Left Front Door Key Cylinder Arm Switch Failure

SYMPTOM
LEFT FRONT DOOR KEY CYL ARM switch FAILURE

WHEN MONITORED
Each switch inside the door has a unique resistance value which when activated sends a voltage level to the BCM. The BCM will interpret the different levels and perform the desired function.

SET CONDITION
The BCM senses a voltage of 4 volts (± 250 mV) on the LF door switch MUX circuit for longer than 8 seconds.

POSSIBLE CAUSES
- Driver door key cylinder switch malfunction
- Driver door key cylinder switch sticking
- Driver door key cylinder switch stuck in lock position