Lighting (Diagnostics): Overview Scion xD I

SYSTEM DESCRIPTION

1. ILLUMINATION CONTROL SYSTEM (Illuminated entry system): The illuminated entry system provides convenience when getting in or out of the vehicle at night. This system controls the room light. This function is controlled by the main body ECU. The operation and condition of this control are described below. Operation Condition Fade in When any of the following conditions is met, the room light fades in. Any door is opened. Any door is unlocked when the ignition switch is OFF and all doors are closed. Ignition switch is turned from ON to OFF when all doors are closed. Fade out immediately When either of the following conditions is met, the room light fades out. Ignition switch is turned from OFF to ON when all doors are closed. All doors are locked when the ignition switch is OFF. Illuminate for approximately 15 seconds, and then fade out All doors are closed when the ignition switch is off. Fade out (Battery saving control) When all of the following conditions have been met, the main body ECU turns off the lights. A key is not inserted in the ignition key cylinder. There is no change in the condition of the doors for 20 minutes. When any of the following conditions is met, the count of the battery save times will be cleared. A key is inserted in the ignition key cylinder. Any of the doors is opened.

DESCRIPTION

The headlights are illuminated when the light control switch, located on the headlight dimmer switch, is turned to the HEAD position.

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1. CHECK VEHICLE CONDITION Check whether the headlights come on. Result Result Proceed to Headlights do not come on A High-beam headlights do not come on B B --> See step 12 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (HEADLIGHT RELAY) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the tester on. Enter the following menus: Body Electrical / Main Body / Active Test / Headlight Relay. Check the headlight (Low-beam) while operating the headlight relay using the tester. MAIN BODY (MAIN BODY ECU) Tester Display Test Part Control Range Normal Condition Headlight Relay Headlight Relay ON / OFF - OK The headlight (Low-beam) comes on when operating it through the Techstream. NG --> See step 5 OK: Go to next step
3. INSPECT HEADLIGHT DIMMER SWITCH Remove the headlight dimmer switch assembly. Refer to «REMOVAL»(ref-388749-S17791072682011031100000) . Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 8 (HL) - 11 (ED) Light control switch OFF 10 kohms or higher 8 (HL) - 11 (ED) Light control switch head position Below 1 ohms Reinstall the headlight dimmer switch assembly. NG --> See step 17 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (H-LP/AMT RELAY - HEADLIGHT DIMMER SWITCH) Disconnect the F6 headlight dimmer switch connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition F6-8 (HL) - Body ground Always 11 to 14 V Reconnect the headlight dimmer switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT DIMMER SWITCH - BODY GROUND)
5. INSPECT FUSES (H-LP LH/H-LP LO LH, H-LP RH/H-LP LO RH) Remove the H-LP LH/H-LP LO LH and H-LP RH/H-LP LO RH fuses from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition H-LP LH/H-LP LO LH fuse Always Below 1 ohms H-LP RH/H-LP LO RH fuse Always Below 1 ohms Reinstall the H-LP LH/H-LP LH LO and H-LP RH/H-LP RH LO fuses. NG --> See step 15 OK: Go to next step
6. REPLACE BULB Temporarily replace the headlight bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 1»(ref-388749-S40438924342011031100000) . NEXT: Go to next step
7. CHECK HEADLIGHT BULB Check that the headlight (low-beam) come on. OK Headlight (low-beam) come on. NG --> See step 8 OK --> See step 18
8. CHECK HARNESS AND CONNECTOR (BATTERY - HEADLIGHT) Disconnect the B3 and B6 headlight connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition B3-3 - Body ground Always 11 to 14 V B6-3 - Body ground Always 11 to 14 V Reconnect the headlight connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. INSPECT RELAY (H-LP/AMT) Remove the H-LP/AMT relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 3 - 5 Voltage is not applied between terminals 1 and 2 10 kohms or higher 3 - 5 Apply the battery voltage between terminals 1 and 2 Below 1 ohms Reinstall the H-LP/AMT relay. NG --> See step 16 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (H-LP/AMT RELAY - HEADLIGHT, H-LP LH/H-LP LH LO FUSE) Remove the H-LP/AMT relay from the No. 2 engine room relay block. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition H-LP/AMT relay terminal 1 - Body ground Always 11 to 14 V H-LP/AMT relay terminal 5 - Body ground Always 11 to 14 V Reinstall the H-LP/AMT relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (H-LP/AMT RELAY - BODY GROUND) Remove the H-LP/AMT relay from the No. 2 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition H-LP/AMT relay terminal 3 - Body ground Always Below 1 ohms Reinstall the H-LP/AMT relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (H-LP/AMT RELAY - HEADLIGHT DIMMER SWITCH)
12. REPLACE BULB Temporarily replace the headlight bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 1»(ref-388749-S40438924342011031100000) . NEXT: Go to next step
13. CHECK HEADLIGHT BULB Check that the headlight (high-beam) come on. OK Headlight (high-beam) come on. NG --> See step 14 OK --> See step 18
14. INSPECT HEADLIGHT DIMMER SWITCH Remove the headlight dimmer switch assembly. Refer to «REMOVAL»(ref-388749-S17791072682011031100000) . Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 9 (HU) - 11 (ED) Headlight dimmer switch flash Below 1 ohms 9 (HU) - 11 (ED) Headlight dimmer switch high Below 1 ohms Reinstall the headlight dimmer switch assembly. NG --> See step 17 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT - HEADLIGHT DIMMER SWITCH)
15. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
16. REPLACE RELAY. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
17. REPLACE HEADLIGHT DIMMER SWITCH. Refer to «REMOVAL»(ref-388749-S17791072682011031100000)
18. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 1»(ref-388749-S40438924342011031100000)

The turn signal flasher assembly in the main body ECU turns on when it receives signals from the headlight dimmer switch integrated with the turn signal switch, causing the turn signal lights to flash.

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1. CHECK OPERATION OF TURN SIGNAL LIGHT When the turn signal light switch is operated, check that the appropriate turn signal light flashes. Result Result Proceed to No lights flash A Front turn signal light (LH or RH) does not flash B Side turn signal light (LH or RH) does not flash C Rear turn signal light (LH or RH) does not flash D D --> See step 19 C --> See step 14 B --> See step 8 A: Go to next step
2. INSPECT FUSES (GAUGE, HAZ) Remove the GAUGE fuse from the main body ECU. Remove the HAZ fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition GAUGE fuse Always Below 1 ohms HAZ fuse Always Below 1 ohms Reinstall the GAUGE and HAZ fuses. NG --> See step 25 OK: Go to next step
3. INSPECT HEADLIGHT DIMMER SWITCH Remove the headlight dimmer switch. Refer to «REMOVAL»(ref-388749-S17791072682011031100000) . Inspect the turn signal light switch. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 6 (TR) - 7 (EL) Right Below 1 ohms 6 (TR) - 7 (EL) Neutral 10 kohms or higher 5 (TL) - 7 (EL) Left Below 1 ohms 5 (TL) - 7 (EL) Neutral 10 kohms or higher Reinstall the headlight dimmer switch. NG --> See step 29 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU) Disconnect the F6 headlight dimmer switch connector. Disconnect the 4E and 4S main body ECU connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F6-5 (TL) - 4S-11 Always Below 1 ohms F6-6 (TR) - 4S-12 Always Below 1 ohms F6-7 (EL) - 4E-28 Always Below 1 ohms F6-5 (TL) or 4S-11 - Body ground Always 10 kohms or higher F6-6 (TR) or 4S-12 - Body ground Always 10 kohms or higher F6-7 (EL) or 4E-28 - Body ground Always 10 kohms or higher Reconnect the headlight dimmer switch connector. Reconnect the main body ECU connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (HAZ FUSE - MAIN BODY ECU) Disconnect the 4B main body ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition 4B-32 - Body ground Always 11 to 14 V Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND) Disconnect the 4E main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4E-17 - Body ground Always Below 1 ohms Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. INSPECT MAIN BODY ECU Remove the main body ECU. Remove the turn signal flasher assembly from the main body ECU. Remove the IG1 relay from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4B-32 - Turn signal flasher assembly terminal 4 (+B) Always Below 1 ohms 4E-17 - 4E-28 - Turn signal flasher assembly terminal 7 (GND) Always Below 1 ohms 4S-11 - Turn signal flasher assembly terminal 5 (EL) Always Below 1 ohms 4S-12 - Turn signal flasher assembly terminal 6 (ER) Always Below 1 ohms IG1 relay terminal 3- Turn signal flasher assembly terminal 1 (IG) Always Below 1 ohms Reinstall the IG1 relay. Reinstall the turn signal flasher assembly. Reinstall the main body ECU. NG --> REPLACE MAIN BODY ECU OK --> See step 30
8. REPLACE BULB (FRONT TURN SIGNAL BULB) Temporarily replace the front turn signal light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 3»(ref-388749-S40438924342011031100000) . NEXT: Go to next step
9. CHECK FRONT TURN SIGNAL LIGHT BULB Check that the front turn signal light comes on. OK Front turn signal light comes on. NG --> See step 10 OK --> See step 26
10. INSPECT HEADLIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the B1 and B7 headlight assembly connectors. Measure the voltage according to the value (s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition B1-1 - Body ground Turn signal (right turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) B7-1 - Body ground Turn signal (left turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) Reconnect the headlight connectors. NG --> See step 12 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - BODY GROUND) Disconnect the B1 and B7 headlight assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition B1-3 - Body ground Always Below 1 ohms B7-3 - Body ground Always Below 1 ohms Reconnect the headlight assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 32
12. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HEADLIGHT ASSEMBLY) Disconnect the B1 and B7 headlight assembly connectors. Disconnect the 4B main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition B1-1 - 4B-31 Always Below 1 ohms B7-1 - 4B-14 Always Below 1 ohms B1-1 or 4B-31 - Body ground Always 10 kohms or higher B7-1 or 4B-14 - Body ground Always 10 kohms or higher Reconnect the main body ECU connector. Reconnect the headlight assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
13. INSPECT MAIN BODY ECU Remove the main body ECU. Remove the turn signal flasher assembly from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4B-14 - Turn signal flasher assembly terminal 3 (LL) Always Below 1 ohms 4B-31 - Turn signal flasher assembly terminal 2 (LR) Always Below 1 ohms Reinstall the turn signal flasher assembly. Reinstall the main body ECU. NG --> REPLACE MAIN BODY ECU OK --> See step 30
14. INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY Remove the side turn signal light assembly from the outer rear view mirror assembly. Refer to «REMOVAL»(ref-388749-S05790663002011031100000) . Apply battery voltage to the terminals and check that the side turn signal light comes on. OK Measurement Condition Specified Condition Positive battery - Terminal 1 Negative battery - Terminal 2 Side turn signal light comes on Reinstall the side turn signal light assembly. NG --> See step 27 OK: Go to next step
15. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (SYSTEM VOLTAGE) Disconnect the I2 and J2 outer rear view mirror assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition I2-1 - Body ground Turn signal (right turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) J2-1 - Body ground Turn signal (left turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) Reconnect the outer rear view mirror assembly connectors. NG --> See step 17 OK: Go to next step
16. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - BODY GROUND) Disconnect the I2 and J2 outer rear view mirror assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition I2-2 - Body ground Always Below 1 ohms J2-2 - Body ground Always Below 1 ohms Reconnect the outer rear view mirror assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 31
17. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - MAIN BODY ECU) Disconnect the I2 and J2 outer rear view mirror assembly connectors. Disconnect the 4S main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition I2-1 - 4S-16 Always Below 1 ohms J2-1 - 4S-13 Always Below 1 ohms I2-1 or 4S-16 - Body ground Always 10 kohms or higher J2-1 or 4S-13 - Body ground Always 10 kohms or higher Reconnect the outer rear view mirror assembly connectors. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
18. INSPECT MAIN BODY ECU Remove the main body ECU. Remove the turn signal flasher assembly from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4S-13 - Turn signal flasher assembly terminal 3 (LL) Always Below 1 ohms 4S-16 - Turn signal flasher assembly terminal 2 (LR) Always Below 1 ohms Reinstall the turn signal flasher assembly. Reinstall the main body ECU. NG --> REPLACE MAIN BODY ECU OK --> See step 30
19. REPLACE BULB (REAR TURN SIGNAL LIGHT BULB) Temporarily replace the rear turn signal light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 3»(ref-388749-S16179048892011031100000) . NEXT: Go to next step
20. CHECK REAR TURN SIGNAL LIGHT BULB Check that the rear turn signal light comes on. OK Rear turn signal light comes on. NG --> See step 21 OK --> See step 28
21. INSPECT REAR COMBINATION LIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition L5-4 - Body ground Turn signal (right turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) L6-4 - Body ground Turn signal (left turn) OFF --> ON Below 1 V --> 11 to 14 V (60 to 120 times per minute) Reconnect the rear combination light assembly connectors. NG --> See step 23 OK: Go to next step
22. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT - BODY GROUND) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition L5-1 - Body ground Always Below 1 ohms L6-1 - Body ground Always Below 1 ohms Reconnect the rear combination light assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 33
23. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR TURN SIGNAL LIGHT BULB) Disconnect the L5 and L6 rear combination light assembly connectors. Disconnect the 4A main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition L5-4 - 4A-28 Always Below 1 ohms L6-4 - 4A-27 Always Below 1 ohms L5-4 or 4A-28 - Body ground Always 10 kohms or higher L6-4 or 4A-27 - Body ground Always 10 kohms or higher Reconnect the rear combination light assembly connectors. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
24. INSPECT MAIN BODY ECU Remove the main body ECU. Remove the turn signal flasher assembly from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4A-27 - Turn signal flasher assembly terminal 3 (LL) Always Below 1 ohms 4A-28 - Turn signal flasher assembly terminal 2 (LR) Always Below 1 ohms Reinstall the turn signal flasher assembly. Reinstall the main body ECU. NG --> REPLACE MAIN BODY ECU OK --> See step 30
25. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
26. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 3»(ref-388749-S40438924342011031100000)
27. REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S05790663002011031100000)
28. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 3»(ref-388749-S16179048892011031100000)
29. REPLACE HEADLIGHT DIMMER SWITCH. Refer to «REMOVAL»(ref-388749-S17791072682011031100000)
30. REPLACE TURN SIGNAL FLASHER ASSEMBLY. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
31. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY. Refer to «REMOVAL»(ref-388805-S08270768392011031100000)
32. REPAIR OR REPLACE No. 2 LIGHT WIRE. Refer to «DISASSEMBLY - Step 5»(ref-388749-S40438924342011031100000)
33. REPLACE REAR COMBINATION LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S39486944322011031100000)

When the hazard warning signal switch is turned on, the turn signal flasher assembly in the main body ECU turns on to flash the hazard warning signal lights.

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1. PERFORM ACTIVE TEST USING TECHSTREAM (HAZARD) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the tester on. Enter the following menus: Body Electrical / Main Body / Active Test / Hazard. Check the hazard warning signal light while operating the hazard function using the tester. MAIN BODY (MAIN BODY ECU) Tester Display Test Part Control Range Normal Condition Hazard Turn Signal Flasher Assembly ON / OFF - OK The hazard warning signal light is flash when operating it through the Techstream. NG --> See step 4 OK: Go to next step
2. INSPECT TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) Remove the telltale light assembly. Refer to «REMOVAL»(ref-388749-S12132077572011031100000) . Inspect hazard warning signal switch. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 10 - 12 OFF 10 kohms or higher 10 - 12 ON Below 1 ohms Reinstall the telltale light assembly. NG --> See step 9 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH - MAIN BODY ECU, BODY GROUND) Disconnect the F17 telltale light assembly connector. Disconnect the 4S main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F17-10 - 4S-17 Always Below 1 ohms F17-10 or 4S-17 - Body ground Always 10 kohms or higher F17-12 - Body ground Always Below 1 ohms Reconnect the telltale light assembly connector. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
4. INSPECT FUSE (HAZ) Remove the HAZ fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition HAZ fuse Always Below 1 ohms Reinstall the HAZ fuse. NG --> See step 8 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (HAZ FUSE - MAIN BODY ECU) Disconnect the 4B main body ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition 4B-32 - Body ground Always 11 to 14 V Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND) Disconnect the 4E main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4E-17 - Body ground Always Below 1 ohms Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. INSPECT MAIN BODY ECU Remove the main body ECU. Remove the turn signal flasher assembly from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4B-32 - Turn signal flasher assembly terminal 4 (+B) Always Below 1 ohms 4E-17 - Turn signal flasher assembly terminal 7 (GND) Always Below 1 ohms 4S-17 - Turn signal flasher assembly terminal 8 (EHW) Always Below 1 ohms Reinstall the turn signal flasher assembly. Reinstall the main body ECU. NG --> REPLACE MAIN BODY ECU OK --> See step 10
8. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
9. REPLACE TELLTALE LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S12132077572011031100000)
10. REPLACE TURN SIGNAL FLASHER ASSEMBLY. Refer to «REMOVAL»(ref-388749-S35822252102011031100000)

When the light control switch, located on the headlight dimmer switch, is turned to the TAIL position, the front clearance lights, front side marker lights, rear taillights and license plate light come on.

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1. CHECK WHETHER LIGHTS ILLUMINATE Check whether the following lights come on: Front clearance lights, front side marker lights, rear taillights and license plate light. Result Result Proceed To No lights come on A Front clearance lights do not come on B Front side marker lights do not come on C Rear taillights do not come on D License plate lights do not come on E E --> See step 22 D --> See step 17 C --> See step 12 B --> See step 7 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (TAILLIGHT RELAY) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the tester on. Enter the following menus: Body Electrical / Main Body / Active Test / Taillight Relay. Check the taillights while operating the taillight relay using the tester. MAIN BODY (MAIN BODY ECU) Tester Display Test Part Control Range Normal Condition Taillight Relay Taillight Relay ON / OFF - OK The taillights come on when operated through the Techstream. NG --> See step 5 OK: Go to next step
3. INSPECT HEADLIGHT DIMMER SWITCH (LIGHT CONTROL SWITCH) Remove the headlight dimmer switch assembly. Refer to «REMOVAL»(ref-388749-S17791072682011031100000) . Inspect the light control switch. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 13 (B1) - 10 (T1) OFF 10 kohms or higher 13 (B1) - 10 (T1) TAIL Below 1 ohms 13 (B1) - 10 (T1) HEAD Below 1 ohms Reinstall the headlight dimmer switch. NG --> See step 28 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU, BODY GROUND) Disconnect the F6 headlight dimmer switch connector. Disconnect the 4S main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F6-13 (B1) - 4S-9 Always Below 1 ohms F6-10 (T1) - Body ground Always Below 1 ohms Reconnect the main body ECU connector. Reconnect the headlight dimmer switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
5. INSPECT FUSE (TAIL) Remove the TAIL fuse from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition TAIL fuse Always Below 1 ohms Reinstall the TAIL fuse. NG --> See step 27 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU) Disconnect the 4G main body ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition 4G-1 - Body ground Always 11 to 14 V Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
7. REPLACE BULB (FRONT CLEARANCE LIGHT BULB) Temporarily replace the front clearance light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 4»(ref-388749-S40438924342011031100000) . NEXT: Go to next step
8. CHECK FRONT CLEARANCE LIGHT BULB Check that the front clearance light comes on. OK Front clearance light comes on. NG --> See step 9 OK --> See step 29
9. INSPECT HEADLIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the B1 and B7 headlight assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition B1-4 - Body ground Light control switch Tail or Head 11 to 14 V B7-4 - Body ground Light control switch Tail or Head 11 to 14 V Reconnect the headlight assembly connectors. NG --> See step 11 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - BODY GROUND) Disconnect the B1 and B7 headlight assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition B1-3 - Body ground Always Below 1 ohms B7-3 - Body ground Always Below 1 ohms Reconnect the headlight assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 33
11. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - MAIN BODY ECU) Disconnect the B1 and B7 headlight assembly connectors. Disconnect the 4B main body ECU connector. Measure the resistance according to the value(s) in the table below . Standard resistance Tester Connection Condition Specified Condition 4B-33 - B1-4 Always Below 1 ohms 4B-33 - B7-4 Always Below 1 ohms 4B-33 or B1-4 - Body ground Always 10 kohms or higher 4B-33 or B7-4 - Body ground Always 10 kohms or higher Reconnect the headlight assembly connectors. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
12. REPLACE BULB (FRONT SIDE MARKER LIGHT) Temporarily replace the front side marker light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 2»(ref-388749-S40438924342011031100000) . NEXT: Go to next step
13. CHECK FRONT SIDE MARKER LIGHT BULB Check that the front side marker light comes on. OK Front side marker light comes on. NG --> See step 14 OK --> See step 30
14. INSPECT HEADLIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the B1 and B7 headlight assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition B1-6 - Body ground Light control switch Tail or Head 11 to 14 V B7-6 - Body ground Light control switch Tail or Head 11 to 14 V Reconnect the headlight assembly connectors. NG --> See step 16 OK: Go to next step
15. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - BODY GROUND) Disconnect the B1 and B7 headlight assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition B1-3 - Body ground Always Below 1 ohms B7-3 - Body ground Always Below 1 ohms Reconnect the headlight assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 33
16. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - MAIN BODY ECU) Disconnect the B1 and B7 headlight assembly connectors. Disconnect the 4B main body ECU connector. Measure the resistance according to the value(s) in the table below . Standard resistance Tester Connection Condition Specified Condition 4B-33 - B1-6 Always Below 1 ohms 4B-33 - B7-6 Always Below 1 ohms 4B-33 or B1-6 - Body ground Always 10 kohms or higher 4B-33 or B7-6 - Body ground Always 10 kohms or higher Reconnect the headlight assembly connectors. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
17. REPLACE BULB (TAILLIGHT BULB) Temporarily replace the taillight bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 2»(ref-388749-S16179048892011031100000) . NEXT: Go to next step
18. CHECK TAILLIGHT BULB Check that the taillight comes on. OK Taillight comes on. NG --> See step 19 OK --> See step 31
19. INSPECT REAR COMBINATION LIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition L5-3 - Body ground Light control switch Tail or Head 11 to 14 V L6-3 - Body ground Light control switch Tail or Head 11 to 14 V Reconnect the rear combination light connectors. NG --> See step 21 OK: Go to next step
20. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY - BODY GROUND) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition L5-1 - Body ground Always Below 1 ohms L6-1 - Body ground Always Below 1 ohms Reconnect the rear combination light connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 34
21. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - MAIN BODY ECU) Disconnect the L5 and L6 rear combination light assembly connectors. Disconnect the 4A main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4A-10 - L5-3 Always Below 1 ohms 4A-29 - L6-3 Always Below 1 ohms 4A-10 or L5-3 - Body ground Always 10 kohms or higher 4A-29 or L6-3 - Body ground Always 10 kohms or higher Reconnect the rear combination light assembly connectors. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
22. REPLACE BULB (LICENSE PLATE LIGHT BULB) Temporarily replace the license plate light bulb with a new or normally functioning one. Refer to «REMOVAL - Step 8»(ref-388749-S03984031462011031100000) . NEXT: Go to next step
23. CHECK LICENSE PLATE LIGHT BULB Check that the license plate light comes on. OK License plate light comes on. NG --> See step 24 OK --> See step 32
24. INSPECT LICENSE PLATE LIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the O6 and O7 license plate light assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition O6-1 - Body ground Light control switch Tail or Head 11 to 14 V O7-1 - Body ground Light control switch Tail or Head 11 to 14 V Reconnect the license plate light connectors. NG --> See step 26 OK: Go to next step
25. CHECK HARNESS AND CONNECTOR (LICENSE PLATE LIGHT - BODY GROUND) Disconnect the O6 and O7 license plate light assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition O6-2 - Body ground Always Below 1 ohms O7-2 - Body ground Always Below 1 ohms Reconnect the license plate light connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 35
26. CHECK HARNESS AND CONNECTOR (LICENSE PLATE LIGHT - MAIN BODY ECU, BODY GROUND) Disconnect the O6 and O7 license plate light assembly connectors. Disconnect the 4A main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 4A-29 - O6-1 Always Below 1 ohms 4A-29 - O7-1 Always Below 1 ohms 4A-29 or O6-1 - Body ground Always 10 kohms or higher 4A-29 or O7-1 - Body ground Always 10 kohms or higher Reconnect the license plate light assembly connector. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
27. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
28. REPLACE HEADLIGHT DIMMER SWITCH. Refer to «REMOVAL»(ref-388749-S17791072682011031100000)
29. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 4»(ref-388749-S40438924342011031100000)
30. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 2»(ref-388749-S40438924342011031100000)
31. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 2»(ref-388749-S16179048892011031100000)
32. END (REPLACE BULB). Refer to «REMOVAL - Step 8»(ref-388749-S03984031462011031100000)
33. REPAIR OR REPLACE NO. 2 LIGHT WIRE. Refer to «DISASSEMBLY - Step 5»(ref-388749-S40438924342011031100000)
34. REPLACE REAR COMBINATION LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S39486944322011031100000)
35. REPLACE LICENSE PLATE LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S16277383302011031100000)

When the stop light switch is turned on, the current flows to the stop lights to illuminate then.

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

1. CHECK VEHICLE CONDITION Check whether the lights come on. Result Result Proceed to No stop lights come on A Rear stop lights do not come on B High mounted stop light does not come on C C --> See step 9 B --> See step 5 A: Go to next step
2. INSPECT FUSE (STOP) Remove the STOP fuse from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition STOP fuse Always Below 1 ohms Reinstall the STOP fuse. NG --> See step 11 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (STOP FUSE - STOP LIGHT SWITCH) Disconnect the A11 stop light switch connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition A11-2 - Body Ground Always 11 to 14 V Reconnect the stop light switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT STOP LIGHT SWITCH Remove the stop light switch. Refer to «REMOVAL»(ref-388749-S36588353552011031100000) . Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 1 - 2 Switch pin released Below 1 ohms 1 - 2 Switch pin pushed in 10 kohms or higher Reinstall the stop light switch. NG --> See step 12 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - STOP LIGHT)
5. REPLACE BULB (REAR STOP LIGHT BULB) Temporarily replace the rear stop light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 2»(ref-388749-S16179048892011031100000) . NEXT: Go to next step
6. CHECK REAR COMBINATION LIGHT BULB Check that the rear stop light comes on. OK Rear stop light comes on. NG --> See step 7 OK --> See step 13
7. INSPECT REAR COMBINATION LIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition L5-2 - Body ground Stop light switch OFF --> ON Below 1 V --> 11 to 14 V L6-2 - Body ground Stop light switch OFF --> ON Below 1 V --> 11 to 14 V Reconnect the rear combination light assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - REAR COMBINATION LIGHT) OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - BODY GROUND) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition L5-1 - Body ground Always Below 1 ohms L6-1 - Body ground Always Below 1 ohms Reconnect the rear combination light assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
9. INSPECT HIGH MOUNTED STOP LIGHT Remove the high mounted stop light assembly. Refer to «REMOVAL»(ref-388749-S30391570612011031100000) . Apply battery voltage to the terminals and check that the rear stop light and high mounted stop light come on. OK Measurement Condition Specified Condition Positive battery - Terminal 1 Negative battery - Terminal 2 High mounted stop light comes on Reinstall the high mounted stop light assembly. NG --> See step 15 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (HIGH MOUNTED STOP LIGHT - BODY GROUND) Disconnect the N1 high mounted stop light assembly connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition N1-2 - Body ground Always Below 1 ohms Reconnect the high mounted stop light assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - HIGH MOUNTED STOP LIGHT)
11. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
12. REPLACE STOP LIGHT SWITCH. Refer to «REMOVAL»(ref-388749-S36588353552011031100000)
13. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 2»(ref-388749-S16179048892011031100000)
14. REPLACE REAR COMBINATION LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S39486944322011031100000)
15. REPLACE HIGH MOUNTED STOP LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S30391570612011031100000)

For Automatic transaxle models: The park/neutral position switch turns on when the shift lever is moved into the R position, causing the back-up lights to come on.

For Manual transaxle models: The back-up light switch turns on when the shift lever is moved into the R position, causing the back-up lights to come on.

Scheme 161

Scheme 162

Scheme 163

Scheme 164

Scheme 165

Scheme 166

1. INSPECT FUSE (GAUGE) Remove the GAUGE fuse from the main body ECU. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition GAUGE fuse Always Below 1 ohms Reinstall the GAUGE fuse. NG --> See step 10 OK: Go to next step
2. REPLACE BULB (BACK-UP LIGHT BULB) Temporarily replace the back-up light bulb with a new or normally functioning one. Refer to «DISASSEMBLY - Step 4»(ref-388749-S16179048892011031100000) . NEXT: Go to next step
3. CHECK BACK UP LIGHT BULB Check that the back-up light comes on. OK Back-up light comes on. NG --> See step 4 OK --> See step 11
4. INSPECT REAR COMBINATION LIGHT ASSEMBLY (SYSTEM VOLTAGE) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition L5-6 - Body ground R position 11 to 14 V L6-6 - Body ground R position 11 to 14 V Reconnect the rear combination light connectors. Result Result Proceed to OK A NG (Automatic transaxle models) B NG (Manual transaxle models) C C --> See step 8 B --> See step 6 A: Go to next step
5. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - BODY GROUND) Disconnect the L5 and L6 rear combination light assembly connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition L5-1 - Body ground Always Below 1 ohms L6-1 - Body ground Always Below 1 ohms Reconnect the rear combination light connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
6. INSPECT PARK/NEUTRAL POSITION SWITCH Disconnect the C28 park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 2 (RB) - 1 (RL) R Below 1 ohms 2 (RB) - 1 (RL) Except R 10 kohms or higher Reconnect the park/neutral position switch connector. NG --> See step 13 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (GAUGE FUSE - PARK/NEUTRAL POSITION SWITCH) Disconnect the C28 park/neutral position switch connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition C28-2 (RB) - Body ground Ignition switch ON 11 to 14 V Disconnect the park/neutral position switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - REAR COMBINATION LIGHT)
8. INSPECT BACK-UP LIGHT SWITCH Disconnect the C20 back-up light switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 1 - 2 R Below 1 ohms 1 - 2 Except R 10 kohms or higher Reconnect the back-up light switch connector. NG --> See step 14 OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (GAUGE FUSE - BACK-UP LIGHT SWITCH) Disconnect the C20 back-up light switch connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition C20-2 - Body ground Ignition switch ON 11 to 14 V Reconnect the back-up light switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BACK-UP LIGHT SWITCH - REAR COMBINATION LIGHT)
10. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)
11. END (REPLACE BULB). Refer to «DISASSEMBLY - Step 4»(ref-388749-S16179048892011031100000)
12. REPLACE REAR COMBINATION LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S39486944322011031100000)
13. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(ref-388726-S38430046632011031100000)
14. REPLACE BACK-UP LIGHT SWITCH. Refer to «DISASSEMBLY - Step 4»(ref-388727-S07314897432011031100000)

The main body ECU detects the condition of the door courtesy light switches.

HINT

1. The main body ECU receives door courtesy light switch signals to control the illuminated entry system.

1. When performing troubleshooting, inspect the switch that is related to the malfunction only. For example, if the illuminated entry system does not operate when opening the front passenger side door with the ignition switch off, inspect the front passenger side door courtesy light switch circuit only.

Scheme 167

Scheme 168

1. READ VALUE USING TECHSTREAM Connect an Techstream to the DLC3. Turn the ignition switch to ON. Turn the tester on. Select the following menus: Body Electrical / Main Body / Data List / According to the display on the tester, read the "Data List". MAIN BODY (MAIN BODY ECU) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy light switch signal / ON or OFF ON: Driver side door is open OFF: Driver side door is closed - P Door Courtesy SW Front passenger side door courtesy light switch signal / ON or OFF ON: Front passenger side door is open OFF: Front passenger side door is closed - RR Door Courtesy SW Rear door courtesy light switch RH signal / ON or OFF ON: Rear door RH is open OFF: Rear door RH is closed - RL Door Courtesy SW Rear door courtesy light switch LH signal / ON or OFF ON: Rear door LH is open OFF: Rear door LH is closed - Back Door Courtesy SW Luggage compartment door courtesy switch signal / ON or OFF ON: Luggage compartment door is open OFF: Luggage compartment door is closed - OK Normal conditions listed above are displayed. NG --> See step 2 OK --> See step 4
2. INSPECT DOOR COURTESY LIGHT SWITCH ASSEMBLY Inspect the front door courtesy light switch. Refer to «INSPECTION»(ref-388749-S11610793562011031100000) , rear door courtesy light switch. Refer to «INSPECTION»(ref-388749-S28407105692011031100000) , back door courtesy switch. Refer to «INSPECTION»(ref-388749-S03666314682011031100000) . OK Door courtesy light switches are normal. Result Result Proceed to OK A NG (Front door courtesy light switch) B NG (Rear door courtesy light switch) C NG (Back door courtesy switch) D D --> See step 7 C --> See step 6 B --> See step 5 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR COURTESY LIGHT SWITCH) Disconnect the 4A main body ECU connector. Disconnect each door courtesy light switch connector. Disconnect the O3 back door lock assembly connector. Measure the resistance according to the value(s) in the table below. Standard resistance Front RH side Tester Connection Condition Specified Condition 4A-24 (PCTY) - L1-1 Always Below 1 ohms L1-1 - Body ground Always 10 kohms or higher Front LH side Tester Connection Condition Specified Condition 4A-21 (DCTY) - L4-1 Always Below 1 ohms L4-1 - Body ground Always 10 kohms or higher Rear RH side Tester Connection Condition Specified Condition 4A-20 (RRCY) - L2-1 Always Below 1 ohms L2-1 - Body ground Always 10 kohms or higher Rear LH side Tester Connection Condition Specified Condition 4A-5 (RRCY) - L3-1 Always Below 1 ohms L3-1 - Body ground Always 10 kohms or higher Back door Tester Connection Condition Specified Condition 4A-7 (BCTY) - O3-3 Always Below 1 ohms O3-3 - Body ground Always 10 kohms or higher O3-1 - Body ground Always Below 1 ohms Reconnect the main body ECU connector. Reconnect each door courtesy light switch connector. Reconnect the luggage compartment door lock assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-388783-S23384175322011031100000)
5. REPLACE FRONT DOOR COURTESY LIGHT SWITCH. Refer to «REMOVAL»(ref-388749-S16424327992011031100000)
6. REPLACE REAR DOOR COURTESY LIGHT SWITCH. Refer to «REMOVAL»(ref-388749-S39952489412011031100000)
7. REPLACE BACK DOOR LOCK ASSEMBLY. Refer to «REMOVAL»(ref-388749-S03790958202011031100000)

The main body ECU receives door unlock detection switch signals to control the illuminated entry system.

Scheme 169

The main body ECU receives information regarding the door courtesy switch and door lock position switch, and turns on the room light assembly.

Scheme 170

Scheme 171

Scheme 172

Scheme 173

1. PERFORM ACTIVE TEST USING TECHSTREAM (ILLUMINATED ENTRY SYSTEM) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the tester switch on. Turn the room light switch to the DOOR position. All doors closed (Courtesy light switches OFF). Select the following menus: Body Electrical / Main Body / Active Test / Illuminated Entry System. Check the room light while operating the main body ECU using the tester. MAIN BODY (MAIN BODY ECU) Tester Display Test Part Control Range Normal Condition Illuminated Entry System Room light assembly ON /OFF - OK The illuminated entry system operates normally when operating it through the Techstream. NG --> See step 2 OK --> See step 5
2. INSPECT FUSE (DOME) Remove the DOME fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition DOME fuse Always Below 1 ohms Reinstall the DOME fuse. NG --> See step 7 OK: Go to next step
3. INSPECT ROOM LIGHT ASSEMBLY Remove the room light assembly. Refer to «REMOVAL»(ref-388749-S10004228852011031100000) . Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition A - 2 A - 3 OFF 10 kohmsor higher A - 2 DOOR Below 1 ohms A - 3 ON Below 1 ohms Apply battery voltage to the terminal and check that the room light illuminates. OK Tester Connection Switch Condition Specified Condition Positive battery - 1 Negative battery - 2 DOOR Room light illuminates Positive battery - 1 Negative battery - 3 ON Room light illuminates Reinstall the room light assembly. NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (BATTERY - ROOM LIGHT ASSEMBLY AND MAIN BODY ECU) Disconnect the 4K main body ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition 4K-2 (ILE) - Body ground Room light switch in DOOR position 11 to 14 V 4K-1 (GND1)- Body ground Room light switch in ON position 11 to 14 V Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
5. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-388783-S23384175322011031100000)
6. REPLACE ROOM LIGHT ASSEMBLY. Refer to «REMOVAL»(ref-388749-S10004228852011031100000)
7. REPLACE FUSE. Refer to «PARTS LOCATION»(ref-388783-S10842774402011031100000)