Description:

Error code ECU 001351.05 is triggered when the ECU detects that the circuit current for the compressor clutch for trailer air brakes is too low, indicating an open circuit. This condition can prevent the compressor clutch from engaging, affecting the operation of the trailer air brakes.

Reaction:

The ECU may limit or disable the function of the trailer air brakes, leading to limited or no braking capability for the trailer.

Recommendations:

• Inspect Wiring and Connectors: Check the wiring and connectors leading to the compressor clutch for signs of damage, corrosion, or loose connections that could cause low current readings.
• Measure Circuit Current: Use a multimeter to measure the current in the compressor clutch circuit. Low current readings confirm an open circuit.
• Check for Open Circuits: Inspect the wiring for any breaks or disconnects. Pay close attention to the harness and connectors.
• Test Compressor Clutch Operation: Verify that the compressor clutch is functioning correctly and engaging when the ECU sends the signal.
• Repair or Replace Faulty Components: Address any identified issues by repairing or replacing damaged wires, connectors, or the compressor clutch itself.
• Reset ECU and Verify Operation: After making the necessary repairs, reset the ECU to clear the error code and test the system to confirm that the compressor clutch operates correctly and no further errors are detected.

Note:

Maintaining proper current levels in the compressor clutch circuit is essential for reliable operation of the trailer air brakes. Regular inspections and timely repairs can help prevent open circuit issues and ensure safe braking performance.