Keyless Entry Transmitter: Testing and Inspection

Before proceeding in diagnosis, check the transmitter for battery voltage and a good ground at the transmitter harness connector.
- The unit may not have been trained correctly, try retraining the transmitter.
- The batteries in the hand-held transmitter may be dead.
- Rotate your hand-held transmitter end-over-end and train again. For best results, place the end opposite from the battery compartment against the universal transmitter while training.
- The frequency of the hand-held transmitter may not be in the desired frequencies between 286 MHz and 399 MHz set by FCC.