Part 2

STEP 12. Check the CAN_H line (communication line including the A/C-ECU) between joint connector (3) and the A/C-ECU connector for short to ground. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect joint connector (3) C-02, and measure the resistance at the wiring harness side of joint connector (3) C-02.
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

4. Measure the resistance between joint connector (3) terminal 6 and body ground.

OK: 1 kOhm or more

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, go to Step 15.

NO: If the resistance measures less than 1 kOhm, go to Step 13.

STEP 13. Check A/C-ECU connector C-10 or C-15 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

CAUTION: The strand end of the twisted wire should be within 10 cm (4 inches) from the connector. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Is A/C-ECU connector C-10 or C-15 in good condition?

YES: Go to Step 14.

NO: Repair the damaged parts.

STEP 14. Check the CAN_H line (communication line only) between joint connector (3) and A/C-ECU connector for short to ground. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect joint connector (3) C-02 and A/C-ECU connector C-10 or C-15 , and measure the resistance at the wiring harness side of joint connector (3) C-02.
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

4. Measure the resistance between joint connector (3) terminal 6 and body ground.

OK: 1 kOhm or more

CAUTION: Strictly observe the specified wiring harness repair procedure. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, diagnose CAN bus lines thoroughly by referring to DIAGNOSTIC ITEM 15.

NO: If the resistance measures less than 1 kOhm, repair the wiring harness between joint connector (3) and the A/C-ECU connector.

STEP 15. Check the CAN_H line (communication line including the SRS-ECU) between joint connector (3) and the SRS-ECU connector for short to ground. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

4. Measure the resistance between joint connector (3) terminals 3 and body ground.

OK: 1 kOhm or more

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, go to Step 21.

NO: If the resistance measures less than 1 kOhm, go to Step 16.

STEP 16. Check intermediate connector C-22 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

CAUTION: The strand end of the twisted wire should be within 10 cm (4 inches) from the connector. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Is intermediate connector C-22 in good condition?

YES: Go to Step 17.

NO: Repair the damaged parts.

STEP 17. Check the CAN_H-side bus line (communication line including ECUs) of the floor wiring harness for short to ground. Measure the resistance at intermediate connector C-22.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect intermediate connector C-22, and measure the resistance at the male side (at floor wiring harness side).
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

STEP 18. Check SRS-ECU connector C-121 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

CAUTION: The strand end of the twisted wire should be within 10 cm (4 inches) from the connector. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Is SRS-ECU connector C-121 in good condition?

YES: Go to Step 19.

NO: Repair the damaged parts.

STEP 19. Check the CAN_ H line (communication line only) between the SRS-ECU connector and the intermediate connector for a short circuit. Measure the resistance at intermediate connector C-22.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect intermediate connector C-22 and SRS-ECU connector C-121, and measure the resistance at the male side of intermediate connector C-22 (at floor wiring harness side).
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

4. Measure the resistance between intermediate connector terminal 22 and body ground.

OK: 1 kOhm or more

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, diagnose CAN bus lines thoroughly by referring to DIAGNOSTIC ITEM 15.

NO: If the resistance measures less than 1 kOhm, repair the wiring harness between intermediate connector C-29 and SRS-ECU connector.

STEP 20. Check the CAN_H line (communication line only) between joint connector (3) and the intermediate connector for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect intermediate connector C-22 and joint connector (3) C-02, and measure the resistance at the wiring harness side of joint connector (3) C-02.
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

4. Measure the resistance between joint connector (3) terminals 3 and body ground.

OK: 1 kOhm or more

CAUTION: Strictly observe the specified wiring harness repair procedure. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, diagnose CAN bus lines thoroughly by referring to DIAGNOSTIC ITEM 15.

NO: If the resistance measures less than 1 kOhm, repair the wiring harness between intermediate connector C-22 and joint connector (3).

STEP 21. Check the CAN_H line (communication line only) between joint connector (3) and the data link connector for short to ground. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

4. Measure the resistance between joint connector (3) terminal 7 and body ground.

OK: 1 kOhm or more

CAUTION: Strictly observe the specified wiring harness repair procedure. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, go to Step 22.

NO: If the resistance measures less than 1 kOhm, repair the wiring harness between joint connector (3) and the data link connector.

STEP 22. Check the CAN_H line (communication line only) between intermediate connector C-29 and joint connector (3) for short to ground. Measure the resistance at joint connector (3) C-02.

CAUTION: A digital multimeter should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

CAUTION: The test wiring harness should be used. For details refer to Service Precautions/Vehicle Damage Warnings.

1. Disconnect intermediate connector C-29 and joint connector (3) C-02, and measure the resistance at the wiring harness side of joint connector (3) C-02.
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.

3. Disconnect the negative battery terminal.

4. Measure the resistance between joint connector (3) terminal 9 and body ground.

OK: 1 kOhm or more

CAUTION: Strictly observe the specified wiring harness repair procedure. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Does the resistance measure 1 kOhm or more?

YES: If the resistance measures 1 kOhm or more, diagnose CAN bus lines thoroughly by referring to DIAGNOSTIC ITEM 15.

NO: If the resistance measures less than 1 kOhm, repair the wiring harness between intermediate connector C-29 and joint connector (3).

STEP 23. Check ABS-ECU connector A-02 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

CAUTION: The strand end of the twisted wire should be within 10 cm (4 inches) from the connector. For details refer to Service Precautions/Vehicle Damage Warnings.

Q: Is ABS-ECU connector A-02 in good condition?

YES: Go to Step 24.

NO: Repair the damaged parts.