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Symptom: PASSENGER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO When Monitored and Set Condition: PASSENGER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE When Monitored: At all times when battery power is supplied to the Body Control Module. Set Condition: When the BCM senses voltage to the door lock switch above 4.6 volts for over 10 seconds. POSSIBLE CAUSES DTC PRESENT BODY CONTROL MODULE - PASSENGER DOOR LOCK SWITCH VOLTAGE LOW DOOR LOCK SWITCH GROUND OPEN DOOR LOCK SWITCH MUX OPEN DOOR LOCK SWITCH OPEN DOOR LOCK SWITCH MUX SHORT TO VOLTAGE BODY CONTROL MODULE - DOOR LOCK SWITCH MUX SHORT TO VOLTAGE TEST ACTION APPLICABILITY 1 With the DRBIII t, record and erase DTC’s. Cycle the ignition from ON to OFF to ON. t, read DTC’s. Remove the key and operate the door locks several times from the Passenger Door t. Does the DRBIII t display PASS DOOR LOCK SW INPUT OPEN OR SHORT TO VOLTAGE? All Yes → Go To 2 No → Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. 2 With the DRBIII t in Sensors, read the PASS DOOR LOCK SW voltage. Does the DRBIII t display 4.0 volts or greater? All Yes → Go To 3 No → Disconnect the BCM harness connector(s). Check connectors - Clean/repair as necessary. If okay, replace the Body Control 779 POWER DOOR LOCKS/RKE |