Operation CHARM: Car repair manuals for everyone.

Test G: The Autolamps Are On Continuously

PINPOINT TEST G: THE AUTOLAMPS ARE ON CONTINUOUSLY


G1-G5:






G5-G7:






G8:






Normal Operation
With the headlamp switch turned to the AUTOLAMP position, a battery voltage signal is sent to the vehicle security module (VSM) through circuit 220 (VT/OG). The VSM then determines the amount of ambient light based on the input received from the light sensor. The input signal from the light sensor to the VSM is received through circuit 218 (WH/VT). When the ambient level has reached a point (determined by the internal programming of the VSM), 2 internal relays are energized to supply voltage to the exterior lamps. Circuit 875 (BK/LB) is the ground circuit for the light sensor.

DTC B1695 - sets when the VSM detects a short to voltage on the autolamp on input circuit.

DTC B1792 - sets when the VSM detects an open or short to voltage on the autolamp sensor input circuit.

Possible Causes
- Circuit 218 (WH/VT) open or short to voltage
- Circuit 220 (VT/OG) short to voltage
- Circuit 875 (BK/LB) open
- Light sensor
- Headlamp switch
- VSM