Visual Inspection Chart
Mechanical
Electrical
- Binding latches
- Door lock cylinder
- Misaligned door
- Lock actuator
- Fuse
- Relays
- Switch
- Wiring harness
- Loose or corroded connections
Symptom Chart
Condition
Possible Sources
Action
- The door lock is inoperative
- Circuitry.
- Power door lock actuator (218A42).
PINPOINT TEST A: THE DOOR LOCK IS INOPERATIVE
CONDITIONS
DETAILS/RESULTS/ACTIONS
A1 CHECK THE OPERATION OF THE SUSPECT DOOR LOCK
Check for binding or stuck conditions by manually operating the inoperative door lock.
- Is the lock stuck or binding?
Yes
REPAIR or REPLACE the binding components. TEST the system for normal operation.
No
GO to A2 .
A2 CHECK THE POWER DOOR LOCK ACTUATOR FOR LOCK OPERATION — CIRCUIT 117 (PK/BK)
Inoperative Power Door Lock Actuator
Measure the voltage at the inoperative power door lock actuator connector Pin 1, Circuit 117 (PK/BK), and ground while operating the door lock switch to the LOCK position.
- Is the voltage greater than 10 volts?
Yes
GO to A3 .
No
REPAIR Circuit 117 (PK/BK). TEST the system for normal operation.
A3 CHECK THE POWER DOOR LOCK ACTUATOR FOR UNLOCK OPERATION — CIRCUIT 118 (PK/O)/163 (R/O)
Measure the voltage at the inoperative power door lock actuator connector Pin 2, Circuit 118 (PK/O) or 163 R/O, and ground while operating the door lock switch to the UNLOCK position.
- Is the voltage greater than 10 volts?
Yes
INSTALL a new power door lock actuator. TEST the system for normal operation.
No
REPAIR Circuit 118 (PK/O) and/or 163 (R/O). TEST the system for normal operation.