Troubleshooting Hints - Exterior Lights
PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS1. Check the underhood junction block LP PK Fuse by visual inspection. If open, check for a short to ground in CKT 1640 (ORN).
2. Check the underhood junction block HDLP MaxiFuse(r) by visual inspection. If open. check for a short to ground in CKT 1242 (RED).
3. Check the underhood junction block SBM LCM Fuse by visual inspection. If open, check for a short to ground in CKT 39 (PNK).
4. If the LH park lamps are inoperative, check the IP junction block LP PK L Fuse by visual inspection. If open, check for a short to ground in CKT 709 (PPL).
5. If the RH park lamps are inoperative, check the IP junction block LP PK R Fuse by visual inspection. If open, check for a short to ground in CKT 309 (BRN/WHT).
6. If all turn signal lamps are inoperative during the turn signal and hazard functions, check the underhood junction block HZDT/SG Fuse by visual inspection. If open, check for a short to ground in CKT 540 (ORN).
7. If all turn signal lamps and cornering lamps are inoperative during both turn signal functions, check the underhood junction block T/SIG Fuse by visual inspection. If open, check for a short to ground in CKT 539 (PNK), CKT 57 (ORN), or CKT 58 (BLK).
8. If the stop lamps are inoperative, check the underhood junction block STOP Fuse by visual inspection. If open, check for a short to ground in CKT 640 (ORN) or CKT 20 (LT BLU).
9. If one turn indicator in the instrument cluster does not light, but turn lamps work, check bulb, connections, and wiring to indication
10. If the turn lamps stay on (do not flash) during the hazard function and both turn signal functions, replace the turn signal flasher.
11. If only one light does not operate. check bulb, socket, and related wiring (see schematic).
12. If a group of lights are inoperative, check common power and ground wiring (see schematic) to those bulbs. Also, check for proper terminal contact at the junction blocks and in-line connectors.
13. Check that grounds G105, G106, G202, G400, and G402 are clean and tight.
14. If the LH cornering lamp is inoperative during the LH turn signal function, but the turn signal lamps operate:
^ Check for an open in CKT 57 (ORN) between the LH cornering lamp and S200.
^ Check for an open in CKT 150 (BLK) between the LH cornering lamp and S110.
^ If all OK, replace the LH cornering lamp.
15. If the RH cornering lamp is inoperative during the RH turn signal function, but the turn signal lamps operate:
^ Check for an open in CKT 58 (BLK) between the RH cornering lamp and S201.
^ Check for an open in CKT 250 (BLK) between the RH cornering lamp and S109.
^ If all OK, replace the RH cornering lamp.
16. Before component replacement, check for poor connections at related component and in-line hamess connector terminal connections.
17. Check for broken (or partially broken) wire inside of the insulation which could cause a system malfunction but prove good in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
18. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.