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Home >> Mitsubishi >> 2008 >> Lancer Evolution L4-2.0L Turbo (4B11T/C) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Diagnostic Item 27 >> Part 2

Part 2

STEP 21. Check the wiring harness between joint connector (CAN1) C-105 and radio and CD player or CD changer connector C-107 for a short to power supply. Measure the voltage at joint connector (CAN1) C-105.

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 5 and body ground.

OK: 4.7 volts or less




4. Measure the voltage between joint connector (CAN1) terminal 16 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 55.

STEP 22. Check the wiring harness between joint connector (CAN1) C-105 and CAN box unit connector C-15 for a short to power supply. Measure the voltage at joint connector (CAN1) C-105.

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 5 and body ground.

OK: 4.7 volts or less




4. Measure the voltage between joint connector (CAN1) terminal 16 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-105 and satellite radio tuner connector C-18 for a short to power supply. Measure the voltage at joint connector (CAN1) C-105.

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-105 and ETACS-ECU connector C-301 for a short to power supply. Measure the voltage at joint connector (CAN1) C-105.

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-105 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-105 and combination meter connector C-04 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and KOS-ECU connector C-05 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and WCM connector C-07 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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 : Go to Step 29.

NO : Go to Step 50.

STEP 29. Check the wiring harness between joint connector (CAN1) C-105 and SRS-ECU connector C-37 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and occupant classification-ECU connector D-39-2 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and hands free module connector C-11 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and A/C-ECU connector C-22 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and radio and CD player or CD changer connector C-107 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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 (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-105 and CAN box unit connector C-15 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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 (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-105 and satellite radio tuner connector C-18 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and ETACS-ECU connector C-301 for line-to-line short. Measure the resistance at joint connector (CAN1) C-105.

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-105 and ETACS-ECU connector C-301.

STEP 37. Check the wiring harness between joint connector (CAN1) C-105 and combination meter connector C-04 for open circuit.

CAUTION: Strictly observe the specified wiring harness repair procedure.

1. Disconnect joint connector (CAN1) C-105 and combination meter connector C-301, and check the wiring harness




2. Check the wiring harness between joint connector (CAN1) C-105 (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-105 (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-105 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-105 and KOS-ECU connector C-05 for open circuit.

1. Disconnect joint connector (CAN1) C-105 and KOS-ECU connector C-05, and check the wiring harness.




2. Check the wiring harness between joint connector (CAN1) C-105 (terminal 9) and KOS-ECU connector C-05 (terminal 1)

OK: Continuity exists (2 ohms or less)




3. Check the wiring harness between joint connector (CAN1) C-105 (terminal 22) and KOS-ECU connector C-05 (terminal 2)

OK: Continuity exists (2 ohms or less)

Q : Is the wiring harness between joint connector (CAN1) C-105 and KOS-ECU connector C-05 in good condition?

YES : Go to Step 40.

NO : Go to Step 49.

STEP 39. Check the wiring harness between joint connector (CAN1) C-105 and WCM connector C-07 for open circuit.

1. Disconnect joint connector (CAN1) C-105 and WCM connector C-07, and check the wiring harness.




2. Check the wiring harness between joint connector (CAN1) C-105 (terminal 7) and WCM connector C-07 (terminal 11)

OK: Continuity exists (2 ohms or less)




3. Check the wiring harness between joint connector (CAN1) C-105 (terminal 20) and WCM connector C-07 (terminal 10)
OK: Continuity exists (2 ohms or less)

Q : Is the wiring harness between joint connector (CAN1) C-105 and WCM connector C-07 in good condition?

YES : Go to Step 40.

NO : Go to Step 50.

STEP 40. Check the wiring harness between joint connector (CAN1) C-105 and SRS-ECU connector C-37 for open circuit.

1. Disconnect joint connector (CAN1) C-105 and SRS-ECU connector C-37, and check the wiring harness.




2. Check the wiring harness between joint connector (CAN1) C-105 (terminal 8) and SRS-ECU connector C-37 (terminal 15)

OK: Continuity exists (2 ohms or less)




3. Check the wiring harness between joint connector (CAN1) C-105 (terminal 21) and SRS-ECU connector C-37 (terminal 16)

OK: Continuity exists (2 ohms or less)

Q : Is the wiring harness between joint connector (CAN1) C-105 and SRS-ECU connector C-37 in good condition?

YES : Go to Step 41.

NO : Go to Step 51.
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