Gauges Self-Diagnostic Function
The gauge control module 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.
The gauge drive circuit check (engine coolant temperature gauge, fuel gauge, speedometer, and tachometer).
The communication line check (of the body controller area network (B-CAN) communication line, the fast controller area network (F-CAN) communication line between the gauges).

NOTE: Indicators are also controlled via the communication lines.
Entering the Self-Diagnostic Function With the HDS
Using the HDS, select BODY ELECTRICAL, GAUGES, then FUNCTIONAL TESTS and do the self-diagnostic function.
Entering the Self-Diagnostic Function (Manual Method)
Before doing the self-diagnostic function, make sure the No. A29 (10 A) fuses in the under-hood fuse/relay box and No. B5 (10 A) fuse in the under-dash fuse/relay boxare OK.

1.
Push and hold the SEL/RESET button.

2.
Turn the combination light switch to the PARKING position (enu_255699_1.0).

3.
Turn the vehicle to the ON mode.

4.
Within 5 sec., turn the combination light switch OFF, then to the PARKING position (enu_255699_1.0) and OFF again.

5.
Within 5 sec., release the SEL/RESET button, and then repeatedly push and release the button three times.

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 turn the vehicle to the OFF (LOCK) mode, the self-diagnostic mode ends.
The Indicator Drive Circuit Check
When entering the self-diagnostic mode, the following indicators (if equipped) blink:
ABS indicator, ACC indicator, A/T gear position indicator, AWD system indicator, brake system indicator, charging system indicator, CMBS indicator, door open indicator, EPS indicator, fog light indicator, high beam indicator, high beam support system indicator, immobilizer indicator, keyless access indicator, lights-on indicator, LKAS indicator, low fuel indicator, low oil pressure indicator, low tire pressure indicator, malfunction indicator lamp (MIL), message indicator, power tailgate indicator, seat belt reminder indicator, security indicator, side airbag cutoff indicator, SRS indicator, starter system indicator, VSA indicator, VSA OFF indicator, and washer fluid level indicator.
The Ambient Meter Color Variation Check
When entering the self-diagnostic mode, the color of the ambient meter varies to white, white/green, and green in that order
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, CANCEL, SEL/RESET switch, parking brake switch, PREVIOUS switch, NEXT switch, ECON switch, CMBS OFF switch, DISTANCE switch, LKAS switch, Heated windshield wiper area switch, and VSA OFF switch.
The Beeper Drive Circuit Check
When entering the self-diagnostic mode, the beeper sounds five times.
The LCD Segment Check
When entering the self-diagnostic mode, all the segments blink five times.
The Gauge Drive Circuit Check
When entering the self-diagnostic mode, the speedometer, the tachometer, the fuel gauge, and the engine coolant temperature gauge sweep 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 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 needles return to the minimum position.
The Communication Line Check
While in the self-diagnostic mode, the Communication Line Check starts after the LCD/MID Segments Check.

If "ยทยทยท" comes on, the communication line is OK. If there is a communication line error, the word ''ERROR'' will be indicated on the multi-information display.

Error Code List
Error code
Type of communication line(s) error
ERROR 1
F-CAN communication
ERROR 2
B-CAN communication
ERROR 1, 2
F-CAN and B-CAN communication

Indication Example
ERROR 1: There is a malfunction in the communication line between the gauge control module and F-CAN. Check for DTCs in the PCM, and troubleshoot the indicated DTCs.
ERROR 2: There is a malfunction in the communication line between the gauge control module and B-CAN. Check for DTCs in the body electrical system and troubleshoot the indicated DTCs.
ERROR 1, 2: There is a malfunction in the communication line between the gauge control module and F-CAN or B-CAN. Check for DTCs in the PCM first and troubleshoot the indicated DTCs. If there is no DTCs in the PCM, check for the body electrical system DTCs and troubleshoot the indicated DTCs.
Ending the Self-Diagnostic Function
Turn the vehicle to the OFF (LOCK) mode.

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