Reading and Clearing Diagnostic Trouble Codes

CAUTION: Be sure to apply parking brake and/or block wheels before performing idle check or adjustment, or any engine running tests.

Diagnostic Connector Location:

1. Connect the scan tool to the diagnostic connector located in the engine compartment near the Single Board Engine Controller II (SBEC II).
2. If possible, START the engine, turn ON the air conditioning, and shift the transmission selector through all of the gears, returning to PARK (A/T) or NEUTRAL (M/T). Turn OFF the air conditioning and shut OFF the engine.
3. Turn ON the ignition switch and observe the Wait-To-Start lamp. It should light for approx. 2 seconds then go out.
4. Using the DRB II or equivalent scan tool, go to the SELECT SYSTEM menu that looks like this:
1) ENGINE
2) TRANSMISSION
3) BODY
4) SUSPENSION
5) ABS
6) PASSIVE REST
7) THEFT ALARM


5. Select the ENGINE option. The following menu will appear:
1) WITH A/C
2) WITHOUT A/C



6. Select the appropriate option. The following menu will appear:
1) FUEL/IGNITION
2) CHARGING
3) SPEED CONTROL


7. Select the FUEL/IGNITION option. The following menu will appear:
1) SYSTEM TESTS
2) READ FAULTS
3) STATE DISPLAY
4) ACTUATOR TEST
5) ADJUSTMENTS



8. To delete existing fault messages, select the ADJUSTMENTS option. The following menu will appear:
1) ERASE FAULTS
2) RESET MEMORY
3) RESET EMR LIGHT
4) EMR MEMORY CHECK


9. Select ERASE FAULTS option to clear fault messages.