Test B: DTC B2586 - Headlamp Mode Circuit Failure

PINPOINT TEST B: DTC B2586 - HEADLAMP MODE CIRCUIT FAILURE

B1:

B1-B2:

Normal Operation
Under normal operation, when the high beams are selected, the multifunction switch sends a ground signal to the smart junction box (SJB) through circuit 1394 (WH/RD). When the flash-to-pass feature is activated, the multifunction switch sends a ground signal to the SJB through circuit 1395 (RD/PK).

Possible Causes
- A short to ground in circuit 1394 (WH/RD) or 1395 (RD/PK)
- Multifunction switch
- Smart junction box (SJB)