2376-EGR Airflow Throttle Control Circuit Performance: Notes
For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .
- When Monitored:
With the engine running and the EGR Airflow Control Valve Motor command on.
- Set Condition:
The Engine Control Module (ECM) detects an implausible voltage on the EGR Airflow Control Valve Motor Control circuit.
| Possible Causes |
|---|
| INTERMITTENT DTC |
| EGR AIRFLOW CONTROL VALVE MOTOR (+) CIRCUIT SHORTED TO VOLTAGE |
| EGR AIRFLOW CONTROL VALVE MOTOR (-) CIRCUIT SHORTED TO VOLTAGE |
| EGR AIRFLOW CONTROL VALVE MOTOR (+) CIRCUIT SHORTED TO GROUND |
| EGR AIRFLOW CONTROL VALVE MOTOR (+) CIRCUIT SHORTED TO EGR AIRFLOW CONTROL VALVE MOTOR (-) CIRCUIT |
| EGR AIRFLOW CONTROL VALVE MOTOR (+) CIRCUIT OPEN OR HIGH RESISTANCE |
| EGR AIRFLOW CONTROL VALVE MOTOR (-) CIRCUIT OPEN OR HIGH RESISTANCE |
| EGR AIRFLOW CONTROL VALVE |
| ENGINE CONTROL MODULE (ECM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure