Test C: PATS Received Incorrect Key-Code From Ignition Key Transponder

PINPOINT TEST C: PATS RECEIVED INCORRECT KEY-CODE FROM IGNITION KEY TRANSPONDER

C1-C3:

Test C4-C6:

Normal Operation
During each vehicle start sequence, the powertrain control module (PCM) queries the encoded key and compares the information with the key information stored in the PCM memory. The PCM then enables the starting functions of the engine. The transceiver provides the interface between the encoded ignition key and the PCM.

Possible Causes
- passive anti-theft system (PATS) transceiver
- PCM
- PATS key