Symptom:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
When Monitored and Set Condition:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
When Monitored: At all times when battery power is supplied to the Instrument Cluster.
Set Condition: When the Instrument Cluster senses voltage to the passenger door lock
switch below .25 volts, the input circuit is not valid and this code will set.
POSSIBLE CAUSES
DTC PRESENT
DOOR LOCK SWITCH SHORTED
DOOR LOCK SWITCH MUX SHORTED
INSTRUMENT CLUSTER--PASSENGER DOOR LOCK SWITCH INPUT SHORTED
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, record and erase DTC’s.
With the DRBIIIt, read DTC’s.
Operate the door locks several times from the Passenger Door Lock Switch while
monitoring the DRBIIIt.
Does the DRBIIIt display PASS DOOR LOCK SW INPUT CIRCUIT SHORTED?
All
Yes → Go To 2
No → Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2 Disconnect the Door Lock Switch connector.
With the DRBIIIt in Sensors, read the PASS DOOR LOCK SW MUX circuit
Is the voltage above 4.6 volts?
All
Yes → Replace the Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Disconnect the Passenger Door Lock Switch connector.
Disconnect the Instrument Cluster C2. connector.
Measure the resistance between Passenger Door Lock Switch Mux circuit and
ground.
Is the resistance below 1000.0 ohms?
All
Yes → Repair the Passenger Door Lock Switch Mux circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 4
478
POWER DOOR LOCKS/RKE
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