Test D

PINPOINT TEST D: THE ANTI-THEFT SYSTEM DOES NOT OPERATE CORRECTLY - PATS IGNITION KEY TRANSPONDER SIGNAL IS NOT RECEIVED - DAMAGED KEY OR NON-PATS KEY

Test D1-D2:

Test D2-D4:

Normal Operation
During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the PCM. The PCM then compares this data with stored values to determine start enable.

Possible Causes
- PATS transceiver
- PCM
- electronic-encoded ignition key