Pinpoint Test A: DTC B2103

Anti-Theft

Pinpoint Tests

Pinpoint Test A: DTC B2103

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) - an on-demand DTC that sets when the PCM detects 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

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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.

- Ignition OFF.
- Verify the PATS transceiver is correctly installed. Refer to Passive Anti-Theft System (PATS) Transceiver Service and Repair.
- Ignition ON.
- Clear the PCM DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the PCM DTCs.
- Is DTC B2103 retrieved?

Yes
INSTALL a new PATS transceiver. REFER to Passive Anti-Theft System (PATS) Transceiver Service and Repair. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. If the concern is still present, GO to A2.

No
The system is OK.

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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?

Yes
INSTALL a new PCM. PROGRAM the PATS keys into the PCM. REFER to Key Programming Using Diagnostic Equipment Using Diagnostic Equipment. REPEAT the self-test.

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.

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