U0141: Diagnosis and Testing

U0141 - Lost Communication with Totally Integrated Power Module

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON. Battery voltage between 10 and 16 volts. Ignition off draw fuse installed. Totally integrated power module is configured correctly.

• Set Condition: Bus messages not received from the TIPM for approximately 2 to 5 seconds.






Test Step 1 - Verify the DTC is Active

• Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

• With the scan tool, read active DTCs.

Is this DTC active?

Yes

• Go to Test Step 2.

No

• Refer to the Stored Lost Communication DTCs procedure. Refer to => Non-DTC Based Diagnostics.

Test Step 2 - Test for Any of the Following Active DTCs

• With the scan tool, read all active DTCs from all modules.

• Test for TIPM configuration, CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

Does the scan tool display any active DTCs for the conditions listed?

Yes

• Perform the appropriate diagnostic procedure.

No

• Go to Test Step 3.

Test Step 3 - Verify the TIPM Is Active on the Bus

• Turn the ignition ON.

• With the scan tool, select network diagnostics.

• Verify that the TIPM is active on the bus.

Is the TIPM active on the bus?

Yes

• Go to Test Step 4.

No

• Perform the No Response Diagnostic Procedure. Refer to => Non-DTC Based Diagnostics.

Test Step 4 - Test for Additional Communication Related DTCs

• With the scan tool, select network diagnostics.

Is there more than one module with Active DTCs logged against the TIPM?

Yes

• Replace/update the totally integrated power module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Replace/update the module that set this DTC.

• Perform the appropriate Verification Test.