Power Locks: Testing and Inspection

Power Lock And Remote Keyless Entry System
As a preliminary diagnosis for the power lock and remote keyless entry systems, note the system operation while you actuate both the Lock and Unlock functions with the power lock switches and the remote keyless entry transmitter. Then, proceed as follows:
If the system fails to function with either the switches or the transmitter or if illuminated entry fails to operate, see the Body and Frame/Keyless Entry Module/Power Lock and Remote Keyless Entry Module diagnosis.
- If the system functions with both switches, but not with the transmitter, see the Remote Keyless Entry Transmitter diagnosis.
- If the system functions with the transmitter, but not with one or both switches, see the Power Lock Switch diagnosis.
- If one lock fails to operate with the switches or the transmitter, see the Power Lock Motor diagnosis.

Circuit Breaker
1. Locate the correct circuit breaker in the fuse-block module. Pull out the circuit breaker slightly, but be sure that the terminals still contact the terminals in the fuseblock module.
2. Connect the negative lead of a 12-volt DC voltmeter to a good ground.
3. With the voltmeter positive lead, check both terminals of the circuit breaker for battery voltage.

If only one terminal has battery voltage, the circuit breaker is faulty and must be replaced. If neither terminal has battery voltage, repair the open circuit from the Power Distribution Center (PDC) as required.