Instrument Panel, Gauges and Warning Indicators: Testing and Inspection
Self-diagnostic ProcedureBefore troubleshooting the gauge system, refer to multiplex integrated control system B-CAN System Diagnosis Test Mode A.
The gauge control module has a self-diagnosis function
- The beeper drive circuit check
- The indicator drive circuit check
- The switch input test
- The LCD segments check
- The gauges drive circuit check (Speedometer, Tachometer, Fuel gauge. Coolant temperature gauge)
- The communication line check (of the body-controller area network (B-CAN) communication I ne and the frame controller area network (F-CAN) communication line between the gauges)
NOTE: Indicators are also controlled via the communication line
Entering the self-diagnosis function:
Before doing the self-diagnosis function, check the No.7 (10 A) fuse and the No.21 (7.5 A) 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. Within 5 sec, turn the headlights OFF then ON and OFF again
5. Within 5 sec, release the trip/reset button, and then push and release the button three times repeatedly
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
- If the vehicle speed exceeds 12 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, the following indicator lights blink Seat belt indicator, charging system indicator, low fuel indicator, maintenance required indicator, security indicator, high beam indicator, lights on indicator, malfunction indicator lamp (MIL), A/T gear position indicator, ABS indicator, cruise main indicator and safety indicators/doors and trunk)
Switch Input Check:
After the intermittent beeper sounds at the initial stage of self-diagnosis a beeper sounds continuously while any of the following switch inputs are switched from OFF to ON Cruise control main cruise set, cruise cancel, cruise resume, VSA OFF, and parking brake switches
The LCD Segment Check;
When entering the self-diagnosis mode, the odo/trip segments and outside air temperature segment blink 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 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 again until the gauge needles return to the minimum position.
If a needle fails to sweep or the beeper does not sound, replace the gauge control module.
The Communication Line Check:
While in the self-diagnosis mode, the Communication Line Check starts after the odo/trip LCD Segments Check. If all segments comes on, the communication line is OK.
- If the word "Error 1" is indicated, there is a malfunction in the communication line between the gauge control module and the frame-controller area network (F-CAN). Check for DTCs in the ECM/PCM. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A.
- If the word "Error 2" is indicated, there is a malfunction in the communication line between the gauge control module and the body-controller area network (B-CAN). Go to B-CAN System Diagnosis Test Mode A.
- If the word "Error 3" is indicated, there is a malfunction in the communication line between the gauge control module and the body-controller area network (B-CAN) and the frame-controller area network (F-CAN). Check for DTCs in the ECM/PCM. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A.
- If any communication line errors are found, go to B-CAN System Diagnosis Test Mode A.
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.