Initial Inspection and Diagnostic Overview
Self-diagnostic FunctionThe gauge assembly has a self-diagnostic function.
- beeper drive circuit check
- The indicator drive circuit check
- The LCD segments check
- The gauges drive circuit check (Speedometer, Tachometer, Fuel gauge. Coolant temperature gauge)
- The communication line check (the coolant temperature signal line between the gauge and PCM)
Entering the self-diagnostic function
Before doing the self-diagnostic function, check the No. 9 (10 A) fuse in the driver's under-dash fuse/relay box and No. 13 (7.5 A) fuse in the passenger's under-dash fuse/relay box.
1. Push and hold the trip/reset button.
2. Turn the lighting switch ON.
3. Turn the ignition switch ON (II).
4. Within 5 sec., turn the lighting switch OFF, then ON and OFF again.
5. Within 5 sec., release the trip/reset button, then push and release the button four times repeatedly.
NOTE:
- While in the self-diagnostic mode, the dash lights brightness controller operates normally.
- While in the self-diagnostic mode, the trip/reset button is used to start the beeper drive circuit check and the gauge drive circuit check.
- If the vehicle speed exceeds 1.2 mph (2 km/h) or the ignition switch is turned OFF, the self-diagnostic mode ends.
The Beeper Drive Circuit Check
When entering the self-diagnostic mode, the beeper sounds five times.
The Indicator Drive Circuit Check
When entering the self-diagnostic mode, the following indicators blink. Seat belt indicator. Door/trunk indicator. Brake system light. Low fuel indicator. Maintenance required indicator (USA), Washer fluid level indicator light (Canada), Oil pressure light, and A/T gear position indicator (except P, R, N).
The LCD Segment Check
When entering the self-diagnostic mode, the odo/trip segment blinks five times.
The Gauge Drive Circuit Check
When entering the self-diagnostic mode, the speedometer and the tachometer, l,he fuel gauge, and the coolant temperature gauge needles sweep from the minimum position to 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 needles return to the minimum position. If the gauge needles fail to sweep, replace the gauge assembly.
The Communication Line Check
In the self-diagnostic mode, 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 and the PCM.
Ending the self-diagnostic function
Turn the ignition switch OFF.
NOTE: If the vehicle speed exceeds 1.2 mph (2 km/h),the self-diagnostic function ends. If any of the checks do not function as specified, replace the gauge assembly.