P0384-GLOW PLUG CONTROL MODULE CONTROL CIRCUIT HIGH





For a complete wiring diagram Refer to Section 8W



Possible Causes
INTERMITTENT DTC
(K202) GLOW PLUG MODULE CONTROL CIRCUIT SHORTED TO VOLTAGE
GLOW PLUG MODULE
ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)



Diagnostic Test

1. DTC IS ACTIVE

Ignition on, engine not running.
With the scan tool, clear DTCs in the Engine Control Module (ECM).
With the scan tool, actuate the Glow Plugs.
Monitor the scan tool for at least two minutes.
Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.
Start the engine.
Allow the engine to reach normal operating temperature.
Test drive the vehicle.
With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes


No

2. (K202) GLOW PLUG MODULE CONTROL CIRCUIT SHORTED TO VOLTAGE



Turn the ignition off.
Disconnect the Glow Plug Module harness connector.
Disconnect the Engine Control Module (ECM) harness connectors.
Turn the ignition on.
Measure the voltage of the (K202) Glow Plug Module Control circuit.

Is the voltage below 0.5 volt?

Yes


No