Test Description

The numbers below refer to the step numbers on the diagnostic table.

2: This step determines if the condition is with the MIL control circuit or the ECM.

Malfunction Indicator Lamp (MIL) Always On

Step	Action	Yes	No
Schematic Reference: Engine Controls Schematics Connect End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views
1	Did you perform the Diagnostic System Check - Engine Controls?	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	IMPORTANT: Do not perform this diagnostic if there is a DTC set. Turn OFF the ignition. Disconnect the engine control module (ECM). Turn ON the ignition, with the engine OFF. Observe the MIL. Is the MIL illuminated?	Go to Step 3	Go to Step 5
3	Remove the driver information center (DIC)/clock. Refer to Clock Replacement in Instrument Panel, Gages, and Console. Test the MIL control circuit for a short to ground between the ECM and the DIC/clock. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 6	Go to Step 4
4	Replace the DIC/clock. Refer to Clock Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement?	Go to Step 6	-
5	Replace the ECM. Refer to Engine Control Module (ECM) Replacement . Did you complete the replacement?	Go to Step 6	-
6	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2