Without Scan Tool

Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) is intended to alert the driver of malfunctions of any coded components.

If such a fault occurs, the processor will substitute a value or values and continue operating. This process is called Fail Safe Mode. In some cases this action may result in a slight change in driveability.

System OK
The Malfunction Indicator Lamp (MIL) will remain on while the key is in the ON position, and go off once the vehicle has started.

System Not OK
If the Malfunction Indicator Lamp (MIL) remains on, after the vehicle starts, perform the Diagnostic Test Mode and the MIL will flash the Diagnostic Trouble Codes (DTCs). If the MIL never comes on, go to EEC Pinpoint Test-A-No Start. A - No Start





Retrieving Diagnostic Trouble Codes (DTC) Without a Scan Tool

The diagnostic connector is used to activate the malfunction indicator light (MIL) when the New Generation STAR (NGS) Tester or equivalent is not available.

1. Key OFF.
2. Locate the diagnostic connector, and disconnect the harness connectors.
3. Key ON.
4. Using a suitable jumper wire, connect Pin 3 to Pin 6.
5. After two seconds remove jumper wire and reconnect diagnostic connectors.