Test P: The Parking, Rear Or License Plate Lamps Are On Continuously
PINPOINT TEST P: THE PARKING, REAR OR LICENSE PLATE LAMPS ARE ON CONTINUOUSLYNormal Operation
The SJB sends a reference signal to the headlamp switch through circuit CLS34 (GY) to monitor for a parking lamp on request. When the headlamp switch is placed in the PARKING LAMPS ON position, the voltage signal is routed to ground. The SJB then energizes an internal relay, routing voltage through circuit CBP26 (BU/WH) to the rear and front parking lamps.
- DTC B1578 (Lamp Park Input Circuit Short to Ground) - is an on-demand DTC that sets when the SJB detects a short to ground from the parking lamp request input circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Headlamp switch
- SJB
P1-P3:
P4-P6:
