Pinpoint Test A: DTC B2103

Anti-Theft

Pinpoint Test A: DTC B2103

Normal Operation

- DTC B2103 (Antenna Not Connected) - sets when there has been a Passive Anti-Theft System (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.
- Connect the scan tool.
- 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


- 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. REFER to Electronic Engine Controls Service and Repair. PROGRAM the PATS keys into the PCM. REFER to Key Programming Using Diagnostic Equipment Key Programming 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.

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