ECU 002629.03 – Compressor Outlet Temperature Signal Out Of Range High. John Deere System Advisory.
ECU 002629.03 (ECU 2629.03)
Code: 002629.03
Shortcode: 2629.03
Description:
Error code ECU 002629.03 is triggered when the compressor outlet temperature signal is detected to be out of range high, indicating a short to 12 volts. This erroneous signal can imply overheating or an electrical fault in the compressor’s temperature monitoring circuit.
Reaction:
The ECU may respond by adjusting or limiting engine performance to prevent damage due to perceived overheating, which might not reflect actual physical conditions.
Recommendations:
- Inspect Temperature Sensor Wiring: Check for damaged wires or loose connections that could result in a short to 12 volts.
- Measure Voltage at Sensor: Use a multimeter to verify the voltage at the compressor outlet temperature sensor. Correct voltage should align with manufacturer specifications.
- Replace Faulty Sensor: If diagnostics confirm a fault with the temperature sensor itself, replace it to ensure accurate temperature readings.
- Check ECU Inputs and Outputs: Ensure that the ECU is processing and outputting signals correctly. Consider reprogramming or replacing the ECU if faults are detected.
- Reset ECU and Re-test: After repairs, reset the ECU to clear the fault code and conduct a test under operational conditions to ensure the issue is resolved.
Note:
Regular maintenance and checks of the sensor and wiring integrity can prevent false alarms and ensure accurate temperature monitoring.