2500-Pressure Regulator Valve Circuit Open: Notes
For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .
- When Monitored:
With the ignition on and the Boost Pressure Servo Motor command off.
- Set Condition:
The Engine Control Module (ECM) detects that the Boost Pressure Servo Motor Control circuit is open for two seconds.
| Possible Causes |
|---|
| FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE |
| BOOST PRESSURE SERVO MOTOR CONTROL CIRCUIT SHORTED TO GROUND |
| BOOST PRESSURE SERVO MOTOR CONTROL CIRCUIT OPEN OR HIGH RESISTANCE |
| BOOST PRESSURE SERVO MOTOR |
| ENGINE CONTROL MODULE (ECM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure .