Pinpoint Test L: DTC B2900

Anti-Lock Control

Pinpoint Tests

Pinpoint Test L: DTC B2900

Normal Operation

When the ignition is turned to the RUN position, the ABS module and the PCM share Vehicle Identification Number (VIN) information over the High Speed Controller Area Network (HS-CAN) bus.

- DTC B2900 VIN Mismatched - If the VIN information stored in the ABS module does not match the information transmitted by the PCM, DTC B2900 will set.

This pinpoint test is intended to diagnose the following:
- Module configuration
- ABS module



PINPOINT TEST L: DTC B2900

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L1 VERIFY THE PCM VIN


- Connect the scan tool.
- Ignition ON.
- Using the scan tool, carry out the Network Test.
- Enter the following diagnostic mode on the scan tool: Log Viewer.
- Compare the VIN in Log Viewer to the vehicle VIN plate.
- Does the VIN in Log Viewer match the vehicle VIN plate?

Yes
GO to L2.

No
RECONFIGURE the PCM. FOLLOW the instructions on the scan tool. CLEAR the DTCs. CYCLE the ignition key. REPEAT the self-test.

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L2 VERIFY THE ABS MODULE PART NUMBER


- Retrieve and record the ABS module part number from Log Viewer and verify that the vehicle has the correct ABS module installed.
- Is the correct ABS module installed in the vehicle?

Yes
CONFIGURE the ABS module. REFER to Information Bus, Programmable Module Installation (PMI) Using the Integrated Diagnostic System (IDS) When the Original Module is NOT Available. CLEAR the DTC. CYCLE the ignition key. REPEAT the self-test. Programming and Relearning

No
INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module Service and Repair. CLEAR the DTC. CYCLE the ignition key. REPEAT the self-test.

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