System Inspection
- Operate engine to warm temperature. Ensure air temperature is above 113°F (45°C). Shut engine off. Connect voltmeter to pressure regulator control solenoid valve (Blue/Orange wire). See Fig 1 .
- Start engine and note voltage. Voltage should be below 2 volts for 1-4 minutes after engine is started, then increase to approximately 12 volts after 1-4 minutes.