Liftgate Door Mux Circuit Shorted to Ground

Tests 779 - 780:

SYMPTOM
LIFTGATE DOOR MUX CIRCUIT SHORT TO GROUND

WHEN MONITORED
Anytime battery voltage is above 10 volts and BCM is awake. 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 below 4 volts on the liftgate switch MUX circuit.

POSSIBLE CAUSES
- Liftgate switch MUX circuit shorted to ground
- Liftgate switch circuit intermittent shorted to ground
- Liftgate door switch MUX circuit at BCM defective