Pinpoint Test AH: DTC U3002:62

Anti-Lock Control - Four-Channel

Pinpoint Tests

Pinpoint Test AH: DTC U3002:62

Refer to Wiring Diagram Set 42, Vehicle Dynamic Systems for schematic and connector information. Diagrams By Number

Normal Operation

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

- DTC U3002:62 (Vehicle Identification Number: Signal Compare Failure) - this DTC sets in continuous memory and indicates that the VIN message sent by the BCM over the HS-CAN does not match the VIN stored in the ABS module.

This pinpoint test is intended to diagnose the following:
- Module configuration (ABS and BCM)
- ABS module

PINPOINT TEST AH: DTC U3002:62

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AH1 VERIFY BCM VIN

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Log Viewer.
- Compare the VIN in Log Viewer to the vehicle VIN plate.
- Does VIN in Log Viewer match the vehicle VIN plate?

Yes
GO to AH2.

No
CARRY OUT Programmable Module Installation (PMI) for the BCM. REFER to Module Configuration Programmable Module Installation (PMI). TEST the system for normal operation.

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AH2 VERIFY 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
CARRY OUT PMI for the ABS module. REFER to Module Configuration Programmable Module Installation (PMI). TEST the system for normal operation.

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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