Dodge ZB 2005 - Bcm - Ignition Mux Switch Input Open

Symptom:
BCM - IGNITION MUX SWITCH INPUT OPEN
When Monitored and Set Condition:
BCM - IGNITION MUX SWITCH INPUT OPEN
When Monitored: Continuously.
Set Condition: When the BCM detects the ignition switch MUX circuit voltage is above
4.7 volts for at least 2 seconds.
POSSIBLE CAUSES
IGNITION SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
IGNITION SWITCH SENSE CIRCUIT OPEN
IGNITION SWITCH SENSE RETURN CIRCUIT OPEN
IGNITION SWITCH
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the voltage between the Ignition Switch Sense circuit and ground.
Is the voltage above 5.00 volts?
All
Yes → Repair the Ignition Switch Sense circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Ignition Switch Sense circuit between the BCM C4
connector and the Ignition Switch connector.
Is the resistance above 5.0 ohms?
All
Yes → Repair the Ignition Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Ignition Switch Sense Return circuit betweenthe BCM
C4 connector and the Ignition Switch connector.
Is the resistance above 5.0 ohms?
All
Yes → Repair the Sense Return circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 4
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IGNITION, POWER, ACCESSORY