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Home >> Mitsubishi >> 2010 >> Lancer L4-2.0L (4B11) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> CAN Bus Diagnostics >> Diagnostic Item 28 >> Part 3

Part 3

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 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C] 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 for open circuit.

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)

OK: Continuity exists (2 Ohms or less)







3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 14) and combination meter connector C-04 (terminal 15)

OK: Continuity exists (2 Ohms or less)

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 for open circuit.







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)

OK: Continuity exists (2 Ohms or less)







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

OK: Continuity exists (2 Ohms or less)

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 for open circuit.







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)

OK: Continuity exists (2 Ohms or less)







3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 16) and WCM connector C-09 (terminal 10)

OK: Continuity exists (2 Ohms or less)

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 for open circuit.







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 15)

OK: Continuity exists (2 Ohms or less)







3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 21) and SRS-ECU connector C-122 (terminal 16)

OK: Continuity exists (2 Ohms or less)

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 for open circuit.







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)

OK: Continuity exists (2 Ohms or less)







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

OK: Continuity exists (2 Ohms or less)

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 for open circuit.







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)

OK: Continuity exists (2 Ohms or less)







3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 23) and hands free module connector C-110 (terminal 16)

OK: Continuity exists (2 Ohms or less)

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 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C] for open circuit.







1. Disconnect joint connector (CAN1) C-06 and A/C-ECU connector C-20 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C], 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 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C] (terminal 11)

OK: Continuity exists (2 Ohms or less)







3. Check the wiring harness between joint connector (CAN1) C-06 (terminal 12) and A/C-ECU connector C-20 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C] (terminal 12)

OK: Continuity exists (2 Ohms or less)

Q: Is the wiring harness between joint connector (CAN1) C-06 and A/C-ECU connector C-20 [vehicles with A/C] or heater control unit connector C-48 [vehicles without A/C] in good condition?

YES (vehicles without MMCS): Go to Step 44.
YES (vehicles with MMCS): Go to Step 45.

NO: Go to Step 54.
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