P0384-GLOW PLUG CONTROL MODULE CONTROL CIRCUIT HIGHFor a complete wiring diagram Refer to Section 8WWhen Monitored:With the ignition on.Set Condition:The ECM detects a short to voltage on the (K202) Glow Plug Module Control circuit for 0.5 second.
Possible CausesINTERMITTENT DTC(K202) GLOW PLUG MODULE CONTROL CIRCUIT SHORTED TO VOLTAGEGLOW PLUG MODULEENGINE CONTROL MODULE (ECM)
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)Diagnostic Test1.DTC IS ACTIVEIgnition 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?YesGo To 2NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING)2.(K202) GLOW PLUG MODULE CONTROL CIRCUIT SHORTED TO VOLTAGETurn 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?YesReplace the Glow Plug Control Module.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRepair the (K202) Glow Plug Module Control circuit for a short to voltage.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)