U0402

U0402 - Implausible Data Received from Transmission Control Module

For a complete wiring diagram, refer to.

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

• Set Condition: When the anti lock brake module detects an incorrect CAN message from the transmission control module.






Test Step 1 - Test if TIPM Can Bus DTCs are Present

• With the scan tool, read TIPM DTCs.

Are there any TIPM CAN Bus DTCs present?

Yes

• Refer to Totally Integrated Power Module - Diagnosis and Testing, refer to => Engine DTC-Based Diagnostics.

No

• Go to Test Step 2 => [ Test Step 2 - Test if Transmission DTCs are Present ]

Test Step 2 - Test if Transmission DTCs are Present

• With the scan tool, read Transmission DTCs.

Are there any Transmission DTCs present?

Yes

• Refer to the Transmission Electrical Diagnostics. Refer to => Transmission DTC-Based Diagnostics.

No

• Using the schematics as a guide, test the anti lock brake 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.

• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test