normally: Go to Step 2. Luggage compartment light: Go to Step 8. Trunk light: Go to Step 15.
2. Check The Dome Light Bulb - Is the dome light bulb in good condition? YES: Go to Step 3. NO: Replace the bulb. Check that the dome light illuminates normally.
3. Measure At Dome Light Connector D-04 (Eclipse Without Sunroof) Or D-03 (Eclipse Spyder & Eclipse With Sunroof And Without Vanity Mirror Light) Or D-25 (Eclipse With Sunroof And Vanity Mirror Light) In Order To Check The ETACS-ECU Line Of The Power Supply To The Dome Light - Disconnect dome light connector D-04 (Eclipse without sunroof) or D-03 (Eclipse Spyder and Eclipse with sunroof and without vanity mirror light) or D-25 (Eclipse with sunroof and vanity mirror light) and measure at the wiring harness side. Measure the voltage between terminal 3 (Eclipse without sunroof), 7 (Eclipse with sunroof) or 2 (Eclipse Spyder) and ground. (Scheme 153) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 6. NO: Go to Step 4.
4. Check Dome Light Connector D-04 (Eclipse Without Sunroof) Or D-03 (Eclipse Spyder & Eclipse With Sunroof And Without Vanity Mirror Light) Or D-25 (Eclipse With Sunroof And Vanity Mirror Light) And ETACS-ECU Connector C-119 For Damage - Are dome light connector D-04, D-03 or D-25 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. Check that the dome light illuminates normally.
5. Check The Wiring Harness Between Dome Light Connector D-04 (Eclipse Without Sunroof) Or D-03 (Eclipse Spyder & Eclipse With Sunroof And Without Vanity Mirror Light) Or D-25 (Eclipse With Sunroof And Vanity Mirror Light) And ETACS-ECU Connector C-119 - Also check junction block connector C-102. If junction block connector C-102 is damaged, repair or replace the connector. Is the wiring harness between dome light connector D-04, D-03 or D-25 and ETACS-ECU connector C-119 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the dome light illuminates normally.
6. Check Dome Light Connector D-04 (Eclipse Without Sunroof) Or D-03 (Eclipse Spyder & Eclipse With Sunroof And Without Vanity Mirror Light) Or D-25 (Eclipse With Sunroof And Vanity Mirror Light) And ETACS-ECU Connector C-119 For Damage - Are dome light connector D-04, D-03 or D-25 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. Check that the dome light illuminates normally.
7. Check The Wiring Harness Between Dome Light Connector D-04 (Eclipse Without Sunroof) Or D-03 (Eclipse Spyder & Eclipse With Sunroof And Without Vanity Mirror Light) Or D-25 (Eclipse With Sunroof And Vanity Mirror Light) And ETACS-ECU Connector C-119 - Also check junction block connector C-102. If junction block connector C-102 is damaged, repair or replace the connector. Is the wiring harness between dome light connector D-04, D-03 or D-25 and ETACS-ECU connector C-119 in good condition? YES: Replace the ETACS-ECU. Check that the dome light illuminates normally. NO: Repair the wiring harness. Check that the dome light illuminates normally.
8. Check The Luggage Compartment Light Bulb - Is the luggage compartment light bulb in good condition? YES: Go to Step 9. NO: Replace the bulb. Check that the luggage compartment lights illuminate normally.
9. Measure At Luggage Compartment Light Connector F-21 In Order To Check The ETACS-ECU Line Of The Power Supply To The Luggage Compartment Light - Disconnect luggage compartment light connector F-21, and measure at the wiring harness side. Measure the voltage between terminal 1 and ground. (Scheme 154) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 12. NO: Go to Step 10.
10. Check Luggage Compartment Light Connectors F-21 And ETACS-ECU Connector C-119 For Damage - Are luggage compartment light connector F-21 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 11. NO: Repair or replace the connector. Check that the luggage compartment lights illuminate normally.
11. Check The Wiring Harness Between Luggage Compartment Light Connector F-21 And ETACS-ECU Connector C-119 - Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between luggage compartment light connector F-21 and ETACS-ECU connector C-119 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the luggage compartment lights illuminate normally.
12. Check Luggage Compartment Light Connectors F-21 And ETACS-ECU Connector C-118 For Damage - Are luggage compartment light connector F-21 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 13. NO: Repair or replace the connector. Check that the luggage compartment lights illuminate normally.
13. Check The Wiring Harness Between Luggage Compartment Light Connector F-21 And ETACS-ECU Connector C-118 - Also check intermediate connector C-90. If intermediate connector C-90 is damaged, repair or replace the connector. Is the wiring harness between luggage compartment light connector F-21 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 14. NO: Repair the wiring harness. Check that the luggage compartment lights illuminate normally.
14. Check The Input Signal By Using The Pulse Check - Check the input signal of the liftgate latch switch (vehicles with theft-alarm system) or liftgate light switch (vehicles without theft-alarm system). CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) When the liftgate is opened and closed, check if scan tool MB991502 sounds or not. When the liftgate is opened and closed, does scan tool MB991502 sound? Yes: Replace the ETACS-ECU. Check that the luggage compartment lights illuminate normally. No: Refer to «INSPECTION PROCEDURE P-9: LIFTGATE LATCH SWITCH OR THE TRUNK LID LATCH SWITCH SIGNAL IS NOT SENT TO THE ETACS-ECU»(ref-168713-S25335768062004111500000).
15. Check The Trunk Light Bulb - Is the luggage compartment bulb in good condition? YES: Go to Step 16. NO: Replace the bulb. Check that the trunk lights illuminate normally.
16. Measure At Trunk Light Connector F-21 In Order To Check The ETACS-ECU Line Of The Power Supply To The Trunk Light - Disconnect trunk light connector F-21, and measure at the wiring harness side. Measure the voltage between terminal 1 and ground. (Scheme 154) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 19. NO: Go to Step 17.
17. Check Trunk Light Connector F-21 And ETACS-ECU Connector C-119 For Damage - Are trunk light connector F-21 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 18. NO: Repair or replace the connector. Check that the trunk lights illuminate normally.
18. Check The Wiring Harness Between Trunk Light Connector F-21 And ETACS-ECU Connector C-119 - Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between trunk light connector F- 21 and ETACS-ECU connector C-119 in good condition? YES: No action to be taken. NO: Repair the wiring harness. Check that the trunk lights illuminate normally.
19. Check Trunk Light Connectors F-21 And ETACS-ECU Connector C-118 For Damage - Are trunk light connector F-21 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 20. NO: Repair or replace the connector. Check that the trunk lights illuminate normally.
20. Check The Wiring Harness Between Trunk Light Connector F-21 And ETACS-ECU Connector C-118 - Also check intermediate connector C-90. If intermediate connector C-90 is damaged, repair or replace the connector. Is the wiring harness between trunk light connector F- 21 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 21. NO: Repair the wiring harness. Check that the trunk lights illuminate normally.
21. Check The Input Signal By Using The Pulse Check - Check the input signal of the trunk lid latch switch (vehicles with theft-alarm system) or trunk light switch (vehicles without theft-alarm system). CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) When the trunk lid is opened and closed, check if scan tool MB991502 sounds or not. When the trunk lid is opened and closed, does scan tool MB991502 sound? Yes: Replace the ETACS-ECU. Check that the trunk lights illuminate normally. No: Refer to «INSPECTION PROCEDURE P-9: LIFTGATE LATCH SWITCH OR THE TRUNK LID LATCH SWITCH SIGNAL IS NOT SENT TO THE ETACS-ECU»(ref-168713-S25335768062004111500000).

1. Malfunction of the key reminder switch
2. Malfunction of the door switches
3. Malfunction of the driver's door lock actuator switch
4. Malfunction of the ETACS-ECU
5. Damaged harness wires or connectors

Scheme 155

1. Check The Dome Light - If a door is opened while the dome light switch is at "doorlinked" position, the dome light should illuminate. Does the dome light illuminate normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE M-1: INTERIOR LIGHT: DOME LIGHT, LUGGAGE COMPARTMENT LIGHT, TRUNK LIGHT AND DOOR-AJAR INDICATOR LIGHT DOES NOT ILLUMINATE OR TURN OFF NORMALLY»(ref-168713-S29977122912004112400000).
2. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to Step 3. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
3. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: OFF Driver's and front passenger's door: open Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 155) Does the scan tool display the items "IG SW (IG1)", "DR DOOR SW" and "PASS DOOR SW" as normal condition? YES: Go to Step 4. NO: Normal condition is not displayed for "IG SW (IG1)": Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: Normal condition is not displayed for "DR DOOR SW" and "P/S DOOR SW": Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).
4. Check The Input Signal By Using The Pulse Check - Check the input signal from the following switch: Key reminder switch (operate by removing and reinserting ignition key) If the switches, which are applicable for the input signal check, are operated, check if scan tool MB991502 sounds or not. Does scan tool MB991502 sound when the key reminder switch is operated? YES: Replace the ETACS-ECU. Check that the dome light dimming function works normally. NO: Refer to «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000).

1. Malfunction of the door switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 156

1. Check The Front Dome Light And The Rear Dome Light - If the front dome light switch and the rear dome light switch are moved to the "door interlock position", the front dome light and the rear dome light should illuminate when either door is opened. Do the front dome light and the rear dome light illuminate normally? YES: Go to Step 2. NO: Neither the front dome light nor the rear dome light illuminates normally: Refer to «INSPECTION PROCEDURE M-1: INTERIOR LIGHT: DOME LIGHT, LUGGAGE COMPARTMENT LIGHT, TRUNK LIGHT AND DOOR-AJAR INDICATOR LIGHT DOES NOT ILLUMINATE OR TURN OFF NORMALLY»(ref-168713-S29977122912004112400000). NO: Either the front dome light or the rear dome light illuminates normally: Refer to «INSPECTION PROCEDURE M-2: INTERIOR LIGHT: THE DOME LIGHT, LUGGAGE COMPARTMENT LIGHT OR TRUNK LIGHT DOES NOT ILLUMINATE OR GO OUT NORMALLY»(ref-168713-S11998153512004120800000).
2. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the ETACS-ECU. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "LOCK" (OFF) position, scan tool MB991502 should show "OK" on the "ETACS ECU" menu. Is "OK" displayed on the "ETACS ECU" menu? YES: Go to STEP 3. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
3. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the following switches: Ignition switch: OFF Driver's and front passenger's door: open Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 156) Does the scan tool display the items "IG SW (IG1)", "IG SW (ACC)" and "PASS DOOR SW" as normal condition? YES: Go to Step 4. NO: Normal condition is not displayed for "IG SW (IG1)": Refer to «INSPECTION PROCEDURE O-2: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (IG1)»(ref-168713-S41821116252004111800000). NO: Normal condition is not displayed for "IG SW (ACC)": Refer to «INSPECTION PROCEDURE O-1: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE IGNITION SWITCH (ACC)»(ref-168713-S15958812282004112400000). NO: Normal condition is not displayed for "DR DOOR SW" and "P/S DOOR SW": Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).
4. Check The Input Signal (By Using The Pulse Check) - Check the following switches and input signals: Interior light loaded signal (operate by illuminating one of the interior lights) If the switches, which are applicable for the input signal check, are operated, check if scan tool MB991502 sounds or not. Does scan tool MB991502 sound when the interior light loaded signal is operated? YES: Replace the ETACS-ECU. Check that the dome light illuminates normally. NO: Refer to «INSPECTION PROCEDURE P-14: ETACS-ECU DOES NOT RECEIVE A INTERIOR LIGHT LOADED SIGNAL»(ref-168713-S11638785352004120800000).

Trouble Shooting Hints

1. Malfunction Of The Theft-Alarm Indicator Light
2. Malfunction Of The Ignition Key Reminder Switch
3. Malfunction Of The Driver's Or Front Passenger's Door Switch
4. Malfunction Of The Driver's Or Front Passenger's Door Lock Key Cylinder Switch
5. Malfunction Of The Driver's And Front Passenger's Door Lock Actuator Switch
6. Malfunction Of The Liftgate Latch Switch
7. Malfunction Of The Liftgate Lock Key Cylinder Switch Signal
8. Malfunction Of The Trunk Lid Latch Switch
9. Malfunction Of The Hood Switch
10. Malfunction Of The Transmitter
11. Malfunction Of The ETACS-ECU
12. Damaged Harness Wires Or Connectors

Scheme 157

Scheme 158

Scheme 159

Scheme 160

1. Check Power Supply Circuit To The ETACS-ECU - Do the hazard warning lights work normally when the ignition switch is turned to the "LOCK" (OFF) position? YES: Go to next step. NO: Refer to «INSPECTION PROCEDURE A-3: COMMUNICATION WITH THE ETACS-ECU IS IMPOSSIBLE»(ref-168713-S35014109862004111600000).
2. Check At ETACS-ECU Connector C-118 In Order To Check Theft-Alarm Indicator Light Circuit - Disconnect ETACS-ECU connector C-118, and measure at the wiring harness side. (Scheme 157) The theft-alarm indicator light should illuminate when terminal 74 is grounded. Does the theft-alarm indicator light illuminate? YES: Go to step 9. NO: Go to next step.
3. Check Theft-Alarm Indicator Light - Remove the combination meter. Disconnect combination meter connector C-42. (Scheme 158) The theft-alarm indicator light should illuminate when battery voltage is applied between terminals 31 and 32. Does theft-alarm indicator light illuminate? YES: Go to next step. NO: Replace theft-alarm indicator light. Theft-alarm indicator light should illuminate and theft-alarm system should be set normally.
4. Check Combination Meter Connector C-42 In Order To Check Battery Power Supply Line To Theft-Alarm Indicator Light Circuit - Disconnect combination meter connector C-42, and check at the wiring harness side. (Scheme 159) Measure the voltage between terminal 32 and ground. The measured value should be approximately 12 volts (battery positive voltage). Does measured voltage correspond with range? YES: Go to step 7. NO: Go to next step.
5. Check Combination Meter Connector C-42 For Damage - (Scheme 160) Is combination meter connector C-42 in good condition? YES: Go to next step. NO: Repair or replace connector. Theft-alarm indicator light should illuminate and theft-alarm system should be set normally.
6. Check Wiring Harness Between Combination Meter Connector C-42 And Battery -. (Scheme 10) NOTE: Also check joint connector C-78 and intermediate connector C-89. If joint connector C-78 or intermediate connectors C-89 is damaged, repair or replace connector. Is wiring harness between combination meter connector C-42 and battery in good condition? YES: No action is taken. NO: Repair wiring harness. Theft-alarm indicator light should illuminate and theft-alarm system should be set normally.
7. Check Combination Meter Connector C-42 And ETACS-ECU Connector C-118 For Damage - (Scheme 4)and (Scheme 160). Are combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: Go to next step NO: Repair or replace connector. Theft-alarm indicator light should illuminate and theft-alarm system should be set normally.
8. Check Wiring Harness Between Combination Meter Connector C-42 And ETACS-ECU Connector C-118 - (Scheme 160)and (Scheme 4). Is wiring harness between combination meter connector C-42 and ETACS-ECU connector C-118 in good condition? YES: Take no action. NO: Repair wiring harness. Theft-alarm indicator light should illuminate and the theft-alarm system should be set normally.
9. Check Input Signal By Using Service Data Of SWS Monitor - Open both front doors in order to check the input signals from the driver's and the front passenger's door switches. Connect scan tool MB991502 to the data link connector. (Scheme 7) CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "ETACS-ECU" (DATA LIST), and check that scan tool displays ON for item No. 32 "DR DOOR SW" and item No. 46 "PASS DOOR SW". Does the scan tool shows the respective normal condition for item "DR DOOR SW" and "PASS DOOR SW"? YES: Go to next step. NO: Refer to «INSPECTION PROCEDURE O-6: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR THE FRONT PASSENGER'S DOOR SWITCH»(ref-168713-S30425983162004111800000).
10. Check The Input Signal (By Using The Pulse Check) - Connect scan tool MB991502 to DLC. (Scheme 161) Check input signals from the following switches (Scan tool should sound when each switch is operated): Key reminder switch: Remove and reinsert ignition key. Driver's and front passenger's door lock actuator switches: Lock or unlock each door. Driver's and front passenger's door lock key cylinder switches: Operate door lock key cylinder at each door. Hood switch: Open and close hood. Liftgate or trunk lid latch switch: Open and close liftgate or trunk lid. Liftgate or trunk lid lock key cylinder: Operate liftgate or trunk lid lock key cylinder.

Scheme 161

Does scan tool sound in all cases?

1. YES : Replace ETACS-ECU. Theft-alarm indicator light should be illuminated and the theft-alarm system should be set normally.
2. NO : If scan tool does not sound when the key reminder switch is operated, see «INSPECTION PROCEDURE P-1: ETACS-ECU DOES NOT RECEIVE A SIGNAL FROM KEY REMINDER SWITCH»(ref-168713-S10289700082004111100000) . If scan tool does not sound when the driver's and the front passenger's door lock actuator switches are operated, see «INSPECTION PROCEDURE P-5: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR PASSENGER'S DOOR LOCK ACTUATOR SWITCH»(ref-168713-S32073915452004111200000) . If scan tool does not sound when the driver's and the front passenger's door lock actuator switches are operated, see «INSPECTION PROCEDURE P-4: THE ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM THE DRIVER'S OR FRONT PASSENGER'S DOOR LOCK KEY CYLINDER SWITCH»(ref-168713-S39215108752004111100000) . If scan tool does not sound when the hood switch is operated, see «INSPECTION PROCEDURE P-8: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM HOOD SWITCH»(ref-168713-S27520338902004111500000) . If, when the liftgate latch switch is operated, scan tool does not sound, see «INSPECTION PROCEDURE P-9: LIFTGATE LATCH SWITCH OR THE TRUNK LID LATCH SWITCH SIGNAL IS NOT SENT TO THE ETACS-ECU»(ref-168713-S25335768062004111500000) .

1. Malfunction Of The Theft-Alarm Horn
2. Malfunction Of The Horn
3. Malfunction Of The Theft-Alarm Horn Relay
4. Malfunction Of The Horn Relay
5. Malfunction Of The ETACS-ECU
6. Damaged Harness Wires Or Connectors

Scheme 162

Scheme 163

Scheme 164

Scheme 165

Scheme 166

Scheme 167

Scheme 168

Scheme 169

Scheme 170

Scheme 171

Scheme 172

Scheme 173

Scheme 174

Scheme 175

1. Check Which Horn Is Defective - Check which horn does not sound when the theft-alarm system is triggered. Which horn does not sound? Theft-alarm horn: go to next step. Horn: go to step 12. Theft-alarm horn and all vehicle horns: replace ETACS-ECU. All vehicle horns (including theft-alarm horn) should sound when theft-alarm is triggered.
2. Check Theft-Alarm Horn - Connect the battery as shown, and check that the theft-alarm horn sounds. (Scheme 162) Does theft-alarm horn sound? YES: Go to next step. NO: Replace theft-alarm horn. All vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
3. Check Theft-Alarm Horn Relay - (Scheme 163) Is theft-alarm horn relay normal? YES: Go to next step. NO: Replace theft-alarm horn relay. All vehicle horn (including theft-alarm horn) should sound when theft-alarm system is triggered.
4. Measure At Theft-Alarm Horn Relay Connector A-06X In Order To Check Fusible Link (4) Line Of Power Supply System To Theft-Alarm Horn Relay - Disconnect theft-alarm horn relay connector A-06X, and measure at the relay box side. (Scheme 164) Measure the voltage between terminal numbers 1, 2 and ground. The measured value should be approximately 12 volts (battery positive voltage). Does measured voltage correspond with range? YES: Go to step 7. NO: Go to next step.
5. Check Theft-Alarm Horn Relay Connector A-06X For Damage - (Scheme 165) Is theft-alarm horn relay connector A-06X in good condition? YES: Go to next step. NO: Repair or replace connector. All vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
6. Check Wiring Harness Between Theft-Alarm Horn Relay Connector A-06X And Fusible Link (4) - (Scheme 166) Is wiring harness between theft-alarm horn relay connector A-60X and fusible link (4) in good condition? YES: Replace ETACS-ECU. All vehicle horn (including theft-alarm horn) should sound when theft-alarm system is triggered NO: Repair wiring harness. All vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
7. Check Theft-Alarm Horn Relay Connector A-06X And Theft-Alarm Horn Connector For Damage - Are theft-alarm horn relay connector A-06X and horn connector A-25 in good condition? YES: Go to next step. NO: Repair or replace connector. All vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
8. Check Wiring Harness Between Theft-Alarm Horn Relay Connector A-06X And Theft Alarm Horn Connector A-25 - (Scheme 167) Is wiring harness between horn relay connector A-06X and theft-alarm horn connector A-25 in good condition? YES: Go to next step. NO: Repair wiring harness. All vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
9. Check Theft-Alarm Horn Relay Connector A-06X And ETACS-ECU Connector C-117 For Damage - (Scheme 168) Are theft-alarm horn relay connector A-06X and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace connector. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
10. Check Wiring Harness Between Theft-Alarm Horn Relay Connector A-06X And ETACS-ECU Connector C-117 - Also, check intermediate connector C-89. (Scheme 169) Is wiring harness between theft-alarm horn relay connector A-06X and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair wiring harness. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
11. Check The Fit Of Theft-Alarm Horn - The theft-alarm horn is grounded to the vehicle body via its mounting bolt. Is theft-alarm horn installed correctly? YES: Replace ETACS-ECU. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered. NO: Install theft-alarm horn correctly. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
12. Check Horn Relay - (Scheme 170) Is horn relay normal? YES: Go to next step. NO: Replace horn relay. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
13. Measure At Horn Relay Connector A-05X In Order To Check Battery Power Supply System To Horn Relay - Disconnect horn relay connector A-05X, and measure at the relay box side. (Scheme 171) Measure the voltage between terminal numbers 1, 2 and ground. The measured value should be approximately 12 volts (battery positive voltage). Does measured voltage correspond with range? YES: Go to step 16. NO: Go to next step.
14. Check Horn Connector A-05X For Damage - (Scheme 172) Is horn relay connector A-05X in good condition? YES: Go to next step. NO: Repair or replace connector. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
15. Check Wiring Harness Between Horn Relay Connector A-05X And Battery - (Scheme 172) Is wiring harness between horn relay connector A-05X and battery in good condition? YES: Replace ETACS-ECU. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered. NO: Repair wiring harness. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
16. Check Horn Relay Connector A-05X And Horn Connector A-27 For Damage - (Scheme 173) Are horn relay connector A-05X and horn connector A-27 in good condition? YES: Go to next step. NO: Repair or replace connector. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
17. Check Wiring Harness Between Horn Relay Connector A-05X And Horn Connector A-27 - Is wiring harness between horn relay connector A-05X and horn connector A-27 in good condition? YES: Go to next step. NO: Repair wiring harness. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
18. Check Rear Horn Relay Connector A-05X And ETACS-ECU Connector C-117 For Damage - (Scheme 168) Are horn relay connector A-05X and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace connector. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
19. Check Wiring Harness Between Horn Relay Connector A-05X And ETACS-ECU Connector C-117 - Also, check intermediate connector C-89. (Scheme 174) Is wiring harness between horn relay connector A-05X and ETACS-ECU connector C-117 in good condition? YES: Replace ETACS-ECU. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered. NO: Repair wiring harness. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
20. Check Horn - Remove the horn. Connect the battery as shown, and check that the horn sounds. (Scheme 175) Is horn normal? YES: Go to next step. NO: Replace horn. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.
21. Check The Fit Of The Horn - Check that horn is installed correctly. The horn is grounded to the vehicle body via its mounting bolt. Is horn installed correctly? YES: Replace ETACS-ECU. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered. NO: Install horn correctly. All the vehicle horns (including theft-alarm horn) should sound when theft-alarm system is triggered.

1. Malfunction Of The Front-ECU
2. Malfunction Of The ETACS-ECU
3. Damaged Harness Wires Or Connectors

1. Check Headlight (High Beam) Operation - Do headlights illuminate at high beam normally? YES : Go to next step. NO : Refer to «INSPECTION PROCEDURE J-3: HEADLIGHT, TAIL LIGHT: HEADLIGHTS (HIGH-BEAM) DO NOT ILLUMINATE NORMALLY»(ref-168713-S41283862272004120200000) .
2. Replace ECU - Replace the ETACS-ECU. The headlights should flash at high beam when the theft-alarm system is triggered. Do headlights flash at high beam when theft-alarm system is triggered? YES : No action is to be taken. NO : Replace front ECU. Headlights should flash at high beam when theft-alarm system is triggered.

1. Malfunction Of The ETACS-ECU
2. Damaged Harness Wires Or Connectors

1. Check Keyless Entry System - Does keyless entry system work normally? YES: Go to next step. NO: Refer to «INSPECTION PROCEDURE E-1: KEYLESS ENTRY SYSTEM: KEYLESS ENTRY SYSTEM DOES NOT OPERATE»(ref-168713-S01644694792004112400000).
2. Check Input Signal (By Using The Pulse Check) - Check the input signals from the transmitter "PANIC" switch. Connect scan tool MB991502 to the data link connector. (Scheme 7) When the transmitter "PANIC" switch is operated (turned on), check that scan tool MB991502 sounds. CAUTION: To prevent damage to scan tool MB991502, always turn ignition switch to LOCK (OFF) position before connecting or disconnecting scan tool MB991502. Does scan tool MB991502 sound when transmitter PANIC switch is operated? YES: Replace ETACS-ECU. Check that panic alarm works normally. NO: Refer to «INSPECTION PROCEDURE P-13: TRANSMITTER: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM LOCK, UNLOCK, PANIC OR TRUNK SWITCH»(ref-168713-S11008917442003062700000).

1. Malfunction of the ETACS-ECU
2. Damaged harness wires or connectors

Scheme 176

Scheme 177

1. Measure At ETACS-ECU Connector C-119 In Order To Check The Line From The Ignition Switch (ACC) - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Turn the ignition switch to the "ACC" position. Measure the voltage between terminal 4 and ground. (Scheme 176) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the ETACS-ECU. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S41208253782004120800000), work normally, the input signal from the ignition switch (ACC) should be normal. NO: Go to Step 2.
2. Check ETACS-ECU Connector C-119 For Damage - (Scheme 177) Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S41208253782004120800000), work normally, the input signal from the ignition switch (ACC) should be normal.
3. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ignition Switch (ACC) - Also check intermediate connector C-89 and junction block connector C-112. If intermediate connector C-89 or junction block connector C-112 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and ignition switch (ACC) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S41208253782004120800000), work normally, the input signal from the ignition switch (ACC) should be normal.

1. Malfunction of the ETACS-ECU
2. Damaged harness wires or connectors

Scheme 178

Scheme 179

1. Measure At ETACS-ECU Connector C-119 In Order To Check The Line From The Ignition Switch (IG1) To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 8 and ground. (Scheme 178) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S08989083342004120800000), work normally, the input signal from the ignition switch (IG1) should be normal. NO: Go to Step 2.
2. Check ETACS-ECU Connector C-119 For Damage - (Scheme 179) Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S08989083342004120800000), work normally, the input signal from the ignition switch (IG1) should be normal.
3. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ignition Switch (IG1) - Also check junction block connector C-111. If junction block connector C-111 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and ignition switch (IG1) in good condition? YES: No action to be taken. NO: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S08989083342004120800000), work normally, the input signal from the ignition switch (IG1) should be normal.

1. Malfunction of the fog light switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 180

Scheme 181

Scheme 182

1. Check The Fog Light Switch - Remove the fog light switch. Then check continuity between the switch terminals. (Scheme 180) Is the fog light switch in good condition? YES: Go to Step 2. NO: Repair the fog light switch. If the fog light switch operates normally, it indicates that a correct signal is sent from the fog light switch.
2. Measure At Fog Light Switch Connector C-76 In Order To Check The Ground Circuit To The Fog Light Switch - Disconnect fog light switch connector C-76, and measure at the wiring harness side. Measure the resistance value between terminal 7 and ground. (Scheme 181) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Fog Light Switch Connector C-76 For Damage - (Scheme 182) Is fog light switch connector C-76 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. Repair the fog light switch. If the fog light switch operates normally, it indicates that a correct signal is sent from the fog light switch.
4. Check The Wiring Harness Between Fog Light Switch Connector C-76 And Ground - Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between fog light switch connector C-76 and the ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the fog light switch operates normally, it indicates that a correct signal is sent from the fog light switch.
5. Check Fog Light Switch Connector C-76 And ETACS-ECU Connector C-118 For Damage - Are fog light switch connector C-76 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the for light switch operates normally, it indicates that a correct signal is sent from the fog light switch.
6. Check The Wiring Harness Between Fog Light Switch Connector C-76 And ETACS-ECU Connector C-118 - Is the wiring harness between fog light switch connector C-76 and ETACS-ECU connector C-118 in good condition? YES: Replace the ETACS-ECU. If the fog light switch operates normally, it indicates that a correct signal is sent from the fog light switch. NO: Repair the wiring harness. If the fog light switch operates normally, it indicates that a correct signal is sent from the fog light switch.

1. Malfunction of the backup light switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 183)

Scheme 183

Scheme 184

Scheme 185

1. Check The Backup Light Switch - Disconnect backup light switch connector B-37. Then check continuity between the switch terminals. (Scheme 184) Is the backup light switch in good condition? YES: Go to Step 2. NO: Replace the backup light switch. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.
2. Check At Backup Light Switch Connector B-37 In Order To Check The Ignition Switch (Ig1) Line Of The Power Supply To The Backup Light Switch - Disconnect backup light switch connector B-37, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 1 and ground. (Scheme 185) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Backup Light Switch Connector B-37 For Damage - Is the backup light switch connector B-37 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.
4. Check The Wiring Harness Between Backup Light Switch Connector B-37 And The Ignition Switch (IG1) - Also check junction block connectors C-111, C-112 and intermediate connector C-28. If junction block connectors C- 111, C-112 or intermediate connectors C-28 is damaged, repair or replace the connector. Is the wiring harness between backup light switch connector B-37 and the ignition switch (IG1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.
5. Check Backup Light Switch Connector B-37 And ETACS-ECU Connector C-117 For Damage - Are backup light switch connector B-37 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.
6. Check The Wiring Harness Between Backup Light Switch Connector B-37 And ETACS-ECU Connector C-117 - Also check intermediate connector C-28. If intermediate connectors C-28 is damaged, repair or replace the connector. Is the wiring harness between backup light switch connector B-37 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the backup light switch.

1. Malfunction of the park/neutral position switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 186)

Scheme 186

Scheme 187

Scheme 188

1. Check The Park/Neutral Position Switch - Disconnect park/neutral position switch connector B-41. Then check continuity between the switch terminals. (Scheme 187) Is the park/neutral position switch in good condition? YES: Go to Step 2. NO: Replace the park/neutral position switch. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch.
2. Check At Park/Neutral Switch Connector B-41 In Order To Check The Ignition Switch (IG1) Line Of The Power Supply To The Park/Neutral Switch - Disconnect park/neutral position switch connector B-41, and measure at the wiring harness side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 8 and ground. (Scheme 188) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Park/Neutral Position Switch Connector B-41 For Damage - Is park/neutral position switch connector B-41 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch.
4. Check The Wiring Harness Between Park/Neutral Position Switch Connector B-41 And The Ignition Switch (IG1) - Also check junction block connectors C-111, C-112 and intermediate connector C-28. If junction block connectors C- 111, C-112 or intermediate connectors C-28 is damaged, repair or replace the connector. Is the wiring harness between park/neutral position switch connector B-41 and the ignition switch (IG1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch.
5. Check Park/Neutral Position Switch Connector B-41 And ETACS-ECU Connector C-117 For Damage - Are park/neutral position switch connector B-41 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch.
6. Check The Wiring Harness Between Park/Neutral Position Switch Connector B-41 And ETACS-ECU Connector C-117 - Also check intermediate connector C-28. If intermediate connectors C-28 is damaged, repair or replace the connector. Is the wiring harness between park/neutral position switch connector B-41 and ETACS-ECU connector C- 117 in good condition? YES: Replace the ETACS-ECU. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct "R" position signal is sent from the park/neutral position switch.

1. Malfunction of the driver's or front passenger's door switches
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 189)

Scheme 189

Scheme 190

Scheme 191

Scheme 192

Scheme 193

1. Check The Input Signal By Using Service Data Of The SWS Monitor - Check the input signals from the driver's and front passenger's door lock actuator switch. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 Select "ETACS-ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the illustration. (Scheme 190) The scan tool shows the respective normal condition for item "DR DOOR SW" and "PASS DOOR SW."? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's or the front passenger's door switch should be normal. NO: The scan tool does not show the respective normal condition for item "DR DOOR SW." Go to Step 2. NO: The scan tool does not show the respective normal condition for item "PASS DOOR SW." Go to Step 6.
2. Check The Driver's Door Switch - Remove the driver's door switch. Then check the continuity between the switch terminals and the switch body. (Scheme 191) Is the driver's door switch in good condition? YES: Go to Step 3. NO: Replace the driver's door switch. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's door switch should be normal.
3. Measure At The Lower Metal Part Of The Driver's Door Switch In Order To Check The Ground Circuit To The Driver's Door Switch - Check that the driver's door switch is grounded to the vehicle body by means of its mounting screw. Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 192) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 4. NO: Check the fit of the switch, and repair if necessary. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's door switch should be normal.
4. Check Driver's Door Switch Connector D-11 And ETACS-ECU Connector C-119 For Damage - Are driver's door switch connector D-11 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's door switch should be normal.
5. Check The Wiring Harness Between Driver's Door Switch Connector D-11 And ETACS-ECU Connector C-119 - Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between driver's door switch connector D-11 and ETACS-ECU connector C-119 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's door switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the driver's door switch should be normal.
6. Check The Passenger's Door Switch - Remove the passenger's door switch. Then check the continuity between the switch terminals and the switch body. (Scheme 193) Is the passenger's door switch in good condition? YES: Go to Step 7. NO: Replace the passenger's door switch. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the passenger's door switch should be normal.
7. Measure At The Lower Metal Part Of The Passenger's Door Switch In Order To Check The Ground Circuit To The Passenger's Door Switch - Check that the passenger's door switch is grounded to the vehicle body by means of its mounting screw. Remove the cap, and measure the resistance value between the lower metal part and the ground. (Scheme 192) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 8. NO: Check the fit of the switch, and repair if necessary. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the passenger's door switch should be normal.
8. Check Passenger's Door Switch Connector D-01 And ETACS-ECU Connector C-118 For Damage - Are passenger's door switch connector D-01 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the passenger's door switch should be normal.
9. Check The Wiring Harness Between Passenger's Door Switch Connector D-01 And ETACS-ECU Connector C-118 - Also check intermediate connector C-90. If intermediate connectors C-90 is damaged, repair or replace the connector. Is the wiring harness between passenger's door switch connector D-01 and ETACS-ECU connector C-118 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the passenger's door switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S22107457832004120800000), work normally, the input signal from the passenger's door switch should be normal.

1. Malfunction of column switch (turn-signal light and lighting switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wipes or connectors

Scheme 194

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the column-ECU. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "COLUMN ECU" menu. Is "OK" displayed on the "COLUMN ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000).
2. Check The Turn-Signal Light And Lighting Switch - Remove the turn-signal light and the lighting switch. Then check continuity between the switch terminals. (Scheme 194) Is the turn-signal light and lighting switch in good condition? YES: Go to Step 3. NO: Replace it. The input signal from the column switch (turn-signal light and lighting switch) should be able to be checked and the functions, which are described in the «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S10026340482004120900000), should work normally.
3. Replacement Of ECU - Replace the column switch. The input signal from the column switch (turn-signal light and lighting switch) should be able to be checked and the functions, which are described in the «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S10026340482004120900000), should work normally. Is the input signal from the column switch (turn-signal light and lighting switch) input normally? YES: There is no action to be taken. NO: Replace the ETACS-ECU. The input signal from the column switch (turn-signal light and lighting switch) should be able to be checked and the functions, which are described in the «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S10026340482004120900000), should work normally.

1. Malfunction of the column switch (windshield wiper and washer switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 195

1. Use Scan Tool To Select "ECU CHECK" On The SWS Monitor Display - Check the column-ECU. CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502. Connect scan tool MB991502 to the data link connector. (Scheme 7) Connect SWS monitor kit MB991862 to the column switch connector. see scheme 3 When the ignition switch is turned to the "ON" position, scan tool MB991502 should show "OK" on the "COLUMN ECU" menu. Is "OK" displayed on the "COLUMN ECU" menu? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE A-2: COMMUNICATION WITH THE COLUMN SWITCH (COLUMN-ECU) IS IMPOSSIBLE»(ref-168713-S25892490342004111600000).
2. Check The Windshield Wiper And Washer Switch - Remove the windshield wiper and washer switch. Then check continuity between the switch terminals. (Scheme 195) Are the windshield wiper and washer switch in good condition? YES: Go to Step 3. NO: Replace the column switch. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S38770346262004120900000), work normally, the input signal from the column switch (windshield wiper and washer switch) should be normal.
3. Replace The ECU - Replace the column switch (turn-signal light and lighting switch). If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S38770346262004120900000), work normally, the input signal from the column switch (windshield wiper and washer switch) should be normal. Does the column switch (windshield wiper and washer switch) send a normal signal to the ECU? YES: No action to be taken. NO: Replace the ETACS-ECU. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S38770346262004120900000), work normally, the input signal from the column switch (windshield wiper and washer switch) should be normal.

1. Malfunction of the column switch (windshield wiper and washer switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Scheme 196

Scheme 197

1. Check The Windshield Intermittent Wiper Interval Adjusting Knob - Remove the windshield wiper and washer switch, and check at the switch side. Measure the resistance value between terminals 27 and 28. (Scheme 196) The measured resistance should change smoothly from approximately 0 ohm ("FAST" position) to 1 kilohm ("SLOW" position). Is the windshield intermittent wiper interval adjusting knob in good condition? YES: Go to Step 2. NO: Replace the column switch (windshield wiper and washer switch). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.
2. Check Column Switch Connector C-86 And ETACS-ECU Connector C-118 For Damage - (Scheme 197) Are column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.
3. Check The Wiring Harness Between Column Switch Connector C-86 And ETACS-ECU Connector C-118 - Is the wiring harness between column switch connector C-86 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 4. NO: Repair the wiring harness. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.
4. Replace The ECU - Replace the ETACS-ECU. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU. Can input signal be confirmed when the windshield intermittent wiper interval adjusting knob is operated? YES: No action to be taken. NO: Replace the column switch (windshield wiper and washer switch). If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

1. Malfunction of the sunroof switch
2. Malfunction of the sunroof motor assembly
3. Malfunction of the ETACS-ECU
4. Damaged harness wires or connectors

Scheme 198

1. Check The Sunroof Operation - Does the sunroof work normally? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE F-1: SUNROOF: SUNROOF DOES NOT OPERATE»(ref-168713-S06791596982004112400000).
2. Check Sunroof Motor Assembly Connector D-06 And ETACS-ECU Connector C-118 For Damage - (Scheme 198) Are sunroof motor assembly connector D-06 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. If the sunroof operates normally, it indicates that a correct signal is sent from the sunroof switch.
3. Check The Wiring Harness Between Sunroof Motor Assembly Connector D-06 And ETACS-ECU Connector C- 118 - Also check intermediate connectors C-31 and joint connector C-78. If intermediate connector C-31 or joint connector C-78 is damaged, repair or replace the connector. Is the wiring harness between sunroof motor assembly connector D-06 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 4. NO: Repair the wiring harness. If the sunroof operates normally, it indicates that a correct signal is sent from the sunroof switch.
4. Replace The ECU - Replace the sunroof motor assembly. If the sunroof operates normally, it indicates that a correct signal is sent from the sunroof switch. Does the ETACS-ECU receive correct signals from the sunroof switch? YES: No action to be taken. NO: Replace the ETACS-ECU. If the sunroof operates normally, it indicates that a correct signal is sent from the sunroof switch.

1. Malfunction Of The Key Reminder Switch
2. Malfunction Of The ETACS-ECU
3. Damaged Harness Wires Or Connectors

Scheme 199

Scheme 200

Scheme 201

1. Check The Key Reminder Switch - Disconnect key reminder switch connector C-88. Then check continuity between terminals. (Scheme 199) Is the key reminder switch in good condition? YES: Go to next step. NO: Replace the key reminder switch. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal.
2. Measure At Key Reminder Switch Connector C-88 In Order To The Ground Circuit To The Key Reminder Switch - Disconnect key reminder switch connector C-88, and measure at the wiring harness side. Measure the resistance value between terminal 4 and ground. (Scheme 200) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 5. NO: Go to next step.
3. Check Key Reminder Switch Connector C-88 For Damage - Is key reminder switch connector C-88 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal.
4. Check The Wiring Harness Between Key Reminder Switch Connector C-88 And Ground - Is the wiring harness between key reminder switch connector C-88 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal.
5. Check Key Reminder Switch Connector C-88 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are key reminder switch connector C-88 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal.
6. Check The Wiring Harness Between Key Reminder Switch Connector C-88 And ETACS-ECU Connector C-117 - Is the wiring harness between key reminder switch connector C-88 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S32325544412004111100000), work normally, the input signal from the key reminder switch should be normal.

1. Malfunction of the hazard warning light switch
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 202)

Scheme 202

Scheme 203

Scheme 204

1. Check The Hazard Warning Light Switch - (Scheme 203) Is the hazard warning light switch in good condition? YES: Go to Step 2. NO: Replace the hazard warning light switch. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal.
2. Measure At Hazard Warning Light Switch Connector C-10 In Order To Check The Ground Circuit To The Hazard Warning Light Switch - Disconnect hazard warning light switch connector C-10, and measure at the wiring harness side. Measure the resistance value between terminal 2 and ground. (Scheme 204) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Hazard Warning Light Switch Connector C-10 For Damage - Is hazard warning light switch connector C-10 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal.
4. Check The Wiring Harness Between Hazard Warning Light Switch Connector C-10 And Ground - Is the wiring harness between hazard warning light switch connector C-10 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal.
5. Check Hazard Warning Light Switch Connector C-10 And ETACS-ECU Connector C-118 For Damage - Are hazard warning light switch connector C-10 and ETACS-ECU connector C-118 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal.
6. Check The Wiring Harness Between Hazard Warning Light Switch Connector C-10 And ETACS-ECU Connector C-118 - Is the wiring harness between hazard warning light switch connector C-10 and ETACS-ECU connector C-118 in good condition? YES: Replace the ETACS-ECU. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal. NO: Repair the wiring harness. If the equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S03041463602004120900000), work normally, the input signal from the hazard warning light switch should be normal.

1. Malfunction of the driver's inner seat belt (driver's seat belt switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 205)

Scheme 205

Scheme 206

Scheme 207

1. Check The Driver's Seat Belt Switch - Disconnect driver's seat belt switch connector D-13. Then check continuity between the switch terminals. (Scheme 206) Is the driver's seat belt switch in good condition? YES: Go to Step 2. NO: Replace the driver's inner seat belt. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal.
2. Measure At Driver's Seat Belt Switch Connector D-13 In Order To Check The Ground Circuit To The Driver's Seat Belt Switch - Disconnect driver's seat belt switch connector D-13, and measure at the harness side. Measure the resistance value between terminal 2 and ground. (Scheme 207) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 5. NO: Go to Step 3.
3. Check Driver's Seat Belt Switch Connector D-13 For Damage - Is the driver's seat belt switch connector D-13 in good condition? YES: Go to Step 4. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal.
4. Check The Wiring Harness Between Driver's Seat Belt Switch Connector D-13 And Ground - Is the wiring harness between driver's seat belt switch connector D-13 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal.
5. Check Driver's Seat Belt Switch Connector D-13 And ETACS-ECU Connector C-117 For Damage - Are driver's seat belt switch connector D-13 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal.
6. Check The Wiring Harness Between Driver's Seat Belt Switch Connector D-13 And ETACS-ECU Connector C- 117 - Also check intermediate connector C-90. If intermediate connectors C-90 is damaged, repair or replace the connector. Is the wiring harness between driver's seat belt switch connector D-13 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S27815025162004120900000), work normally, the input signal from the driver's seat belt switch should be normal.

1. Malfunction Of The Driver's Or Front Passenger's Door Lock Key Cylinder Switch
2. Malfunction Of The ETACS-ECU
3. Damaged Harness Wires Or Connectors

Scheme 208

Scheme 209

Scheme 210

Scheme 211

Scheme 212

Scheme 213

Scheme 214

1. Check Which Door Lock Key Cylinder Switch Is Defective - Which door lock key cylinder switch does not send a signal to the ECU? Driver's door lock key cylinder: Go to next step. Front passenger's door lock key cylinder: Go to step 8.
2. Malfunction Of The Driver's Door Lock Key Cylinder Switch - Disconnect driver's door lock key cylinder switch connector E-14. Then check continuity between the switch terminals. (Scheme 208) Is the driver's door lock key cylinder switch in good condition? YES: Go to next step. If No, replace the driver's door lock key cylinder switch. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal.
3. Measure At Driver's Door Lock Key Cylinder Switch Connector E-14 In Order To Check The Ground Circuit To The Driver's Door Lock Key Cylinder Switch - Disconnect driver's door lock key cylinder switch connector E-14, and measure at the harness side. Measure the resistance value between terminal 2 and ground. (Scheme 209) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 6. NO: Go to next step.
4. Check Driver's Door Lock Key Cylinder Switch Connector E-14 For Damage - (Scheme 210) Is driver's door lock key cylinder switch connector E-14 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal.
5. Check The Wiring Harness Between Driver's Door Lock Key Cylinder Switch Connector E-14 And Ground - Also, check intermediate connector C-91. (Scheme 211) If intermediate connector C-91 is damaged, repair or replace the connector. Is the wiring harness between driver's door lock key cylinder switch connector E-14 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal.
6. Check Driver's Door Lock Key Cylinder Switch Connector E-14 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are driver's door lock key cylinder switch connector E- 14 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal.
7. Check The Wiring Harness Between Driver's Door Lock Key Cylinder Switch Connector E-14 And ETACS-ECU Connector C-117 - Also, check intermediate connector C-91. If intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between driver's door lock key cylinder switch connector E-14 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal. NO: Repair the wiring harness. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the driver's door lock key cylinder switch should be normal.
8. Check The Front Passenger's Door Lock Key Cylinder Switch - Disconnect front passenger's door lock key cylinder switch connector E-06. Then check continuity between the switch terminals. (Scheme 208) Is the front passenger's door lock key cylinder switch in good condition? YES: Go to next step. NO: Replace the front passenger's door lock key cylinder switch. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.
9. Measure At Front Passenger's Door Lock Key Cylinder Switch Connector E-06 In Order To Check The Ground Circuit To The Front Passenger's Door Lock Key Cylinder Switch - Disconnect front passenger's door lock key cylinder switch connector E-06, and measure at the harness side. (Scheme 212) Measure the resistance value between terminal 2 and ground. The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 12. NO: Go to next step.
10. Check Front Passenger's Door Lock Key Cylinder Switch Connector E-06 For Damage - (Scheme 213) Is front passenger's door lock key cylinder switch connector E-06 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.
11. Check The Wiring Harness Between Front Passenger's Door Lock Key Cylinder Switch Connector E-06 And Ground - Also check intermediate connector C-95. (Scheme 214) If intermediate connectors C-95 is damaged, repair or replace the connector. Is the wiring harness between front passenger's door lock key cylinder switch connector E-06 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.
12. Check Front Passenger's Door Lock Key Cylinder Switch Connector E-06 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are front passenger's door lock key cylinder switch connector E-06 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.
13. Check The Wiring Harness Between Front Passenger's Door Lock Key Cylinder Switch Connector E-06 And ETACS-ECU Connector C-117 - Also check intermediate connector C-95. If intermediate connectors C-95 is damaged, repair or replace the connector. Is the wiring harness between front passenger's door lock key cylinder switch connector E-06 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal. NO: Repair the wiring harness. If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S02033804172004111100000), work normally, the input signal from the front passenger's door lock key cylinder switch should be normal.

1. Malfunction Of The Driver's Or Front Passenger's Door Latch Assembly
2. Malfunction Of The ETACS-ECU
3. Damaged Harness Wires Or Connectors

Scheme 215

Scheme 216

Scheme 217

Scheme 218

Scheme 219

Scheme 220

1. Check Which Door Lock Key Cylinder Switch Is Defective - Which door lock actuator switch signal is not entered? Driver's door: Go to next step. Front passenger's door: Go to step 8.
2. Check The Driver's Door Lock Actuator Switch - Disconnect driver's door lock actuator switch connector E-13. Then check continuity between the switch terminals. (Scheme 215) Is the driver's door lock actuator switch in good condition? YES: Go to next step. NO: Replace the driver's door lock actuator switch. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal.
3. Measure At Driver's Door Lock Actuator Switch Connector E-13 In Order To Check The Ground Circuit To The Driver's Door Lock Actuator Switch - Disconnect driver's door lock actuator switch connector E-13, and measure at the harness side. (Scheme 216) Measure the resistance value between terminal 1 and ground. The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 6. NO: Go to next step.
4. Check Driver's Door Lock Actuator Switch Connector E-13 For Damage - (Scheme 217) Is driver's door lock actuator switch connector E-13 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal.
5. Check The Wiring Harness Between Driver's Door Lock Actuator Switch Connector E-13 And Ground - Also check intermediate connector C-91. (Scheme 211) If intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between driver's door lock actuator switch connector E-13 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal.
6. Check Driver's Door Lock Actuator Switch Connector E-13 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are driver's door lock actuator switch connector E-13 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal.
7. Check The Wiring Harness Between Driver's Door Lock Actuator Switch Connector E-13 And ETACS-ECU Connector C-117 - Also check intermediate connector C-91. If intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between driver's door lock actuator switch connector E-13 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the driver's door lock actuator switch should be normal.
8. Check The Front Passenger's Door Lock Actuator Switch - Disconnect front passenger's door lock actuator switch connector E-07. Then check continuity between the switch terminals. (Scheme 218) Is the front passenger's door lock actuator switch in good condition? YES: Go to next step. NO: Replace the front passenger's seat door lock actuator switch. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal.
9. Measure At Front Passenger's Door Lock Actuator Switch Connector E-07 In Order To Check The Ground Circuit To The Front Passenger's Door Lock Actuator Switch - Disconnect front passenger's door lock actuator switch connector E-07, and measure at the harness side. (Scheme 219) Measure the resistance value between terminal 3 and ground. The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 12. NO: Go to next step.
10. Check Front Passenger's Door Lock Actuator Switch Connector E-07 For Damage - (Scheme 220) Is front passenger's door lock actuator switch connector E-07 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal.
11. Check The Wiring Harness Between Front Passenger's Door Lock Actuator Switch Connector E-07 And Ground - Also check intermediate connector C-95. (Scheme 214) If intermediate connector C-95 is damaged, repair or replace the connector. Is the wiring harness between front passenger's door lock actuator switch connector E-07 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal.
12. Check Front Passenger's Door Lock Actuator Switch Connector E-07 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are front passenger's door lock actuator switch connector E-07 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal.
13. Check The Wiring Harness Between Front Passenger's Door Lock Actuator Switch Connector E-07 And ETACS-ECU Connector C-117 - Also check intermediate connector C-95. (Scheme 214) If intermediate connector C-95 is damaged, repair or replace the connector. Is the wiring harness between front passenger's door lock actuator switch connector E-07 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal. NO: Repair the wiring harness. If the functions, which are described in «CIRCUIT OPERATION»(ref-168713-S19499592092004111200000), work normally, the input signal from the front passenger's door lock actuator switch should be normal.

1. Malfunction of the power window main switch or power window sub switch (door lock switch)
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 221)

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

1. Check Which Door Lock Key Cylinder Switch Is Defective - Which door switch signal is not entered? Power window main switch (Driver's door): Go to Step 2. Power window sub switch (Front passenger's door): Go to Step 8.
2. Check The Door Lock Switch (Power Window Main Switch) - Remove the power window main switch. Then check continuity between the switch terminals as illustrated. (Scheme 222) Is the door lock switch (power window main switch) in good condition? YES: Go to Step 3. NO: Replace the power window main switch. If the central door locking system works normally, input signal from the door lock switch should be normal.
3. Check At Power Window Main Switch Connector E-12 In Order To Check The Power Window Main Switch Ground Circuit - Disconnect power window main switch connector E-12, and measure at the harness side. Measure the resistance value between terminal 9 and ground. (Scheme 223) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 6. NO: Go to Step 4.
4. Check Power Window Main Switch Connector E-12 For Damage - Is power window main switch connector E-12 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. If the central door locking system works normally, input signal from the door lock switch should be normal.
5. Check The Wiring Harness Between Power Window Main Switch E-12 And Ground - Also check intermediate connector C-91. If intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between power window main switch connector E-12 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the central door locking system works normally, input signal from the door lock switch should be normal.
6. Check Power Window Main Switch Connector E-12 And ETACS-ECU Connector C-117 For Damage - Are power window main switch connector E-12 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. If the central door locking system works normally, input signal from the door lock switch should be normal.
7. Check The Wiring Harness Between Power Window Main Switch Connector E-12 And ETACS-ECU Connector C-117 - Also check intermediate connector C-91. If intermediate connectors C-91 is damaged, repair or replace the connector. Is the wiring harness between power window main switch connector E-12 and ETACS-ECU connector C- 117 in good condition? YES: Replace the ETACS-ECU. If the central door locking system works normally, input signal from the door lock switch should be normal. NO: Repair the wiring harness. If the central door locking system works normally, input signal from the door lock switch should be normal.
8. Check The Door Lock Switch (Power Window Sub Switch) - Remove the power window sub switch. Then check continuity between the switch terminals as illustrated. (Scheme 224) Is the door lock switch (power window sub switch) in good condition? YES: Go to Step 9. NO: Replace the power window sub switch. If the central door locking system works normally, input signal from the door lock switch should be normal.
9. Measure At Power Window Sub Switch Connector E-05 In Order To Check The Ground Circuit To The Power Window Sub Switch - Disconnect power window sub switch connector E-05, and measure at the harness side. Measure the resistance value between terminal 2 and ground. (Scheme 225) The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to Step 12. NO: Go to Step 10.
10. Check Power Window Sub Switch Connector E-05 For Damage - Is power window sub switch connector E-05 in good condition? YES: Go to Step 11. NO: Repair or replace the connector. If the central door locking system works normally, input signal from the door lock switch should be normal.
11. Check The Wiring Harness Between Power Window Sub Switch E-05 And Ground - Also check intermediate connector C-95. If intermediate connectors C-95 is damaged, repair or replace the connector. Is the wiring harness between power window sub switch connector E-05 and ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the central door locking system works normally, input signal from the door lock switch should be normal.
12. Check Power Window Sub Switch Connector E-05 And ETACS-ECU Connector C-117 For Damage - Are power window sub switch connector E-05 and ETACS-ECU connector C-117 in good condition? YES: Go to Step 13. NO: Repair or replace the connector. If the central door locking system works normally, input signal from the door lock switch should be normal.
13. Check The Wiring Harness Between Power Window Sub Switch Connector E-05 And ETACS-ECU Connector C-117 - Also check intermediate connector C-95. If intermediate connectors C-95 is damaged, repair or replace the connector as described. Is the wiring harness between power window sub switch connector E-05 and ETACS-ECU connector C- 117 in good condition? YES: Replace the ETACS-ECU. If the central door locking system works normally, input signal from the door lock switch should be normal. NO: Repair the wiring harness. If the central door locking system works normally, input signal from the door lock switch should be normal.

1. Malfunction of the rear wiper motor
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 226)

Scheme 226

Scheme 227

Scheme 228

1. Check The Rear Wiper - Does the rear wiper motor operate (however, the rear wiper does not stop at the predetermined park position)? YES: Go to Step 2. NO: Refer to «INSPECTION PROCEDURE H-1: REAR WIPER AND WASHER: REAR WIPER DOES NO NOT WORK AT ALL»(ref-168713-S32988929592004113000000).
2. Check The Rear Wiper Motor - Disconnect rear wiper motor connector F-07. While the rear wiper motor is running, disconnect the battery to stop the motor. When the battery is connected as shown, the motor should run again and stop at the predetermined park position. (Scheme 227) Does the rear wiper motor operate normally? YES: Go to Step 3. NO: Replace the rear wiper motor. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.
3. Measure At Rear Wiper Motor Connector F-07 By Backprobing To Check The Ignition Switch (ACC) Line Of The Power Supply To The Rear Wiper Motor - Do not disconnect rear wiper motor connector F-07. Turn the ignition switch to the "ACC" position. Measure the voltage between terminal 1 and ground by backprobing. (Scheme 228) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 6. NO: Go to Step 4.
4. Check Rear Wiper Motor Connector F-07 For Damage - Is rear wiper motor connector F-07 in good condition? YES: Go to Step 5. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.
5. Check The Wiring Harness Between Rear Wiper Motor Connector F-07 And The Ignition Switch (ACC) - Also check intermediate connector F-24 and junction block connectors C-101 and C-111. If intermediate connector F- 24 or junction block connector C-101 or C-111 is damaged, repair or replace the connector. Is the wiring harness between rear wiper motor connector F-07 and the ignition switch (ACC) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.
6. Check Rear Wiper Motor Connector F-07 And ETACS-ECU Connector C-119 For Damage - Are rear wiper motor connector F-07 and ETACS-ECU connector C-119 in good condition? YES: Go to Step 7. NO: Repair or replace the connector. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.
7. Check The Wiring Harness Between Rear Wiper Motor Connector F-07 And ETACS-ECU Connector C-119 - Also check intermediate connector F-24 and junction block connector C-101. If intermediate connector F-24 or junction block connector C-101 is damaged, repair or replace the connector. Is the wiring harness between rear wiper motor connector F-07 and ETACS-ECU connector C-119 in good condition? YES: Replace the ETACS-ECU. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor. NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

1. Malfunction Of The Hood Switch
2. Malfunction Of The ETACS-ECU
3. Damaged Harness Wires Or Connectors

Scheme 229

Scheme 230

Scheme 231

1. Check The Hood Switch - Remove the hood switch. Then check continuity between the switch terminals. (Scheme 229) Is the hood switch in good condition? YES: Go to next step. NO: Replace the hood switch. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch.
2. Measure At Hood Switch Connector A-23 In Order To Check The Ground Circuit To The Hood Switch - Disconnect hood switch connector A-23, and measure at the wiring harness side. (Scheme 230) Measure the resistance value between terminal 1 and ground. The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 5. NO: Go to next step.
3. Check Hood Switch Connector A-23 For Damage - (Scheme 231) Is hood switch connector A-23 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch.
4. Check The Wiring Harness Between Hood Switch Connector A-23 And Ground - Is the wiring harness between hood switch connector A-23 and the ground in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch.
5. Check Hood Switch Connector A-23 And ETACS-ECU Connector C-117 For Damage - (Scheme 201) Are hood switch connector A-23 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace the connector. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch.
6. Check The Wiring Harness Between Hood Switch Connector A-23 And ETACS-ECU Connector C-117 - Also check intermediate connector C-89. (Scheme 174) If intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between hood switch connector A-23 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch. NO: Repair the wiring harness. If the theft-alarm system operates normally, it indicates that a correct signal is sent from the hood switch.

1. Malfunction Of The Liftgate Latch
2. Malfunction Of The Trunk Lid Latch
3. Malfunction Of The ETACS-ECU
4. Damaged Harness Wires Or Connectors

Scheme 232

Scheme 233

Scheme 234

Scheme 235

Scheme 236

1. Check Liftgate Latch Switch Or Trunk Lid Latch Switch - (Scheme 232)or (Scheme 233). Is liftgate latch switch or trunk lid latch switch in good condition? YES: Vehicles with theft-alarm system: Go to next step; Vehicles without theft-alarm system: Go to step 5. NO: Replace the liftgate latch switch or trunk lid latch switch. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally.
2. Check Ground Circuit At Liftgate Latch Switch Or Trunk Lid Latch Switch Connector F-16 - Disconnect liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 and measure at the harness side. (Scheme 234) Measure the resistance between terminal 2 and ground. The measured value should be 2 ohm or less. Does the measured resistance value correspond with this range? YES: Go to step 5. NO: Go to next step.
3. Check Liftgate Latch Switch Connector F-16 Or Trunk Lid Latch Switch Connector F-16 For Damage - (Scheme 235) Is connector F-16 in good condition? YES: Go to next step. NO: Repair or replace it. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally.
4. Check The Harness Wire Between Connector F-16 And Ground - Is the harness wire between liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 and ground in good condition? YES: There is no action to be taken. NO: Repair it. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally.
5. Check Liftgate Latch Switch Connector F-16, Liftgate Light Switch Connector F-13, Trunk Lid Latch Switch Connector F-16 Or Trunk Light Switch Connector F-13 And ETACS-ECU Connector C-118 Or C-117 For Damage - (Scheme 4) Are liftgate latch switch connector F-16, liftgate light switch connector F-13, trunk lid latch switch connector F-16 or trunk light switch connector F-13 and ETACS-ECU connector C-118 or C-117 in good condition? YES: Go to next step. NO: Repair or replace them. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally.
6. Check The Harness Wires Between Liftgate Latch Switch Connector F-16, Liftgate Light Switch Connector F-13, Trunk Lid Latch Switch Connector F-16 Or Trunk Light Switch Connector F-13 And ETACS-ECU Connector C-118 Or C-117 - Also, check intermediate connector C-90. (Scheme 236) If intermediate connector C-90 is damaged, repair or replace it. Are the harness wires between liftgate latch switch connector F-16, liftgate light switch connector F-13, trunk lid latch switch connector F-16 or trunk light switch connector F-13 and ETACS-ECU connector C-118 or C-117 in good condition? YES: Replace the ETACS-ECU. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally. NO: Repair them. The input signal from the liftgate latch switch or trunk lid latch switch should be able to be checked and the functions, which are described in «TECHNICAL DESCRIPTION (COMMENT)»(ref-168713-S17462046392004111500000), should work normally.

1. Malfunction Of The Liftgate Lock Key Cylinder Switch
2. Malfunction Of The Trunk Lid Lock Key Cylinder Switch
3. Malfunction Of The ETACS-ECU
4. Damaged Harness Wires Or Connectors

Scheme 237

Scheme 238

Scheme 239

1. Check The Liftgate Lock Key Cylinder Switch Or The Trunk Lid Lock Key Cylinder Switch - (Scheme 237) Is the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch in good condition? YES: Go to next step. NO: Replace the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate or trunk lid lock key cylinder switch.
2. Check Ground Circuit At Liftgate Or Trunk Lid Lock Key Cylinder Switch Connector F-10 - Disconnect liftgate lock key cylinder switch or trunk lid lock key cylinder switch connector F-10 and measure at the harness side. (Scheme 238) Measure the resistance between terminal 2 and ground. The measured value should be 2 ohms or less. Does the measured resistance value correspond with this range? YES: Go to step 5. NO: Go to next step.
3. Check Liftgate Or Trunk Lid Lock Key Cylinder Switch Connector F-10 For Damage - (Scheme 239) Is connector F-10 in good condition? YES: Go to next step. NO: Repair or replace it. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch.
4. Check The Harness Wire Between Liftgate Or Trunk Lid Lock Key Cylinder Switch Connector F-10 And Ground - Is the harness wire between the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch connector F-10 and ground in good condition? YES: There is no action to be taken. NO: Repair it. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch.
5. Check Liftgate Or Trunk Lid Lock Key Cylinder Switch Connector F-10 And ETACS-ECU Connector C-117 For Damage - (Scheme 168) Are connector F-10 and ETACS-ECU connector C-117 in good condition? YES: Go to next step. NO: Repair or replace them. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate lock key cylinder switch or the trunk lid lock key cylinder switch.
6. Check The Harness Wires Between Liftgate Or Trunk Lid Lock Key Cylinder Switch Connector F-10 And ETACS-ECU Connector C-117 - Also, check intermediate connector C-90. (Scheme 236) If intermediate connector C-90 is damaged, repair or replace it. Are the harness wires between liftgate or trunk lid lock key cylinder switch connector F-10 and ETACS-ECU connector C-117 in good condition? YES: Replace the ETACS-ECU. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate or trunk lid lock key cylinder switch. NO: Repair them. When the theft-alarm system operates normally, check that the signal is input normally from the liftgate or trunk lid lock key cylinder switch.

1. Malfunction of the vehicle speed sensor
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 240)

Scheme 240

1. Check That The Combination Meter (Speedometer) Works Normally - Does the combination meter (speedometer) work normally? YES : Go to Step 2. NO : Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000) .
2. Check ETACS-ECU Connector C-118 And Vehicle Speed Sensor Connector B-39 For Damage - Are ETACS-ECU connector C-118 and vehicles speed sensor connector B-39 in good condition? YES : Go to Step 3. NO : Repair or replace the connector. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.
3. Check The Wiring Harness Between ETACS-ECU Connector C-118 And Vehicle Speed Sensor Connector B- 39 - Also check intermediate connectors B-36 and C-28 and joint connector C-77. If intermediate connectors B-36 and C-28 or joint connector C-77 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 118 and vehicle speed sensor connector B-39 in good condition? YES : Replace the ETACS-ECU. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU. NO : Repair the wiring harness. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

1. Malfunction of the powertrain control module
2. Malfunction of the ETACS-ECU
3. Damaged harness wires or connectors

Note. For connector locations (Scheme 241)

Scheme 241

1. Check That The Combination Meter (Speedometer) Works Normally - Does the combination meter (speedometer) work normally? YES : Go to Step 2. NO : Refer to «INSPECTION PROCEDURE O-8: COLUMN SWITCH: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM WINDSHIELD MIST WIPER SWITCH, WINDSHIELD INTERMITTENT WIPER SWITCH, WINDSHIELD LOW-SPEED WIPER SWITCH, WINDSHIELD HIGH-SPEED WIPER SWITCH OR WINDSHIELD WASHER SWITCH»(ref-168713-S24779346372004111800000) .
2. Check ETACS-ECU Connector C-118 And Powertrain Control Module Connector C-57 Or C-59 For Damage - Are ETACS-ECU connector C-118 and powertrain control module connector C-57 (2.4 L ENGINE) or C-59 (3.0 L ENGINE) in good condition? YES : Go to Step 3. NO : Repair or replace the connector. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.
3. Check The Wiring Harness Between ETACS-ECU Connector C-118 And Powertrain Control Module Connector C-57 Or C-59 - Also check intermediate connector C-28 and joint connector C-77. If intermediate connector C-28 or joint connector C-77 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 118 and powertrain control module connector C-57 (2.4 L ENGINE) or C-59 (3.0 L ENGINE) in good condition? YES : Replace the ETACS-ECU. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU. NO : Repair the wiring harness. If the wiper interval can be adjusted normally, it indicates that the windshield intermittent wiper interval adjusting knob should send a signal to the ECU.

1. Malfunction Of The Transmitter
2. Malfunction Of The ETACS-ECU

Scheme 242

1. Register Transmitter - Register transmitter. See «PROGRAMMING»(ref-155838-S05314560472004111600000) in ANTI-THEFT SYSTEMS article. Can the transmitter be registered correctly? YES: If the systems, which are described in «CIRCUIT OPERATION»(ref-168713-S39365982242004111600000), work normally, the input signal from the transmitter should be normal. NO: Go to next step.
2. Check transmitter battery. (Scheme 242) Does measured voltage correspond with range? YES: Systems, which are described in «CIRCUIT OPERATION»(ref-168713-S39365982242004111600000), work normally, input signal from transmitter should be normal. If No, ETACS-ECU. If system described in «CIRCUIT OPERATION»(ref-168713-S39365982242004111600000), work normally, input signal from transmitter should be normal.

1. Malfunction of the ETACS-ECU
2. Damaged harness wires or connectors

Note. For connector locations (Scheme 243)

Scheme 243

Scheme 244

Scheme 245

Scheme 246

Scheme 247

1. Measure At ETACS-ECU Connector C-119 In Order To Check The Battery Line Of Power Supply System To ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Measure the voltage between terminal 20 and ground. (Scheme 244) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 4. NO: Go to Step 2.
2. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 3. NO: Repair or replace the connector. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
3. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Battery - Also check junction block connector C-112 and joint connector C-78 and intermediate connector C-89. If junction block connector C-112 or joint connector C-78 or intermediate connector C-89 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the battery in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
4. Measure At ETACS-ECU Connector C-119 In Order To Check The Ignition Switch (IG1) Line Of The Power Supply To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 8 and ground. (Scheme 245) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 7. NO: Go to Step 5.
5. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 6. NO: Repair or replace the connector. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
6. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ignition Switch (IG1) - Also check junction block connector C-111. If junction block connector C-111 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and the ignition switch (IG1) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
7. Measure At ETACS-ECU Connector C-119 In Order To Check The Ignition Switch (ACC) Line Of The Power Supply To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Turn the ignition switch to the "ACC" position. Measure the voltage between terminal 4 and ground. (Scheme 246) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Go to Step 10. NO: Go to Step 8.
8. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 9. NO: Repair or replace the connector. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
9. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ignition Switch (ACC) - Also check junction block connector C-112 and intermediate connector C-89. If junction block connector C-112 or intermediate C-89 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and ignition switch (ACC) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
10. Measure At ETACS-ECU Connector C-119 In Order To Check The Ignition Switch (ACC) Line Of The Power Supply To The ETACS-ECU - Disconnect ETACS-ECU connector C-119, and measure at the junction block side. Turn the ignition switch to the "ACC" position. Measure the voltage between terminal 18 and ground. (Scheme 247) The measured value should be approximately 12 volts (battery positive voltage). Does the measured voltage correspond with this range? YES: Replace the ETACS-ECU. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal. NO: Go to Step 11.
11. Check ETACS-ECU Connector C-119 For Damage - Is ETACS-ECU connector C-119 in good condition? YES: Go to Step 12. NO: Repair or replace the connector. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.
12. Check The Wiring Harness Between ETACS-ECU Connector C-119 And The Ignition Switch (ACC) - Also check junction block connector C-111. If junction block connector C-111 is damaged, repair or replace the connector. Is the wiring harness between ETACS-ECU connector C- 119 and ignition switch (ACC) in good condition? YES: No action to be taken. NO: Repair the wiring harness. If the functions or equipment, which are described in «CIRCUIT OPERATION»(ref-168713-S07521637842004120900000), work normally, the interior light loaded signal should be normal.