Exterior Lighting: Headlamps
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B1342 | ECU is Defective | CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation. |
| B2501 | LF Low Beam Circuit Failure | If the low beam is inoperative, go to Pinpoint Test B
. If the low beam is always on, go to Pinpoint Test C . |
| B2503 | RF Low Beam Circuit Failure | If the low beam is inoperative, go to Pinpoint Test B
. If the low beam is always on, go to Pinpoint Test C . |
| B2586 | Headlamp Mode Select Circuit Failure | Go to Pinpoint Test A . |
| B2598 | Headlamp Relay Circuit Failure | If the high beams are inoperative, go to Pinpoint Test A
. If the high beams are always on, go to Pinpoint Test C . |
| All other DTCs | - | REFER to MULTIFUNCTION ELECTRONIC MODULES article. |