Ignition MUX Switch Input Short

Test 1-2:

Test 3-4:

SYMPTOM
IGNITION MUX SWITCH INPUT SHORT

WHEN MONITORED
With the ignition on and battery voltage greater than 10.4 volts.

SET CONDITION
The ignition MUX sense circuit voltage at the BCM goes below 0.5 volts for more than 2 seconds.

POSSIBLE CAUSES
- Ignition switch shorted
- Ignition switch sense circuit shorted to ground
- Ignition switch sense circuit shorted to ignition switch sense return circuit
- Ignition switch sense return circuit shorted to ground
- Body control module