With Manufacturer's Scan Tool

Malfunction Indicator Lamp (MIL), Functional Check

- Turn on ignition.
The Malfunction Indicator Lamp (MIL) must tight up.

If the Malfunction Indicator Lamp (MIL) does not light up with the ignition turned on:

- Check MIL lamp wiring / MIL lamp bulb using wiring diagram.

If OK:

- Check instrument cluster/ECM, and replace if necessary.

- Check DTC memory. If necessary, repair any malfunctions and then erase DTC memory.
Reading Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes

- Read-out the readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If the DTC memory has been erased or the engine control module was disconnected from permanent positive, generate the readiness code again. Monitors, Trips, Drive Cycles and Readiness Codes

If the Malfunction Indicator Lamp (MIL) lights up with the ignition turned on, continue check as follows:

- Start engine and run at idle.
The Malfunction Indicator Lamp (MIL) must go out after a few seconds.

If the Malfunction Indicator Lamp (MIL) does not go out:

- Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
Reading Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes

If no DTCs are stored:

- Check MIL lamp wiring using wiring diagram.

If OK:

- Check instrument cluster/ECM, and replace if necessary.

- Check DTC memory. If necessary, repair any malfunctions and then erase DTC memory.
Reading Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes

- Read-out the readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If the DTC memory has been erased or the engine control module was disconnected from permanent positive, generate the readiness code again. Monitors, Trips, Drive Cycles and Readiness Codes