Malfunction Indicator Lamp: Service and Repair

MALFUNCTION INDICATOR LAMP (MIL) RESET
To reset the MIL which includes the CHECK ENGINE, and SERVICE VEHICLE SOON indicators, read the diagnostic trouble codes through the use of the scan tool. No provisions exist for flash code diagnostics. Refer to the scan tool manual for specific directions or instructions for the scan tool.
The scan tool may allow the technician to perform the following steps:
1. Read the data list.
2. Read the current and history diagnostic trouble codes.
3. Clear the diagnostic trouble codes after a repair has been completed.
Ensure that the scan tool contains an updated cartridge before attempting to communicate with the instrument cluster. In order to use the scan tool, perform the following steps;
1. Connect the scan tool to the Data Link Connector (DLC).
2. Turn the ignition switch to the RUN position.
The scan tool reads the serial data sent from the instrument cluster serial data output terminal B1 to the DLC terminal 2.

CLEARING DTCs

SCAN TOOL METHOD
Select the DTCs for the diagnostic trouble codes. After the DTCs have been viewed completely, the scan tool will ask, CLEAR DTCs? Answer YES. The scan tool will read, HISTORY DATA WILL BE LOST. CLEAR DTCs? Answer YES. The DTCs cannot clear until all of the DTCs have been displayed.

IGNITION CYCLE DEFAULT
Any existing DTCs are automatically cleared from the instrument cluster if no diagnostic trouble codes occur for 100 drive cycles. A drive cycle occurs under the following conditions:
^ The ignition is turned to the run position.
^ the vehicle is driven faster than 16km/h.