Check engine light on is an indication of codes stored
codes should indicate to troubled area
use an OBDII reader and get the codes
or try this
Begin the test with the ignition switch in the Off position.
Depress the odometer/trip odometer switch button.
While still holding the odometer/trip odometer switch button depressed, turn the ignition switch to the On position, but do not start the engine.
Release the odometer/trip odometer switch button.
The instrument cluster will automatically begin the actuator test sequence, as follows:
The cluster will turn on, then off again each of the PCI data bus message controlled indicators (except Airbag) to confirm the functionality of the indicator and the cluster control circuitry:
The cluster will sweep the needles for each of the gauges from minimum to maximum and back to minimum to confirm the functionality of the gauge and the cluster control circuitry:
Only on models with a premium version of the cluster, the cluster will illuminate the electroluminescent lamp and turn it off again to confirm the functionality of the lamp and the cluster control circuitry.
The cluster will sequentially step the odometer/trip odometer VFD display from all zeros (000000) through all nines (999999) to confirm the functionality of all VFD segments and their control circuitry, then display the software version number, followed by "DONE" if no codes
since you have codes it should list them
Wednesday, October 6th, 2010 AT 8:30 PM