Test B: DTCs B2009 and U2510 - Data Mismatch (Received Data Does Not Match What Was Expected)

PINPOINT TEST B: DTCs B2009 AND U2510 - DATA MISMATCH (RECEIVED DATA DOES NOT MATCH WHAT WAS EXPECTED)

B1:

B2:

Normal Operation
The transceiver module communicates with the passive anti-theft system (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 transmission enable. The PCM initiates the key interrogation sequence when the key is inserted in the ignition switch and when the ignition switch is turned to the RUN or START position.

DTC B2009 - sets when there is an indication of a communication issue between the PCM and transmission control module (TCM). This DTC cannot be caused by the PATS key, the PATS transceiver or the circuits between the PATS transceiver and PATS control. Whenever PATS has the DTC B2009 stored, there should be a DTC P1260, Theft Detected-Engine Disabled, stored in the TCM. Verify that DTC P1260 is stored in the TCM. If the DTC P1260 is not stored in the TCM, there is a power up issue for the PCM or the TCM. (i.e. PATS is powering up at key ON/START, but the TCM is not. Therefore, PATS tries to communicate over circuits 914 and 915 and there is no response from the PCM.) Make sure that the PCM and TCM power and ground circuits are functioning. Make sure that the scan tool can communicate with the PCM and the TCM.

DTC U2510 - sets when there has been a data mismatch between the PCM and the TCM IDs or they have not been sent.

Possible Causes
- PCM calibration
- Transmission control module (TCM) calibration
- PCM
- TCM