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Home >> Mitsubishi >> 2008 >> Lancer L4-2.0L (4B11) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Diagnostic Item 23 >> Part 2

Part 2

STEP 22. Check the wiring harness between joint connector (CAN1) C-06 and CAN box unit connector C-108 for a short to power supply. Measure the voltage at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and measure the voltage at the wiring harness side of joint connector (CAN1).
2. Turn the ignition switch to the ON position.




3. Measure the voltage between joint connector (CAN1) terminal 7 and body ground.

OK: 4.7 volts or less




4. Measure the voltage between joint connector (CAN1) terminal 20 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES (vehicles without satellite radio) : Go to Step 24.

YES (vehicles with satellite radio) : Go to Step 23.

NO : Go to Step 56.

STEP 23. Check the wiring harness between joint connector (CAN1) C-06 and satellite radio tuner connector C-17 for a short to power supply. Measure the voltage at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and measure the voltage at the wiring harness side of joint connector (CAN1).
2. Turn the ignition switch to the ON position.




3. Measure the voltage between joint connector (CAN1) terminal 2 and body ground.

OK: 4.7 volts or less




4. Measure the voltage between joint connector (CAN1) terminal 13 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 24.

NO : Go to Step 57.

STEP 24. Check the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301 for a short to power supply. Measure the voltage at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1) and ETACS-ECU connector C-301, and measure the voltage at the wiring harness side of joint connector (CAN1).
2. Turn the ignition switch to the ON position.




3. Measure the voltage between joint connector (CAN1) terminal 6 and body ground.

OK: 4.7 volts or less




4. Measure the voltage between joint connector (CAN1) terminal 19 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 58.

NO : Repair the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301.

STEP 25. Check the wiring harness for line-to-line short. Measure the resistance at ETACS-ECU connector C-301

CAUTION: Disconnect the negative battery terminal.

1. Disconnect ETACS-ECU connector C-301, and check that there is continuity at the harness side of ETACS-ECU.




2. Check that there is continuity between ETACS-ECU connector terminals 6 and 7.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 37.

NO : Go to Step 26.

STEP 26. Check the wiring harness between joint connector (CAN1) C-06 and combination meter connector C-04 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 3 and 14.

OK: No continuity

Q: Is the check result normal?

YES (vehicles with KOS) : Go to Step 27.

YES (vehicles with WCM) : Go to Step 28.

NO (vehicles with KOS or WCM) : Go to Step 48.

STEP 27. Check the wiring harness between joint connector (CAN1) C-06 and KOS-ECU connector C-31 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 9 and 22.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 29.

NO : Go to Step 49.

STEP 28. Check the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 5 and 16.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 29.

NO : Go to Step 50.

STEP 29. Check the wiring harness between joint connector (CAN1) C-06 and SRS-ECU connector C-122 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 8 and 21.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 30.

NO : Go to Step 51.

STEP 30. Check the wiring harness between joint connector (CAN1) C-06 and occupant classification-ECU connector D-35-2 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 11 and 24.

OK: No continuity

Q: Is the check result normal?

YES (vehicles without hands free system) : Go to Step 32.

YES (vehicles with hands free system) : Go to Step 31.

NO : Go to Step 52.

STEP 31. Check the wiring harness between joint connector (CAN1) C-06 and hands free module connector C-110 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 10 and 23.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 32.

NO : Go to Step 53.

STEP 32. Check the wiring harness between joint connector (CAN1) C-06 and A/C-ECU connector C-20 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 1 and 12.

OK: No continuity

Q: Is the check result normal?

YES (vehicles without MMCS) : Go to Step 33.

YES (vehicles with MMCS) : Go to Step 34.

NO : Go to Step 54.

STEP 33. Check the wiring harness between joint connector (CAN1) C-06 and radio and CD player or CD changer connector C-104 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 7 and 20.

OK: No continuity

Q: Is the check result normal?

YES (vehicles without satellite radio) : Go to Step 36.

YES (vehicles with satellite radio) : Go to Step 35.

NO : Go to Step 55.

STEP 34. Check the wiring harness between joint connector (CAN1) C-06 and CAN box unit connector C-108 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 7 and 20.

OK: No continuity

Q: Is the check result normal?

YES (vehicles without satellite radio) : Go to Step 36.

YES (vehicles with satellite radio) : Go to Step 35.

NO : Go to Step 56.

STEP 35. Check the wiring harness between joint connector (CAN1) C-06 and satellite radio tuner connector C-17 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1), and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 2 and 13.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 36.

NO : Go to Step 57.

STEP 36. Check the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301 for line-to-line short. Measure the resistance at joint connector (CAN1) C-06.

1. Disconnect joint connector (CAN1) and ETACS-ECU connector C-301, and check that there is continuity at the harness side of joint connector (CAN1).




2. Check that there is continuity between joint connector (CAN1) terminals 6 and 19.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 58.

NO : Repair the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301.

STEP 37. Check the wiring harness between joint connector (CAN1) C-06 and combination meter connector C-04.

CAUTION: Strictly observe the specified wiring harness repair procedure.

1. Disconnect joint connector (CAN1) C-06 and combination meter connector C-301, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 3) and combination meter connector C-04 (terminal 14)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 14) and combination meter connector C-04 (terminal 15)

Q: Is the wiring harness between joint connector (CAN1) C-06 and combination meter connector C-04 in good condition?

YES (vehicles with KOS) : Go to Step 38.

YES (vehicles with WCM) : Go to Step 39.

NO ((vehicles with KOS or WCM) : Go to Step 48.

STEP 38. Check the wiring harness between joint connector (CAN1) C-06 and KOS-ECU connector C-31.

1. Disconnect joint connector (CAN1) C-06 and KOS-ECU connector C-31, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 9) and KOS-ECU connector C-31 (terminal 1)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 22) and KOS-ECU connector C-31 (terminal 2)

Q: Is the wiring harness between joint connector (CAN1) C-06 and KOS-ECU connector C-31 in good condition?

YES : Go to Step 40.

NO : Go to Step 49.

STEP 39. Check the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09.

1. Disconnect joint connector (CAN1) C-06 and WCM connector C-09, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 5) and WCM connector C-09 (terminal 11)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 16) and WCM connector C-09 (terminal 10)

Q: Is the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09 in good condition?

YES : Go to Step 40.

NO : Go to Step 50.

STEP 40. Check the wiring harness between joint connector (CAN1) C-06 and SRS-ECU connector C-122.

1. Disconnect joint connector (CAN1) C-06 and SRS-ECU connector C-122, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 8) and SRS-ECU connector C-122 (terminal 10)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 21) and SRS-ECU connector C-122 (terminal 9)

Q: Is the wiring harness between joint connector (CAN1) C-06 and SRS-ECU connector C-122 in good condition?

YES : Go to Step 41.

NO : Go to Step 51.

STEP 41. Check the wiring harness between joint connector (CAN1) C-06 and occupant classification-ECU connector D-35-2.

1. Disconnect joint connector (CAN1) C-06 and occupant classification-ECU connector D-35-2, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 11) and occupant classification-ECU connector D-35-2 (terminal 24)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 24) and occupant classification-ECU connector D-35-2 (terminal 25)

Q: Is the wiring harness between joint connector (CAN1) C-06 and occupant classification-ECU connector D-35-2 in good condition?

YES (vehicles without hands free system) : Go to Step 43.

YES (vehicles with hands free system) : Go to Step 42.

NO : Go to Step 52.

STEP 42. Check the wiring harness between joint connector (CAN1) C-06 and hands free module connector C-110.

1. Disconnect joint connector (CAN1) C-06 and occupant hands free module connector C-110, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 10) and hands free module connector C-110 (terminal 4)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 23) and hands free module connector C-110 (terminal 16)

Q: Is the wiring harness between joint connector (CAN1) C-06 and hands free module connector C-110 in good condition?

YES : Go to Step 43.

NO : Go to Step 53.

STEP 43. Check the wiring harness between joint connector (CAN1) C-06 and A/C-ECU connector C-20.

1. Disconnect joint connector (CAN1) C-06 and A/C-ECU connector C-20, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 1) and A/C-ECU connector C-20 (terminal 11)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 12) and A/C-ECU connector C-20 (terminal 12)

Q: Is the wiring harness between joint connector (CAN1) C-06 and A/C-ECU connector C-20 in good condition?

YES (vehicles without MMCS) : Go to Step 44.

YES (vehicles with MMCS) : Go to Step 45.

NO : Go to Step 54.

STEP 44. Check the wiring harness between joint connector (CAN1) C-06 and radio and CD player or CD changer connector C-104.

1. Disconnect joint connector (CAN1) C-06 and radio and CD player or CD changer connector C-104, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 7) and radio and CD player or CD changer connector C-104 (terminal 23)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 20) and radio and CD player or CD changer connector C-104 (terminal 33)

Q: Is the wiring harness between joint connector (CAN1) C-06 and radio and CD player or CD changer connector C-104 in good condition?

YES (vehicles without satellite radio) : Go to Step 47.

YES (vehicles with satellite radio) : Go to Step 46.

NO : Go to Step 55.

STEP 45. Check the wiring harness between joint connector (CAN1) C-06 and CAN box unit connector C-108.

1. Disconnect joint connector (CAN1) C-06 and CAN box unit connector C-108, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 7) and CAN box unit connector C-108 (terminal 8)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 20) and CAN box unit connector C-108 (terminal 9)

Q: Is the wiring harness between joint connector (CAN1) C-06 and CAN box unit connector C-108 in good condition?

YES (vehicles without satellite radio) : Go to Step 47.

YES (vehicles with satellite radio) : Go to Step 46.

NO : Go to Step 56.

STEP 46. Check the wiring harness between joint connector (CAN1) C-06 and satellite radio tuner connector C-17.

1. Disconnect joint connector (CAN1) C-06 and satellite radio tuner connector C-17, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 2) and satellite radio tuner connector C-17 (terminal 4)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 13) and satellite radio tuner connector C-17 (terminal 11)

Q: Is the wiring harness between joint connector (CAN1) C-06 and satellite radio tuner connector C-17 in good condition?

YES : Go to Step 47.

NO : Go to Step 57.

STEP 47. Check the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301.

1. Disconnect joint connector (CAN1) C-06 and ETACS-ECU connector C-301, and check the wiring harness.
2. Check the wiring harness between joint connector (CAN1) C-06 (terminal 6) and ETACS-ECU connector C-301 (terminal 6)
3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 19) and ETACS-ECU connector C-301 (terminal 7)

Q: Is the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301 in good condition?

YES : Go to Step 58.

NO : Repair the wiring harness between joint connector (CAN1) C-06 and ETACS-ECU connector C-301.
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