Visual & Operational Inspection

Before performing tests, perform a visual inspection of the following items:

• Inspect BCM POWER fuse (10-amp) for an open. If fuse is open, check Orange wire for a short to ground between fuse block and BCM.
• Inspect BCM ACC fuse (10-amp) for an open. If fuse is open, check Yellow wire for a short to ground between fuse block and BCM.
• Inspect DOOR LOCKS fuse (20-amp) for an open. If fuse is open, check Orange wire for a short to ground between fuse block and door lock relay.
• Inspect ground located on right side of steering column.
• Inspect ground located near left door sill, forward of left front seat.
• Inspect ground located under left side of dash, left of steering column.
• Inspect door lock system for mechanical binding.
• If one actuator does not operate properly, but other actuators operate normally, inspect wiring to suspect actuator. If wiring is okay, check for a poor connection. If no poor connections are found, replace suspect actuator.
• Each door lock actuator contains an electronic circuit breaker. Resistance in door lock actuator will increase if door lock actuator is overloaded. Resistance will return to normal after voltage is removed from actuator terminals. Check for a broken or partially broken wire inside wire insulation which could cause a system malfunction but check good during a continuity or voltage check.
• Always check terminal contact before replacing any component.
• Inspect for proper installation of aftermarket electronic equipment which may affect system operation.