Smart Key System (Keyless Start) (Diagnostic Codes & Symptom Tests): Diagnosis Toyota 4Runner V

INSPECTION PROCEDURE

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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Scheme 114

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) Disconnect the F80 power management control ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F80-2 (AM21) - Body ground Always 9.5 to 14 V F80-1 (AM22) - Body ground TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) Disconnect the F80 power management control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-6 (GND) - Body ground Always Below 1 ohms F80-5 (GND2) - Body ground TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY) Remove the No. 1 integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1C-3 20°C (68°F) 255 to 387 ohms TEXT IN ILLUSTRATION *a Component without harness connected (No. 1 Integration Relay) NG --> REPLACE NO. 1 INTEGRATION RELAY OK: Go to next step
4. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAYS) Remove the driver side junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2C-52 - 2B-4 20°C (68°F) 101.25 to 123.75 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Driver Side Junction Block Assembly) NG --> REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Disconnect the F80 power management control ECU connector. Disconnect the 2C driver side junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-20 (IG1D) - 2C-52 Always Below 1 ohms F80-20 (IG1D) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) Disconnect the 2B driver side junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-4 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 INTEGRATION RELAY) Disconnect the F81 power management control ECU connector. Disconnect the 1C No. 1 integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F81-8 (IG2D) - 1C-1 Always Below 1 ohms F81-8 (IG2D) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND) Disconnect the 1C No. 1 integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-3 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU Install the No. 1 integration relay. Install the driver side junction block assembly. Connect the power management control ECU connectors. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) - - Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F81-8 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher F80-20 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher NG --> See step 10 OK --> See step 11
10. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
11. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY) Remove the driver side junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2C-48 - 2B-4 20°C (68°F) 101.25 to 123.75 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Driver Side Junction Block Assembly) NG --> REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Disconnect the F80 power management control ECU connector. Disconnect the 2C driver side junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-19 (ACCD) - 2C-48 Always Below 1 ohms F80-19 (ACCD) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK POWER MANAGEMENT CONTROL ECU Connect the power management control ECU connector. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) - - Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F80-19 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher NG --> See step 7 OK --> See step 8
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
8. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION METER) Disconnect the F80 power management control ECU connector. Disconnect the F14 combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-23 (SPD) - F14-28 (+S) Always Below 1 ohms F80-23 (SPD) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Signal Vehicle speed signal / Stop or Run Stop: Vehicle stopped Run: Vehicle driven (5 km/h (3 mph) or higher) - OK Stop (vehicle stopped) or Run (vehicle driven) appears on the screen according the vehicle speed. NG --> See step 5 OK --> See step 6
5. CHECK POWER MANAGEMENT CONTROL ECU Using an oscilloscope, check the vehicle speed input signal waveform from the combination meter at the terminal of the power management control ECU. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) - - Check the signal waveform according to the condition(s) in the table below. Standard Frequency Tester Connection Tool Setting Condition Specified Condition F80-23 (SPD) - Body ground 5 V/DIV., 10 ms./DIV. Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) (Scheme 118) NG --> See step 8 OK --> See step 7
6. GO TO METER/GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
8. GO TO METER/GAUGE SYSTEM (TERMINALS OF ECU). Refer to TERMINALS OF ECU

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

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1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT STOP LIGHT SWITCH ASSEMBLY Inspect the stop light switch assembly. Refer to INSPECTION - Step 1 . NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) Disconnect the F81 power management control ECU connector. Disconnect the A4 stop light switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F81-11 (STP1) - A4-1 Always Below 1 ohms F81-11 (STP1) - Body ground Always 10 kohms or higher Reconnect the A4 stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F81-11 (STP1) - Body ground Brake pedal not depressed Below 1 V Brake pedal depressed ([Voltage at terminal AM21 or AM22] minus 2.0 V) or higher TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light Switch1 Stop light switch 1 / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal depressed) or OFF (brake pedal released) appears on the screen according to the stop light switch condition. NG --> See step 8 OK --> See step 7
6. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to REMOVAL
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
8. GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure. After replacing the steering lock actuator assembly (steering lock ECU), perform key ID code registration. Refer to REGISTRATION .

Scheme 120

1. CHECK FOR DTC (LIN COMMUNICATION SYSTEM) Clear the DTCs. Refer to DTC CHECK / CLEAR . Check for DTCs. Refer to DTC CHECK / CLEAR . OK LIN communication system DTCs B2287 and B2785 are not output simultaneously. NG --> See step 7 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F68-4 (SLP1) - Body ground Steering lock locked 10 kohms or higher F68-4 (SLP1) - Body ground Steering lock released Below 1 ohms TEXT IN ILLUSTRATION *a Component with harness connected (Steering Lock ECU) NG --> See step 8 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU) Disconnect the F80 power management control ECU connector. Disconnect the F68 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-3 (SLP) - F68-4 (SLP1) Always Below 1 ohms F80-3 (SLP) or F68-4 (SLP1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Steering Unlock Switch Steering lock condition / ON or OFF ON: Steering lock released (Engine switch on [ACC]) OFF: Steering lock locked (Engine switch off) - OK ON (steering lock released) or OFF (steering lock locked) appears on the screen according to the steering lock condition. NG --> See step 9 OK --> See step 8
7. GO TO DTC B2287. Refer to DTC B2287: LIN Communication Master Malfunction; DTC B278C: Lost Communication with Power Source Control
8. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to REMOVAL
9. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 121

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ECM) Disconnect the F81 power management control ECU connector. Disconnect the B37 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F81-4 (NE) - B37-29 (NEO) Always Below 1 ohms F81-4 (NE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. READ VALUE USING TECHSTREAM (ENGINE CONDITION) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Condition Engine condition / Stop or Run Stop: Engine stopped Run: Engine running - OK ON (engine stopped) or OFF (engine running) appears on the screen according to the engine condition. NG --> See step 5 OK --> See step 6
5. CHECK POWER MANAGEMENT CONTROL ECU Reconnect the power management control ECU connectors. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) - - Using an oscilloscope, check the engine speed input signal waveform at the terminal of the power management control ECU. Standard Frequency Tester Connection Condition Specified Condition F81-4 (NE) - Body ground Engine stopped No pulse generated Engine running Pulse generated (1000 RPM: 200 Hz) NG --> See step 8 OK --> See step 7
6. GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
7. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
8. GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

After the certification ECU, steering lock actuator assembly (steering lock ECU) and/or ID code box is replaced, perform the registration procedure for the engine immobiliser system. Refer to REGISTRATION .

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1. CHECK IF ENGINE STARTS (INITIALIZE STEERING LOCK) Place the key on the seat. Move the shift lever to P and depress the brake pedal. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts. Open and close the driver side door with the engine switch off. Check if the engine can be started. OK Engine can be started. HINT: After the battery is discharged and then recharged, the engine may not start unless the steering lock is initialized using the above procedure. NG --> See step 2 OK --> See step 27
2. READ VALUE USING TECHSTREAM (POWER SUPPLY OPEN) AND CHECK FOR DTC Read the value using the Techstream (Power Supply Open). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. According to the display on the Techstream, read the Data List. SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Power Supply Open Power supply open / OK or NG (Past) OK: Power supply normal NG (Past): Power supply open occurred in past - Check for DTCs. Enter the following menus: Body Electrical / (desired system) / Trouble Codes. Read the DTCs. RESULT Result Proceed to No DTC is output, power supply open has not occurred in past A DTCs other than B2782 are output B Power supply open has occurred in past and/or DTC B2782 is output C B --> See step 26 C --> See step 28 A: Go to next step
3. CHECK ENGINE SWITCH CONDITION Check if the power source mode changes. When the key is inside the vehicle and the shift lever is in P, push the engine switch and check that the power source mode changes. RESULT Result Proceed to OK: off --> on (ACC) --> on (IG) --> off A Power source mode does not change to on (IG) or on (ACC). B Power source mode does not change to on (IG). C Power source mode does not change to on (ACC). D B --> See step 29 C --> See step 30 D --> See step 31 A: Go to next step
4. CHECK CRANKING FUNCTION Check the engine cranking function. When there is fuel in the fuel tank, the key is inside the vehicle and the shift lever is in P, check that depressing the brake pedal and pressing the engine switch cranks the engine. OK Engine cranks. NG --> See step 5 OK --> See step 22
5. INSPECT PARK/NEUTRAL POSITION SWITCH Disconnect the B42 park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (B) - 5 (L) Shift lever in P or N Below 1 ohms Shift lever not in P or N 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Park/Neutral Position Switch) NG --> See step 19 OK: Go to next step
6. INSPECT ST RELAY Remove the ST relay from the engine room relay block. Measure the resistance according value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> See step 19 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) Disconnect the F81 power management control ECU connector. Move the shift lever to P or N. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F81-3 (STAR) - Body ground 20°C (68°F) 93.8 to 136.3 ohms TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Power Management Control ECU) NG --> See step 19 OK: Go to next step
8. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light Switch1 Stop light switch 1 / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal depressed) or OFF (brake pedal released) appears on the screen according to the condition of the brake pedal. NG --> See step 15 OK: Go to next step
9. READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Steering Unlock Switch Steering unlock switch / ON or OFF ON: Steering lock released OFF: Steering lock locked - OK ON (steering lock released) or OFF (steering lock locked) appears on the screen according to the steering lock condition. NG --> See step 17 OK: Go to next step
10. CHECK STEERING LOCK Turn the engine switch from off to on (ACC) and check that the steering lock moves to the released position. OK Lock moves to released position. NG --> See step 32 OK: Go to next step
11. READ VALUE USING TECHSTREAM (ENGINE START REQUEST) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Smart Key / Data List. According to the display on the Techstream, read the Data List. Turn the engine switch on (IG). SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Start Request Start request signal response / OK or NG OK: Received NG: Not received - OK OK appears on the screen. NG --> See step 34 OK: Go to next step
12. READ VALUE USING TECHSTREAM (L CODE CHECK) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Smart Key / Data List. According to the display on the Techstream, read the Data List. Turn the engine switch on (IG). SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check L code certification result / OK or NG OK: L code certification result normal NG: L code certification result abnormal - OK OK (L code certification result normal) appears on the screen. NG --> See step 33 OK: Go to next step
13. READ VALUE USING TECHSTREAM (S CODE CHECK) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Smart Key / Data List. According to the display on the Techstream, read the Data List. Turn the engine switch on (IG). SMART KEY Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check S code certification result / OK or NG OK: S code certification result normal NG: S code certification result abnormal - OK OK (S code certification result normal) appears on the screen. NG --> See step 33 OK: Go to next step
14. READ VALUE USING TECHSTREAM (STARTER REQUEST SIGNAL) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. Turn the engine switch on (IG). POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter Request Signal Starter request signal monitor / ON or OFF ON: ST relay on OFF: ST relay off The engine switch is pressed and held with the shift lever in P or N. NOTE: Check that the engine switch indicator is illuminated in green and push the engine switch. OK The Data List item changes from OFF to ON when the engine switch is pushed. NG --> See step 25 OK --> See step 22
15. INSPECT STOP LIGHT SWITCH ASSEMBLY Inspect the stop light switch assembly. Refer to INSPECTION - Step 1 . NG --> See step 23 OK: Go to next step
16. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 25
17. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
18. INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) See step 4 NG --> See step 24 OK --> See step 25
19. REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE ST RELAY, PARK/NEUTRAL POSITION SWITCH Replace the ST relay, park/neutral position switch assembly with a new or normally functioning part, or repair or replace any damaged wire harness or connector. NEXT: Go to next step
20. READ VALUE USING TECHSTREAM (STARTER REQUEST SIGNAL) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. Turn the engine switch on (IG). POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter Request Signal Starter request signal monitor / ON or OFF ON: ST relay on OFF: ST relay off The engine switch is pressed and held with the shift lever in P or N. NOTE: Check that the engine switch indicator is illuminated in green and push the engine switch. OK The Data List item changes from OFF to ON when the engine switch is pushed. NG --> See step 25 OK: Go to next step
21. CHECK IF ENGINE STARTS Place the key on the seat. Move the shift lever to P and depress the brake pedal. Check that the engine switch indicator is illuminated in green, push the engine switch and check that the engine starts. Open and close the driver side door with the engine switch off. Check if the engine can be started. OK Engine can be started. NG --> See step 35 OK --> END
22. GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
23. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to REMOVAL
24. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU). Refer to REMOVAL
25. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
26. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
27. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
28. GO TO STEERING LOCK SYSTEM (B2782). Refer to DTC B2782: Power Source Control ECU Malfunction
29. GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC). Refer to Power Source Mode does not Change to ON (IG and ACC)
30. GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG). Refer to Power Source Mode does not Change to ON (IG)
31. GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC). Refer to Power Source Mode does not Change to ON (ACC)
32. GO TO STEERING LOCK SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
33. GO TO ENGINE IMMOBILISER SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
34. REPLACE CERTIFICATION ECU. Refer to REMOVAL
35. GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to HOW TO PROCEED WITH TROUBLESHOOTING

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 125

Scheme 126

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. READ VALUE USING TECHSTREAM (KEY CERTIFI WAIT T-OUT) Connect the Techstream to the DLC3. Turn the Techstream on. HINT: When using the Techstream with the engine switch off, turn any of the door courtesy light switches on and off repeatedly at intervals of 1.5 seconds or less until communication between the tester and vehicle starts. Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List and check that "No" is displayed 1 second after turning the engine switch from off to on (IG). POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Key Certifi Wait T-Out Key certification waiting timed out / Yes or No Yes: Key certification waiting timed out No: Key certification completed within specified time - OK "No" is displayed 1 second after turning the engine switch from off to on (IG). NG --> See step 9 OK: Go to next step
4. READ VALUE USING TECHSTREAM (START SWITCH 1, 2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. According to the display on the Techstream, read the Data List. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1 / ON or OFF ON: Engine switch pushed OFF: Engine switch not pushed - Start Switch2 Start Switch 2 / ON or OFF ON: Engine switch pushed OFF: Engine switch not pushed - OK The display changes in response to the operation of the engine switch. NG --> See step 7 OK: Go to next step
5. CHECK POWER MANAGEMENT CONTROL ECU Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source Control / Data List. Read the Data List and check that the display changes according to the changes in the power source mode when the engine switch is pushed. POWER SOURCE CONTROL Tester Display Measurement Item/Range Normal Condition Diagnostic Note Power Supply Condition Power Supply Condition / IG2 ON, ST ON, All OFF, IG1 ON or ACC ON IG2 ON: IG2 relay on ST ON: ST request signal on All OFF: All relays off IG1 ON: IG1 relay on ACC ON: ACC relay on - OK Display changes according to the changes in the power source mode when the engine switch is pushed. Measure the voltage according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component with harness connected (Power Management Control ECU) - - Standard Voltage Tester Connection Switch Condition Specified Condition F80-20 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (ACC) Engine switch on (IG) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher F81-8 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (ACC) Engine switch on (IG) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher F80-19 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher Engine switch on (IG) ((Voltage at terminal AM21 or AM22) minus 2.0 V) or higher NG --> See step 10 OK: Go to next step
6. CONFIRMATION TEST Check that the power source mode changes to on (ACC) and on (IG) when operating the engine switch. OK The power source mode changes to on (ACC) and on (IG) in response to the operation of the engine switch. NG --> CHECK RELAY CONTACT SIDE CIRCUIT OK --> See step 11
7. INSPECT ENGINE SWITCH Remove the engine switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 7 (SS1) - 5 (GND) Engine switch not pushed 10 kohms or higher Engine switch pushed Below 1 ohms 2 (SS2) - 5 (GND) Engine switch not pushed 10 kohms or higher Engine switch pushed Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Engine Switch) NG --> See step 15 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE SWITCH) Disconnect the F80 power management control ECU connector. Disconnect the F71 engine switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F80-17 (SSW2) - F71-2 (SS2) Always Below 1 ohms F80-18 (SSW1) - F71-7 (SS1) F80-17 (SSW2) - Body ground Always 10 kohms or higher F80-18 (SSW1) - Body ground F71-5 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
9. CHECK FOR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Power Source / Trouble Codes. Read the DTCs. Enter the following menus: Body Electrical / Smart Key / Trouble Codes. Read the DTCs. RESULT Result Proceed to None of the following DTCs are output: B2785 Communication Malfunction between ECUs Connected by LIN B2287 LIN Communication Master Malfunction B2784 Antenna Coil Open/Short A DTC B2287 is output but B2785 is not output. B A DTC other than B2287 is output. C B --> See step 12 C --> See step 13 A --> See step 14
10. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
11. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
12. GO TO DTC (B2287). Refer to DTC B2287: LIN Communication Master Malfunction; DTC B278C: Lost Communication with Power Source Control
13. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
14. GO TO SMART KEY SYSTEM (FOR ENTRY FUNCTION) (Room Oscillator does not Recognize Key). Refer to Room Oscillator does not Recognize Key
15. REPLACE ENGINE SWITCH. Refer to REMOVAL

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system. Inspect the fuses for circuits related to this system before performing the following inspection procedure.