Pinpoint Test A: DTC B2103 - Antenna Not Connected

Normal Operation 

The passive anti-theft system (PATS) transceiver reads the PATS key when the key is turned to the START or ON position.

• DTC B2103 (Antenna Not Connected) - sets when there has been a PATS transceiver antenna failure. The PATS transceiver may need to be replaced.

This pinpoint test is intended to diagnose the following:

• PATS transceiver
• PCM

PINPOINT TEST A: DTC B2103 - ANTENNA NOT CONNECTED 

1. A1 INSPECT THE PATS TRANSCEIVER FOR CORRECT INSTALLATION 
   NOTE: Replacement of the PATS transceiver does not require the PATS keys to be programmed into the PCM again.
   • Key in OFF position.
   • Verify the PATS transceiver is correctly installed. Refer to Passive Anti-Theft System (PATS) Transceiver .
   • Connect the diagnostic tool.
   • Key in ON position.
   • Clear the PCM DTCs.
   • Key in OFF position.
   • Key in ON position.
   • Retrieve the PCM DTCs.
   • Is DTC B2103 retrieved? 
   1. YES  : INSTALL a new PATS transceiver. REFER to Passive Anti-Theft System (PATS) Transceiver . CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. If the concern is still present, Go to  A2.
   2. NO  : The system is OK.
2. A2 CHECK FOR CORRECT PCM OPERATION 
   NOTE: When a new PCM is installed, the PATS keys must be programmed into the PCM.
   • Disconnect all the PCM connectors.
   • Check for:
     • corrosion
     • damaged pins
     • pushed-out pins
   • Connect all the PCM connectors and make sure they seat correctly.
   • Operate the system and verify the concern is still present.
   • Is the concern still present? 
   1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS article. PROGRAM the PATS keys into the PCM. REFER to Key Programming Using Diagnostic Equipment . REPEAT the self-test.
   2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.