LS V8-3.9L VIN A (2003)
Test T3-T4
Normal Operation
The instrument cluster monitors the headlamp switch position by sending out voltage reference signals to the headlamp switch. If a problem is detected
with the circuits to the headlamp switch, the instrument cluster will default the headlamps and parking lamps on. When the headlamp switch is in the
parking lamps ON position, the instrument cluster sends a signal to the front electronic module (FEM) and the rear electronic module (REM) to
illuminate the parking lamps.
Possible Causes
-
circuit 8-LF14 (WH/BU) open
-
headlamp switch
-
instrument cluster
Test U
PINPOINT TEST U: ONE OR MORE PARKING, REAR OR LICENSE LAMP IS INOPERATIVE
Test U1