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Home >> Mitsubishi >> 2008 >> Eclipse L4-2.4L (4G69) >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> Inspection Procedure I-7

Inspection Procedure I-7

INSPECTION PROCEDURE I-7: Headlight and Taillight: One of the headlights does not illuminate.

Headlights Circuit (Part 1):




Headlights Circuit (Part 2):






TECHNICAL DESCRIPTION (COMMENT)
If one of the headlights does not illuminate, a headlight bulb may be defective.

TROUBLESHOOTING HINTS
- The headlight bulb may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tools:
- MB991223: Harness Set
- MB992006: Extra Fine Probe

STEP 1. Check the headlight operation.

Q: Which of the headlights does not illuminate?

LH (low-beam and high-beam) : Go to Step 2.

RH (low-beam and high-beam) : Go to Step 5.

LH (only low-beam) : Go to Step 8.

RH (only low-beam) : Go to Step 11.

LH (only high-beam) : Go to Step 14.

RH (only high-beam) : Go to Step 17.

Low-beam only (both RH and LH) : Refer to INSPECTION PROCEDURE I-2 "The headlights (low-beam) do not illuminate normally." Inspection Procedure I-2

High-beam only (both RH and LH) : Refer to INSPECTION PROCEDURE I-3 "The headlights (high-beam) do not illuminate normally." Inspection Procedure I-3

High-beam indicator light : Refer to INSPECTION PROCEDURE I-8 "The high-beam indicator light does not illuminate." Inspection Procedure I-8

STEP 2. Check headlight (LH) connector A-18 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Is headlight (LH) connector A-18 in good condition?

YES : Go to Step 3.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Check that the headlights illuminate normally.

STEP 3. Check headlight (LH) bulb.

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Q: Is headlight (LH) bulb normal?

YES : Go to Step 4.

NO : Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

STEP 4. Check the wiring harness between headlight (LH) connector A-18 (terminal 2) and ground.






Q: Is the wiring harness between headlight (LH) connector A-18 (terminal 2) and ground in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.

STEP 5. Check headlight (RH) connector A-35 for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Is headlight (RH) connector A-35 in good condition?

YES : Go to Step 6.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Check that the headlights illuminate normally.

STEP 6. Check the headlight (RH) bulb.

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Q: Is headlight (RH) bulb normal?

YES : Go to Step 7.

NO : Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

STEP 7. Check the wiring harness between headlight (RH) connector A-35 (terminal 2) and ground.






Q: Is the wiring harness between headlight (RH) connector A-35 (terminal 2) and ground in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.

STEP 8. Check headlight (LH) connector A-18 and front-ECU connector A-13X for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Are headlight (LH) connector A-18 and front-ECU connector A-13X in good condition?

YES : Go to Step 9.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Check that the headlights illuminate normally.

STEP 9. Check headlight (LH) bulb.

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Q: Is headlight (LH) bulb normal?

YES : Go to Step 10.

NO : Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

STEP 10. Check the wiring harness between headlight (LH) connector A-18 (terminal 1) and front-ECU connector A-13X (terminal 6).






Q: Is the wiring harness between headlight (LH) connector A-18 (terminal 1) and front-ECU connector A-13X (terminal 6) in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.

STEP 11. Check headlight (RH) connector A-35 and front-ECU connector A-13X for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Are headlight (RH) connector A-35 and front-ECU connector A-13X in good condition?

YES : Go to Step 12.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Check that the headlights illuminate normally.

STEP 12. Check the headlight (RH) bulb.

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Q: Is headlight (RH) bulb normal?

YES : Go to Step 13.

NO : Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

STEP 13. Check the wiring harness between headlight (RH) connector A-35 (terminal 1) and front-ECU connector A-13X (terminal 6).






Q: Is the wiring harness between headlight (RH) connector A-35 (terminal 1) and front-ECU connector A-13X (terminal 6) in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.

STEP 14. Check headlight (LH) connector A-18 and front-ECU connector A-13X for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Are headlight (LH) connector A-18 and front-ECU connector A-13X in good condition?

YES : Go to Step 15.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Verify that the headlights illuminate normally.

STEP 15. Check headlight (LH) bulb.

1. Remove the headlight (LH) bulb.
2. Verify that the headlight (LH) bulb is not damaged or burned out.

Q: Is headlight (LH) bulb normal?

YES : Go to Step 16.

NO : Replace the headlight (LH) bulb. Verify that the headlights illuminate normally.

STEP 16. Check the wiring harness between headlight (LH) connector A-18 (terminal 3) and front-ECU connector A-13X (terminal 10).






Q: Is the wiring harness between headlight (LH) connector A-18 (terminal 3) and front-ECU connector A-13X (terminal 10) in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.

STEP 17. Check headlight (RH) connector A-35 and front-ECU connector A-13X for loose, corroded or damaged terminals, or terminals pushed back in the connector.






Q: Are headlight (RH) connector A-35 and front-ECU connector A-13X in good condition?

YES : Go to Step 18.

NO : Repair or replace the damaged component(s). Refer to General (Electrical), Harness Connector Inspection. Verify that the headlights illuminate normally.

STEP 18. Check the headlight (RH) bulb.

1. Remove the headlight (RH) bulb.
2. Verify that the headlight (RH) bulb is not damaged or burned out.

Q: Is headlight (RH) bulb normal?

YES : Go to Step 19.

NO : Replace the headlight (RH) bulb. Verify that the headlights illuminate normally.

STEP 19. Check the wiring harness between headlight (RH) connector A-35 (terminal 3) and front-ECU connector A-13X (terminal 10).






Q: Is the wiring harness between headlight (RH) connector A-35 (terminal 3) and front-ECU connector A-13X (terminal 10) in good condition?

YES : No action is necessary and testing is complete.

NO : The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.
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