Instrument Cluster / Carrier: Testing and Inspection
Gauges Self-Diagnostic Function
The gauge control module (tach) has a self-diagnostic function which consists of the following checks:
* The indicator drive circuit check.
* The ambient meter color variation check.
* The switch input check.
* The beeper drive circuit check.
* The LCD check (multi-information display or information display).
* The gauge drive circuit check (tachometer, fuel gauge and current fuel mileage gauge).
* The communication line check (of the body controller area network (B-CAN) communication line, the fast controller area network (F-CAN) communication line, and the other communication line between the gauges).
NOTE: Indicators are also controlled via the communication lines.
Before doing the self-diagnostic function, make sure the No. A29 (10 A) fuse in the under-hood fuse/relay box and No. B5 (7.5 A) fuse in the under-dash fuse/relay box are OK.
Entering the Self-Diagnostic Function With the HDS
Using the HDS, select BODY ELECTRICAL, GAUGES, then FUNCTION TESTS and do the self-diagnostic function.
Entering the Self-Diagnostic Function (Manual Method)
1. Push and hold the SEL/RESET button.
2. Turn the combination light switch ON.
3. Turn the ignition switch to ON (II).
4. Within 5 sec., turn the combination light switch OFF, then ON and OFF again.
5. Within 5 sec., release the SEL/RESET button, and then push and release the button three times repeatedly.
NOTE:
* While in the self-diagnostic mode, the dashlights brightness controller operates normally.
* While in the self-diagnostic mode, the SEL/RESET switch is used to start the Beeper Drive Circuit Test and the Gauge Drive Circuit Check.
* If the vehicle speed exceeds 1.2 mph (2 km/h) or the ignition switch is turned to LOCK (0), the self-diagnostic mode ends.
The Indicator Drive Circuit Check
When entering the self-diagnostic mode, the following indicators (if equipped) blink:
A/T gear position indicator, ABS indicator, brake system indicator, charging system indicator, cruise control indicator, cruise main indicator, door indicator, DRL indicator, ECON mode indicator, EPS indicator, high beam indicator, high temperature indicator, immobilizer indicator, lights-on indicator, low fuel indicator, low oil pressure indicator, low temperature indicator, low tire pressure indicator, malfunction indicator lamp (MIL), message indicator, seat belt reminder indicator, security indicator, side airbag cutoff indicator, SRS indicator, TPMS indicator, trunk indicator, VSA indicator, and VSA OFF indicator.
The Ambient Meter Color Variation Check
Except Si: When entering the self-diagnostic mode, the color of the ambient meter varies to blue, blue green, and green in that order.
Si: When entering the self-diagnostic mode, the color of the ambient meter stays red at all times.
Switch Input Check
At the initial stage of the self-diagnostic function, the beeper sounds intermittently. The beeper sounds continuously when any of the following switch inputs are switched from OFF to ON: Cruise control main, SET, RESUME switches, ECON switch (except Si), parking brake switch, SEL/RESET switch, and VSA OFF switch.
The Beeper Drive Circuit Check
When entering the self-diagnostic mode, the beeper sounds five times.
The LCD Check
When entering the self-diagnostic mode, all the indicators blink five times.
The Gauge Drive Circuit Check
When entering the self-diagnostic mode, the tachometer needle sweeps from the minimum position to maximum position, then returns to the minimum position.
NOTE: After the beeper stops sounding and the gauge needle returns to the minimum position, pushing the SEL/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 needle returns to the minimum position.
The Communication Line Check
With Multi-Information Display
NOTE: If the multi-information display unit does not work normally, go to audio system symptom troubleshooting multi-information display unit does not work Multi-Information Display Unit Does Not Work.
While in the self-diagnostic mode, the Communication Line Check starts.
If the communication line is OK, the word "OK" will be indicated on the multi-information display. If there is a communication line error, the word "ERROR" will be indicated on the multi-information display.
* F-CAN... ERROR: There is a malfunction in the communication line between the gauge control module (tach) and F-CAN. Check for DTCs in the ECM/PCM, and troubleshoot the indicated DTCs.
* B-CAN... ERROR: There is a malfunction in the communication line between the gauge control module (tach) and B-CAN. Check for DTCs in the body electrical system and troubleshoot the indicated DTCs.
* UART... ERROR: There is a malfunction in the UART communication line between the gauge control module (tach) and the gauge control module (speedo). Go to the gauge control module (tach) input test and check terminal No. 25. If the wire harness is OK, substitute a known-good gauge control module (speedo) and recheck.
With Information Display
NOTE: If the information display unit does not work normally, go to information display unit input test.
While in the self-diagnostic mode, the Communication Line Check starts.
If all indicators come on, the communication line is OK. If faulty, the word "Error" will be indicated on the information display followed by number(s).
* Error 1: There is a malfunction in the communication line between the gauge control module (tach) and F-CAN. Check for DTCs in the ECM/PCM, and troubleshoot the indicated DTCs.
* Error 2: There is a malfunction in the communication line between the gauge control module (tach) and B-CAN. Check for DTCs in the body electrical system and troubleshoot the indicated DTCs.
* Error 3: There is a malfunction in the UART communication line between the gauge control module (tach) and the gauge control module (speedo). Go to the gauge control module (tach) input test and check terminal No. 25. If the wire harness is OK, substitute a known-good gauge control module (speedo) and recheck.
Ending the Self-Diagnostic Function
Turn the ignition switch to LOCK (0).
NOTE: If the vehicle speed exceeds 1.2 mph (2 km/h), the self-diagnostic function ends.