Self-Diagnosis Function Checks

NOTE:
While in the self-diagnosis mode, the dash lights brightness controller operates normally.
While in the self-diagnosis mode, the trip/reset button is used to start the Beeper Drive Circuit Test and the Gauge Drive Circuit Check.
GIf the vehicle speed exceeds 1.2 mph (2 km/h) or the ignition switch is turned OFF, the self-diagnosis mode ends.

The Beeper Drive circuit check:
When entering the self-diagnosis mode, the beeper sounds five times.

The Indicator Drive circuit check:
When entering the self-diagnosis mode, these indicator lights blink:
Seat belt indicator light, Door indicator light, Brake system light, Charging system light, Low fuel indicator light, Maintenance required indicator light, Washer fluid level indicator light (Canada), Tailgate indicator light, A/T gear position Indicator (except [P], [R], [N])

The LCD Segments Check:
When entering the self-diagnosis mode, the odo/trip segments blinks five times.

The Gauge Drive Circuit Check:
When entering the self-diagnosis mode, the speedometer, the tachometer, the fuel gauge, and the coolant temperature gauge needles move from the minimum position to the maximum position, then return to the minimum position.






NOTE: After the beeper stops sounding and the gauge needles return to the minimum position, pushing the trip/reset button starts the Beeper Drive Circuit Check (one beep), and the Gauge Drive Circuit Check again.

The check cannot be started until the gauge needles return the minimum position.




The Communication Line Check:
In the self-diagnosis mode, and after the odo/trip LCD Segments Check, the self-diagnosis starts the Communication Line Check.

If all segments come on, the communication line is OK.

If the word Error" is indicated, there is a malfunction in the communication line between the gauge assembly, the multiplex control unit, and the ECM/PCM. Go to Multiplex System Troubleshooting.

Ending the self-diagnosis function:
Turn the ignition switch OFF.

NOTE: If the vehicle speed exceeds 1.2 mph (2 km/h), the self-diagnosis function ends.