Test D: DTCs B1600 and B2431 - The Passive Anti-Theft System (PATS) Ignition Key Transponder Signal Is Not Received or

PINPOINT TEST D: DTCS B1600 AND B2431 - THE PASSIVE ANTI-THEFT SYSTEM (PATS) IGNITION KEY TRANSPONDER SIGNAL IS NOT RECEIVED OR THE TRANSPONDER PROGRAMMING FAILED (DAMAGED KEY OR NON-PATS KEY)

D1-D3:

Normal Operation
The PATS transceiver communicates with the PATS key. The control functions are contained in the powertrain control module (PCM). The PCM carries out all of the PATS functions such as receiving the identification code from the PATS key and controlling engine and transaxle enable. The PCM initiates the key interrogation sequence when the key is inserted in the ignition lock cylinder and when the ignition switch is turned to the RUN or START position.

Possible Causes
- PATS transceiver
- PATS key
- PCM