FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Mitsubishi >> 2012 >> Galant L4-2.4L (4G69) >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Flasher Timer >> Inspection Procedure I-3

Inspection Procedure I-3




INSPECTION PROCEDURE I-3: Flasher Timer: One of the turn-signal lights does not illuminate.


























TECHNICAL DESCRIPTION (COMMENT)

If the right or left turn-signal light does not illuminate, their bulb may be defective.

TROUBLESHOOTING HINTS

- The turn-signal light 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 Tool:

- MB991223: Harness Set
- MB992006: Extra Fine Probe

STEP 1. Check the hazard warning light.

Q. Which turn-signal light does not illuminate?

Front turn-signal light (LH) : Go to Step 2.
Front turn-signal light (RH) : Go to Step 8.
Rear combination light (LH) : Go to Step 14.
Rear combination light (RH) : Go to Step 20.
Turn-signal indicators : Refer to Inspection Procedure I-4 "The turn-signal light indicator does not illuminate normally Inspection Procedure I-4."
LH side only : Refer to Inspection Procedure I-1 "Turn-signal lights do not flash when the turn-signal light switch is turned on Inspection Procedure I-1."
RH side only : Refer to Inspection Procedure I-1 "Turn-signal lights do not flash when the turn-signal light switch is turned on Inspection Procedure I-1."
Both LH and RH sides : Refer to Inspection Procedure I-2 "Hazard warning lights do not flash when the hazard warning light switch is turned on Inspection Procedure I-2."
STEP 2. Check front combination light (LH) connector A-18 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is front combination light (LH) connector A-18 in good condition?

YES Go to Step 3.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 3. Check the front turn-signal light bulb (LH).

(1)Remove the front turn-signal (LH) light bulb.

(2)Verify that the front turn-signal light bulb (LH) is not damaged or burned out.

Q. Is the front turn-signal (LH) light bulb in good condition?

YES Go to Step 4.
NO Replace the front turn-signal (LH) light bulb. Verify that the turn-signal lights illuminate normally.
STEP 4. Check the ground circuit to the ETACS-ECU. Measure the resistance at front combination light (LH) connector A-18.





(1)Disconnect front combination light (LH) connector A-18 and measure the resistance available at the wiring harness side of the connector.





(2)Measure the resistance value between terminal 2 and ground.

- The resistance should be 2 ohms or less.

Q. Is the measured resistance 2 ohms or less?

YES Go to Step 6.

NO Go to Step 5.

STEP 5. Check the wiring harness between front combination light (LH) connector A-18 (terminal 2) and ground.

- Check the ground wire for open circuit.





Q. Is the wiring harness between front combination light (LH) connector A-18 (terminal 2) and ground in good condition?

YES Replace the front combination light socket (LH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 6. Check ETACS-ECU connector C-219 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-219 in good condition?

YES Go to Step 7.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 7. Check the wiring harness between front combination light (LH) connector A-18 (terminal 1) and ETACS-ECU connector C-219 (terminal 14).

- Check the communication lines for open circuit and short circuit.













NOTE:
Also check junction block connector C-214 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-214 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between front combination light (LH) connector A-18 (terminal 1) and ETACS-ECU connector C-219 (terminal 14) in good condition?

YES Replace the front combination light socket (LH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 8. Check front combination light (RH) connector A-34 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is front combination light (RH) connector A-34 in good condition?

YES Go to Step 9.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 9. Check the front turn-signal light bulb (RH).

(1)Remove the front turn-signal (RH) light bulb.

(2)Verify that the front turn-signal light bulb (RH) is not damaged or burned out.

Q. Is the front turn-signal (RH) light bulb in good condition?

YES Go to Step 10.
NO Replace the front turn-signal (RH) light bulb. Verify that the turn-signal lights illuminate normally.
STEP 10. Check the ground circuit to the front combination light (RH).
Measure the resistance at front combination light (RH) connector A-34.





(1)Disconnect front combination light (RH) connector A-34 and measure the resistance available at the wiring harness side of the connector.





(2)Measure the resistance value between terminal 2 and ground.

- The resistance should be 2 ohms or less.

Q. Is the measured resistance 2 ohms or less?

YES Go to Step 12.

NO Go to Step 11.

STEP 11. Check the wiring harness between front combination light
(RH) connector A-34 (terminal 2) and ground.

- Check the ground wire for open circuit.





Q. Is the wiring harness between front combination light (RH) connector A-34 (terminal 2) and ground in good condition?

YES Replace the front combination light socket (RH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 12. Check ETACS-ECU connector C-219 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-219 in good condition?

YES Go to Step 13.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 13. Check the wiring harness between front combination light
(RH) connector A-34 (terminal 1) and ETACS-ECU connector C-219 (terminal 9).

- Check the communication lines for open circuit and short circuit.













NOTE:
Also check junction block connector C-214 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-214 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between front combination light (RH) connector A-34 (terminal 1) and ETACS-ECU connector C-219 (terminal 9) in good condition?

YES Replace the front combination light socket (RH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 14. Check rear combination light (LH) connector F-17 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is rear combination light (LH) connector F-17 in good condition?

YES Go to Step 15.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 15. Check the rear turn-signal light bulb (LH).

(1)Remove the rear turn-signal (LH) light bulb.

(2)Verify that the rear turn-signal light bulb (LH) is not damaged or burned out.

Q. Is the rear turn-signal (LH) light bulb in good condition?

YES Go to Step 16.
NO Replace the rear turn-signal (LH) light bulb. Verify that the turn-signal lights illuminate normally.
STEP 16. Check the ground circuit to the rear combination light (LH).
Measure the resistance at rear combination light (LH) connector F-17.





(1)Disconnect rear combination light (LH) connector F-17 and measure the resistance available at the wiring harness side of the connector.





(2)Measure the resistance value between terminal 2 and ground.

- The resistance should be 2 ohms or less.

Q. Is the measured resistance 2 ohms or less?

YES Go to Step 18.

NO Go to Step 17.

STEP 17. Check the wiring harness between rear combination light (LH) connector F-17 (terminal 2) and ground.

- Check the ground wire for open circuit.





Q. Is the wiring harness between rear combination light (LH) connector F-17 (terminal 2) and ground in good condition?

YES Replace the rear combination light socket assembly (LH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 18. Check ETACS-ECU connector C-219 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-219 in good condition?

YES Go to Step 19.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 19. Check the wiring harness between rear combination light (LH) connector F-17 (terminal 3) and ETACS-ECU connector C-219 (terminal 14).

- Check the communication lines for open circuit and short circuit.













NOTE:
Also check junction block connector C-204 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-204 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between rear combination light (LH) connector F-17 (terminal 3) and ETACS-ECU connector C-219 (terminal 14) in good condition?

YES Replace the rear combination light socket assembly (LH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 20. Check rear combination light (RH) connector F-12 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is rear combination light (RH) connector F-12 in good condition?

YES Go to Step 21.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 21. Check the rear turn-signal light bulb (RH).

(1)Remove the rear turn-signal (RH) light bulb.

(2)Verify that the rear turn-signal light bulb (RH) is not damaged or burned out.

Q. Is the rear turn-signal (RH) light bulb in good condition?

YES Go to Step 22.
NO Replace the rear turn-signal (RH) light bulb. Verify that the turn-signal lights illuminate normally.
STEP 22. Check the ground circuit to the rear turn-signal light (RH).
Measure the resistance at rear combination light (RH) connector F-12.





(1)Disconnect rear combination light (RH) connector F-12 and measure the resistance available at the harness side of the connector.





(2)Measure the resistance value between terminal 2 and ground.

- The resistance should be 2 ohms or less.

Q. Is the measured resistance 2 ohms or less?

YES Go to Step 24.

NO Go to Step 23.

STEP 23. Check the wiring harness between rear combination light (RH) connector F-12 (terminal 2) and ground.

- Check the ground wire for open circuit.





Q. Is the wiring harness between rear combination light (RH) connector F-12 (terminal 2) and ground in good condition?

YES Replace the rear combination light socket assembly (RH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

STEP 24. Check ETACS-ECU connector C-219 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-219 in good condition?

YES Go to Step 25.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the turn-signal lights illuminate normally.

STEP 25. Check the wiring harness between rear combination light (RH) connector F-12 (terminal 3) and ETACS-ECU connector C-219 (terminal 9).

- Check the communication lines for open circuit and short circuit.













NOTE:
Also check junction block connector C-204 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-204 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between rear combination light (RH) connector F-12 (terminal 3) and ETACS-ECU connector C-219 (terminal 9) in good condition?

YES Replace the rear combination light socket assembly (RH). Verify that the turn-signal lights illuminate normally.

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 turn-signal lights illuminate normally.

pro multis Credits:Operation CHARM About Operation CHARM