Quick Test
- As a quick diagnosis, instrument cluster will perform a function check immediately after ignition is switched to RUN/START position. Electronic display, odometer/transmission range indicator and all warning lights EXCEPT low fuel, cruise, high beam, fog lamps and turn signal 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, see appropriate VEHICLE COMMUNICATIONS article.
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 GENERAL
INFORMATION before disconnecting battery.