Antilock Brake Module (ABS)

U0402-00-IMPLAUSIBLE DATA RECEIVED FROM TCM

For a complete wiring diagram, refer to the Wiring Information.

NOTE:
Check for DTCs in the associated module before continuing with this diagnostic procedure.

- When Monitored:
Continuously with the ignition on, one valid CAN message received at least once, and no U0002-88-CAN C Bus Off Performance DTC present.

- Set Condition:
When the Anti-Lock Brake Module detects an incorrect CAN message from the Powertrain Control Module (PCM).





Diagnostic Test

1. VERIFY DTC IS ACTIVE

NOTE: This DTC must be active for the results of this test to be valid.

1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Turn the ignition on.
3. With the scan tool, record and erase the DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read the DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test.

2. CHECK IF POWERTRAIN CONTROL MODULE DTCS ARE PRESENT
1. With the scan tool, read PCM DTCs.

Are there any PCM DTCs present?

Yes

- Perform the appropriate diagnostic procedures. Testing and Inspection.

No

- Go To 3

3. CHECK OTHER MODULES FOR CAN BUS DTCS
1. With the scan tool, read the DTCs.

Are there any CAN BUS DTCs present?

Yes

- Using the schematics as a guide, check the Powertrain Control Module (PCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Powertrain Control Module (PCM). Powertrain Control Module - Removal.

No

- Using the schematics as a guide, check the Anti-Lock Brake System (ABS) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-Lock Brake Module. Anti-Lock Brake System Module - Removal.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.