Test B: The Headlamps On Warning Chime Is Inoperative
PINPOINT TEST B: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVENormal Operation
When the key is inserted into the ignition lock cylinder, the key-in-ignition switch (part of the ignition switch) closes and routes a voltage signal to the instrument cluster (IC) through circuit 1414 (LG/VT). When the ignition key is not inserted into the ignition lock cylinder, the driver door is ajar and the headlamps are on, the smart junction box (SJB) sends a message to the instrument cluster (IC) over the medium speed controller area network (MS-CAN). The instrument cluster (IC) interprets this signal and sounds the headlamps on warning chime.
This pinpoint test is intended to diagnose the following:
- SJB
