Quick Test
- As a quick diagnosis, instrument cluster will perform a function check immediately after ignition is switched to RUN/START position. The electronic display, odometer and transmission range indicator, and all warning lights EXCEPT low fuel, cruise, high beam and fog lamps, will light for a brief period.
- If cluster is not receiving CCD bus messages, cluster will appear non-functional except for the continuously illuminated air bag indicator and NO BUS message displayed. If instrument cluster in not receiving CCD bus messages, proceed to the appropriate TESTS W/CODES - BODY CONTROL COMPUTER article in the ENGINE PERFORMANCE section.
CAUTION:
When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may
exist until computer systems have completed a relearn
cycle. See COMPUTER RELEARN PROCEDURES
article in the GENERAL
INFORMATION section before disconnecting battery.