The CEL can indicate various problems and new ones could have occurred so it is best to retrieve the trouble codes and find out the cause.
Here are the procedures for retrieving and clearing trouble codes.
TROUBLE CODE ACCESS
1. Engine must be at normal operating temperature. Using jumper wire, ground Green 1-pin check connector. The check connector is on the right side fenderwell, near the fuel filter and the Green, 6-pin self-diagnostic connector.
NOTE: ECU constantly checks for malfunction of input devices. However, ECU only checks output devices for 3-second period after ignition is turned on and Green check connector is grounded.
2. Turn the ignition to ON position. The codes may be read by counting the number of pulses of the Malfunction Indicator Light (MIL). MIL is under the engine symbol marked CHECK in the center of the instrument cluster.
3. The code will repeat or other codes will flash, if more than one is stored. See Fig. 3.
4. If there is more than one code stored, the LOWEST numbered code will be displayed first. Remaining codes are displayed in order from lowest to highest. Refer to appropriate TROUBLE CODE IDENTIFICATION chart for diagnostic procedure.
1. Disconnect negative battery cable. Depress brake pedal for at least 5 seconds. Reconnect battery cable.
2. Ground test connector with jumper wire. Turn ignition on, but do not start engine for 6 seconds.
3. Start engine and run at 2000 RPM for 2 minutes. Verify no codes are displayed.
Images (Click to enlarge)
Friday, January 28th, 2011 AT 1:22 PM