Component Tests and General Diagnostics

1. Check GAUGES Fuse 4 by visual inspection.
2. Always check terminal contact before replacing any component.
3. Ensure power door lock functions before beginning Remote Keyless Entry diagnosis.
4. Ensure Rear Endgate Window Release functions before beginning Keyless Entry diagnosis.
5. If door locks operate from the transmitter, but not from the door lock switches, check continuity of door lock switch and associated wiring for an open or a short. Repair/replace as necessary.
6. If a second transmitter is available, try it. If it works, remove the batteries and install them in the first transmitter. If the first transmitter still doesn't work, it is defective.
7. Check transmitter battery terminals. They should be clean and make good contact with the battery.
8. If in doubt as to the condition of the transmitter batteries, replace them with new ones. Measuring battery voltage with a DVM may show a weak battery as being good.