How to Troubleshoot the Gauges and Indicators

The gauge assembly has a self-diagnosis function that checks these circuits:

Entering the self-diagnosis function:

Before entering the self-diagnosis function, check the No. 9 (10A) fuse in the under-hood fuse/relay box and No. 10 (7.5A) fuse in the under-dash fuse/relay box.

1.Push and hold the trip/reset button.

2.Turn the headlights ON.

3.Turn the ignition switch ON (II).

4.With in 5 sec., turn the headlights OFF, then ON and OFF again.

5.With in 5 sec., release the trip/reset button, then push and release the button four times.

Note:

 

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, Tailgace 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 comes on, the communication line is OK.

If the word ²Error² is indicated, there is a malfunction in the communication line between the gauge assembly, the multiplex control unit, and the ECM/PCM. Go to Mltiplex System Trubleshooting.

 

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.