Introduction:
The Detroit Diesel GHG17 Engine Aftertreatment Control Module (ACM) is an essential component of the engine management system. It plays a crucial role in monitoring and controlling various engine parameters to ensure optimal performance and emissions compliance. However, like any other electronic device, the ACM may encounter issues that require troubleshooting and repair. In this guide, we will address a specific fault code, PCC1302 Command fault code 154 intake manifold temperature OOR low warning, and provide a step-by-step solution to resolve the issue.
Preparations:
2023 InPower V14.5 V12 Diagnostic Software Free Download
Cummings Inline 6 Diagnostic Kit
Possible Causes:
Before proceeding with the diagnosis and repair process, it’s important to consider the potential causes of the fault code:
1. Faulty intake manifold temperature sensor connections
2. Faulty intake manifold temperature sensor
3. Faulty engine harness
4. Faulty extension harness
Diagnosis and Repair Guide:
1. Faulty intake manifold temperature sensor connections:
– Inspect the intake manifold temperature sensor and the harness connector pins.
– Disconnect the engine harness connector from the intake manifold temperature sensor.
– Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
– Check for evidence of moisture or dirt in the connector.
– Ensure the connector seals are intact and undamaged.
2. Faulty intake manifold temperature sensor:
– Check the resistance of the sensor.
– Disconnect the engine harness connector from the intake manifold temperature sensor.
– Measure the resistance between the intake manifold temperature signal pin and the intake manifold temperature return pin.
– Refer to the troubleshooting and repair manual for the specific engine platform for intake manifold temperature ranges.
– Check for a short circuit to engine block ground.
3. Faulty engine harness:
– Inspect the engine harness and the extension harness connector pins.
– Disconnect the engine harness from the extension harness.
– Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
– Check for evidence of moisture or dirt in the connector.
– Ensure the connector seals are intact and undamaged.
– Check for a short circuit from pin to pin.
– Disconnect the engine harness connector from the extension harness.
– Disconnect the engine harness from the intake manifold temperature sensor.
– Disconnect the engine harness from all sensors that have a shared return with the intake manifold temperature sensor.
– Measure the resistance from the intake manifold temperature return pin on the engine harness inline connector to all other pins in the engine harness inline connector.
– Measure the resistance from the intake manifold temperature signal pin on the engine harness inline connector to all other pins in the engine harness inline connector.
4. Faulty extension harness:
– Inspect the extension harness.
– Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
– Check for evidence of moisture or dirt in the connector.
– Ensure the connector seals are intact and undamaged.
– Check for a short circuit to engine block ground.
– Disconnect the extension harness from the engine harness.
– Measure the resistance from the intake manifold temperature signal pin on the extension harness connector to engine block ground.
– Measure the resistance from the intake manifold temperature return pin on the extension harness connector to engine block ground.
– Check for a short circuit from pin to pin AUX 105.
– Disconnect the extension harness from the engine harness.
– Measure the resistance from the intake manifold temperature return pin on the extension harness connector to all other pins in the extension harness connector.
– Measure the resistance from the intake manifold temperature signal pin on the extension harness connector to all other pins in the extension harness connector.
Conclusion:
By following the step-by-step guide outlined above, you can effectively diagnose and repair the PCC1302 Command fault code 154 intake manifold temperature OOR low warning on the Detroit Diesel GHG17 Engine Aftertreatment Control Module. Remember to refer to the specific troubleshooting and repair manual for your engine platform to ensure accurate measurements and ranges. Regular maintenance and prompt resolution of fault codes are essential to keep your engine running smoothly and efficiently.
