Part 2

STEP 16. Check the CAN_L and H lines (communication lines including the SRS-ECU) between joint connector (3) and the SRS-ECU for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.





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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 3 and 14.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to Step 20.

NO : If the resistance measures less than 1 Kohms, go to Step 17.

STEP 17. 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.

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

YES : Go to Step 18.

NO : Repair the damaged parts.

STEP 18. Check the CAN_L and H lines (communication lines only) between joint connector (3) and the SRS-ECU for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




1. Disconnect joint connector (3) C-02 and SRS-ECU connector C-121, 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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 3 and 14.

OK: 1 Kohms or more

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to Step 19.

NO : If the resistance measures less than 1 Kohms, repair the wiring harness between joint connector (3) and the SRS-ECU connector.

STEP 19. Check the SRS-ECU for short circuit. Measure the resistance at SRS-ECU connector C-121.

CAUTION: A digital multimeter should be used.




1. Disconnect SRS-ECU connector C-121, and measure the resistance at the component side of SRS-ECU connector C-121.




2. Measure the resistance between SRS-ECU connector terminals 32 and 43.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, diagnose CAN bus lines thoroughly by referring to Diagnostic Item 14.

NO : If the resistance measures less than 1 Kohms, replace the SRS-ECU.

STEP 20. Check the CAN_L and H lines (communication lines including the TPMS reciver) between joint connector (3) and the TPMS reciver for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 10 and 21.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 24.

NO : If the resistance measures less than 1 Kohms, go to Step 21.

STEP 21. Check TPMS reciver connector C-133 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.

Q: Is TPMS reciver connector C-133 in good condition?

YES : Go to Step 22.

NO : Repair the damaged parts.

STEP 22. Check the CAN_L and H lines (communication lines only) between joint connector (3) and the TPMS reciver for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




1. Disconnect joint connector (3) C-02 and TPMS reciver connector C-133, 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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 10 and 21.

OK: 1 Kohms or more

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to Step 23.

NO : If the resistance measures less than 1 Kohms, repair the wiring harness between joint connector (3) and the TPMS reciver connector.

STEP 23. Check the TPMS reciver for short circuit. Measure the resistance at TPMS reciver connector C-133.

CAUTION: A digital multimeter should be used.




1. Disconnect TPMS reciver connector C-133, and measure the resistance at the component side of TPMS reciver connector C-133.




2. Measure the resistance between TPMS reciver connector terminals 1 and 2.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, diagnose CAN bus lines thoroughly by referring to Diagnostic Item 14.

NO : If the resistance measures less than 1 Kohms, replace the TPMS reciver.

STEP 24. Check the CAN_L and H lines (communication lines including the multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system)) between joint connector (3) and the middle-grade multi-center display for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 8 and 19.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 28.

NO : If the resistance measures less than 1 Kohms, go to STEP 25.

STEP 25. Check multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)] 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.

Q: Is multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)] in good condition?

YES : Go to STEP 26.

NO : Repair the damaged parts.

STEP 26. Check the CAN_L and H lines (communication lines only) between joint connector (3) and the multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




1. Disconnect joint connector (3) C-02 and multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)], 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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 8 and 19.

OK: 1 Kohms or more

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 27.

NO : If the resistance measures less than 1 Kohms, repair the wiring harness between joint connector (3) and multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector.

STEP 27. Check the multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) for short circuit. Measure the resistance at multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)].

CAUTION: A digital multimeter should be used.




1. Disconnect multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)], and measure the resistance at the component side of multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector C-05 [multi-center display unit (middle-grade type)] or C-31 [multi-center display unit (vehicles with mitsubishi multi communication system)].




2. Measure the resistance between the multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system) connector terminals 12 and 13 [multi-center display unit (middle-grade type)] or terminals 5 and 15 [multi-center display unit (vehicles with mitsubishi multi communication system)].

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, diagnose CAN bus lines thoroughly by referring to Diagnostic Item 16

NO : If the resistance measures lower than 1 Kohms, replace the multi-center display unit (middle-grade type or vehicles with mitsubishi multi communication system).

STEP 28. Check data link connector C-125 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.

Q: Is data link connector C-125 in good condition?

YES : Go to STEP 29.

NO : Repair the damaged parts.

STEP 29. Check the CAN_L and H lines (communication lines only) between joint connector (3) and the data link connector for a short circuit. Measure the resistance at joint connector (3) C-02.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 7 and 18.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 30.

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

STEP 30. Check the CAN_L and H lines (communication lines 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.
- The test wiring harness should be used.




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.

3. Disconnect the negative battery terminal.




4. Measure the resistance between joint connector (3) terminals 9 and 20.

OK: 1 Kohms or more

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, diagnose CAN bus lines thoroughly by referring to Diagnostic Item 16

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

STEP 31. 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.

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

YES : Go to STEP 32.

NO : Repair the damaged parts.

STEP 32. Check the CAN_L and H lines (communication lines only) between the ABS-ECU connector and the intermediate connector for a short circuit. Measure the resistance at intermediate connector C-29.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




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

CAUTION: Disconnect the negative battery terminal.

3. Disconnect the negative battery terminal.




4. Measure the resistance between intermediate connector terminals 11 and 12.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 33.

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

STEP 33. Check powertrain control module connector B-19 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.

Q: Is powertrain control module connector B-19 in good condition?

YES : Go to STEP 34.

NO : Repair the damaged parts.

STEP 34. Check the CAN_L and H lines (communication lines only) between the powertrain control module connector and the ABS-ECU connector for a short circuit. Measure the resistance at powertrain control module connector B-19.

CAUTION:
- A digital multimeter should be used.
- The test wiring harness should be used.




1. Disconnect powertrain control module connector B-19 and ABS-ECU connector A-02, and measure the resistance at the harness side of powertrain control module connector B-19.
2. Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION: Disconnect the negative battery terminal.

3. Disconnect the negative battery terminal.




4. Measure the resistance between powertrain control module connector terminals 17 and 18.

OK: 1 Kohms or more

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 35.

NO : If the resistance measures less than 1 Kohms, repair the wiring harness between powertrain control module connector and ABS-ECU connector.

STEP 35. Check the ABS-ECU for short circuit. Measure the resistance at ABS-ECU connector A-02.

CAUTION: A digital multimeter should be used.




1. Disconnect ABS-ECU connector A-02, and measure the resistance at the component side of ABS-ECU connector A-02.




2. Measure the resistance between ABS-ECU connector terminals 7 and 25.

OK: 1 Kohms or more

Q: Does the resistance measure 1 Kohms or more?

YES : If the resistance measures 1 Kohms or more, go to STEP 36.

NO : If the resistance measures less than 1 Kohms, replace the ABS-ECU.

STEP 36. Check the powertrain control module for short circuit. Measure the resistance at powertrain control module connector B-19.

CAUTION: A digital multimeter should be used.




1. Disconnect powertrain control module connector B-19, and measure the resistance at the component side of powertrain control module connector B-19.




2. Measure the resistance between powertrain control module connector terminals 17 and 18.

OK: 120 ± 20 ohms

Q: Does the resistance measure 120 ± 20 ohms?

YES : If the resistance measures 120 ± 20 ohms, diagnose CAN bus lines thoroughly by referring to Diagnostic Item 16

NO : If the resistance does not measure 120 ± 20 ohms, replace the powertrain control module.