Liftgate Key Cylinder Arm Switch Failure

Tests 1 - 3:

SYMPTOM
LIFTGATE 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 4.0 volts (± 250 mV) on the liftgate switch MUX circuit for longer than 8 seconds.

POSSIBLE CAUSES
- Liftgate key cylinder switch lock malfunction
- Liftgate key cylinder switch sticking
- Liftgate key cylinder switch stuck in LOCK position