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 START or ON.

- DTC B2103 (Antenna Not Connected) - sets in continuous memory and on-demand when there has been a PATS transceiver antenna failure.

This pinpoint test is intended to diagnose the following:

- PATS transceiver
- Instrument Cluster (IC)



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 IC 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 IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC 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 DTC B2103 is retrieved again, GO to A2.

No
The system is OK.

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A2 CHECK FOR CORRECT IC OPERATION


- Disconnect all the IC connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the IC 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 IC. REFER to Instrument Panel, Gauges and Warning Indicators. RESET the parameters in both the IC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset Passive Anti-Theft System (PATS). PROGRAM the PATS keys into the new IC. REFER to Key Programming Using Diagnostic Equipment Using Diagnostic Equipment. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.

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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