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Home >> Mitsubishi >> 2007 >> Endeavor AWD V6-3.8L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Diagnostic Item 3 >> Part 2
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Part 2

STEP 29. Check the CAN_H line (communication line only) between intermediate connector C-31 and joint connector(4) for a short to the power supply. Measure the voltage at joint connector (4) C-101.

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




1. Disconnect intermediate connector C-31 and joint connector (4) C-101, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




3. Measure the voltage between joint connector (4) terminal 20 and body ground.

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Diagnose CAN bus lines thoroughly by referring to Diagnostic Item 19. Diagnostic Item 19

NO: more than 1.0 V> Repair the wiring harness between intermediate connector C-31and joint connector (4).

STEP 30. Check ASC/TCL-ECU connector A-32 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






CAUTION: The strand end of the twist wire should be within 10 cm (4 inches) from the connector.

Q: Is ASC/TCL-ECU connector A-32 in good condition?

YES: Go to Step 31.

NO: Repair the damaged parts.

STEP 31. Check the CAN_H line (communication line only) between intermediate connector C-31 and ASC/TCL-ECU connector for a short to the power supply. Measure the voltage at intermediate connector C-31.

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







1. Disconnect intermediate connector C-31 and ASC/TCL-ECU connector A-32, and measure the voltage at the male side of intermediate connector C-31 (at front wiring harness side).
2. Turn the ignition switch to the "ON" position.




3. Measure the voltage between intermediate connector terminal 11 and body ground.

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Go to Step 32.

NO: more than 1.0 V> Repair the wiring harness between intermediate connector C-31and ASC/TCL-ECU connector.

STEP 32. Check the CAN_H line (communication line only) between the powertrain control module connector and ASC/TCL-ECU connector for a short to the power supply. Measure voltage at powertrain control module connector B-18.

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







1. Disconnect powertrain control module connector B-18 and ASC/TCL-ECU connector A-32, and measure the voltage at the harness side of powertrain control module connector B-18.
2. Turn the ignition switch to the "ON" position.




3. Measure the voltage between powertrain control module connector terminal 17 and body ground.

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Go to Step 33.

NO: more than 1.0 V> Repair the wiring harness between powertrain control module connector and ASC/TCL-ECU connector.

STEP 33. Check the CAN_H line inside the ASC/TCL-ECU for a short to the power supply. Measure the voltage at ASC/TCL-ECU connector A-32.

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




1. Disconnect ASC/TCL-ECU connector A-32.




2. Connect special tool MB991952 (ABS check harness) to the ASC/TCL-ECU and the wiring harness, and measure the voltage at special tool MB991952 (ABS check harness).
3. Turn the ignition switch to the "ON" position.
4. Measure the voltage between special tool MB991952 (ABS check harness) connector terminal 23 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Diagnose CAN bus lines thoroughly by referring to Diagnostic Item 19. Diagnostic Item 19

NO: more than 4.0 V> Replace the ASC/TCL-ECU.

STEP 34. Check intermediate connector C-31 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






CAUTION: The strand end of the twist wire should be within 10 cm (4 inches) from the connector.

Q: Is intermediate connector C-31 in good condition?

YES: Go to Step 35.

NO: Repair the damaged parts.

STEP 35. Check the CAN_L-side bus line (communication line including) of the front wiring harness for a short to the power supply. Measure the voltage at intermediate connector C-31.

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




1. Disconnect intermediate connector C-31, and measure the voltage at the male side (at front wiring harness side).
2. Turn the ignition switch to the "ON" position.




3. Measure the voltage between intermediate connector C-31 terminal 12 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Go to Step 36.

NO: more than 4.0 V> Go to Step 60.

STEP 36. Check joint connector (4) C-101 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






NOTE: For the removal of the joint connector, refer to "How To Disconnect Joint Connector".

CAUTION: The strand end of the twist wire should be within 10 cm (4 inches) from the connector.




Check the joint connector at the wiring harness side for loose, corroded or damaged terminals, or terminals pushed back in the connector, and also check the short pin behind the connector for corrosion, deformation and delamination.

Q: Is joint connector (4) C-101 in good condition?

YES: Go to Step 37.

NO: Repair the damaged parts. Replace the joint connector as necessary.

STEP 37. Check the CAN_L line (communication line including the combination meter) between joint connector(4) and the combination meter connector for a short to the power supply. Measure the voltage at joint connector (4) C-101.

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




1. Disconnect joint connector (4) C-101, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Go to Step 39.

NO: more than 4.0 V> Go to Step 38.

STEP 38. Check the CAN_L line (communication line only) between joint connector (4) and the combination meter connector for a short to the power supply. Measure the voltage at joint connector (4) C-101.

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




1. Disconnect joint connector (4) C-101 and combination meter connector C-102, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Diagnose CAN bus lines thoroughly by referring to Diagnostic Item 19. Diagnostic Item 19

NO: more than 1.0 V> Repair the wiring harness between joint connector (4) and the combination meter connector.

STEP 39. Check the CAN_L line (communication line including the ETACS-ECU) between joint connector (4) and the ETACS-ECU connector for a short to the power supply.Measure the voltage at joint connector (4) C-101.

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




1. Disconnect joint connector (4) C-101, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Go to Step 42.

NO: more than 4.0 V> Go to Step 40.

STEP 40. Check ETACS-ECU connector C-218 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






CAUTION: The strand end of the twist wire should be within 10 cm (4 inches) from the connector.

Q: Is ETACS-ECU connector C-218 in good condition?

YES: Go to Step 41.

NO: Repair the damaged parts.

STEP 41. Check the CAN_L line (communication line only) between joint connector (4) and ETACS-ECU connector fora short to the power supply. Measure the voltage at joint connector (4) C-101.

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







1. Disconnect joint connector (4) C-101 and ETACS-ECU connector C-218, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Diagnose CAN bus lines thoroughly by referring to Diagnostic Item 19. Diagnostic Item 19

NO: more than 1.0 V> Repair the wiring harness between joint connector (4) and the ETACS-ECU connector.

STEP 42. Check the CAN_L line (communication line including the A/C-ECU) between joint connector (4) and the A/C-ECU connector for a short to the power supply. Measure the voltage at joint connector (4) C-101.

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




1. Disconnect joint connector (4) C-101, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Go to Step 45.

NO: more than 4.0 V> Go to Step 43.

STEP 43. Check A/C-ECU connector C-42 or A/C-ECU connector C-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






CAUTION: The strand end of the twist wire should be within 10 cm (4 inches) from the connector.

Q: Is A/C-ECU connector C-42 or A/C-ECU connector C-16 in good condition?

YES: Go to Step 44.

NO: Repair the damaged parts.

STEP 44. Check the CAN_L line (communication line only) between joint connector (4) and A/C-ECU connector for a short to the power supply. Measure the voltage at joint connector (4) C-101.

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







1. Disconnect joint connector (4) C-101 and A/C-ECU connector C-42 or A/C-ECU connector C-16 , and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 1.0 V or less

CAUTION: Strictly observe the specified wiring harness repair procedure.

Q: Does the voltage measure 1.0 V or less?

YES: 1.0 V or less> Diagnose CAN bus lines thoroughly by referring to Diagnostic Item 19. Diagnostic Item 19

NO: more than 1.0 V> Repair the wiring harness between joint connector (4) and the A/C-ECU connector.

STEP 45. Check the CAN_L line (communication line including the SRS-ECU) between joint connector (4) and the SRS-ECU connector for a short to the power supply.Measure the voltage at joint connector (4) C-101.

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




1. Disconnect joint connector (4) C-101, and measure the voltage at the wiring harness side of joint connector (4) C-101.
2. Turn the ignition switch to the "ON" position.




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

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES: 4.0 V or less> Go to Step 51.

NO: more than 4.0 V> Go to Step 46.
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