Malfunction Indicator Lamp (MIL), Functional Check

Malfunction Indicator Lamp (MIL), Significance

Function Check
- Switch ON ignition
- Malfunction Indicator Lamp (MIL) must light- up.

If the Malfunction Indicator Lamp (MIL) does not light-up with ignition switched on:
- Check instrument cluster and MIL lamp wiring / MIL lamp bulb as follows:

If the MIL lights-up with ignition switched on, continue check as follows:
- Start engine and run at idle speed:
The MIL must go out after a few seconds.

If the MIL does not go out:
- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory, Diagnostic Trouble Code (DTC) memory. Refer to "DTC Memory Checking and Erasing" under "Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures/Displaying and Reading Trouble Codes/With Manufacturers Scan Tool" Testing and Inspection
- Read readiness code . If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must be generated again.
Refer to "Readiness Code, Displaying" under "Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures/Monitors, Trips and/or Drive Cycle" Testing and Inspection
Refer to "Readiness Code, Generating" under "Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures/Monitors, Trips and/or Drive Cycle" Testing and Inspection