Initial Inspection and Diagnostic Overview

Gauge Control Module Self-diagnostic Function

Before troubleshooting the gauge system, refer to multiplex integrated control system B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

The gauge control module has a self-diagnostic function shown, and also has a customize reset function.

- The beeper drive circuit check.
- The indicator drive circuit check.
- The switch input test.
- The LCD/MID 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 line and the fast-controller area network (F-CAN) communication line between the gauges).

NOTE:

- Indicators are also controlled via the communication lines.
- The self-diagnostic function is also used to reset the PAX system warning.

Entering the self-diagnostic function

Before doing the self-diagnostic function, check the No. 7 (7.5 A) fuse and the No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box.

1. Push and hold the SELECT (Dash lights brightness control) button.

2. Turn the headlights ON.

3. Turn the ignition switch to ON (II).

4. Within 5 sec., turn the headlights OFF (AUTO), then ON and OFF (AUTO) again.

5. Within 5 sec., release the SELECT button, and then push and release the button three times repeatedly.

NOTE:

- While in the self-diagnostic mode, the dash lights brightness controller operates normally.
- While in the self-diagnostic mode, the SELECT 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 blink:

A/T gear position indicator, Brake system indicator, Charging system indicator, Cruise control indicator, Cruise main indicator, DRL indicator, Eco indicator (Canada and '08-10 USA models), Fog light indicator, High beam indicator, immobilizer indicator, Lights-on indicator, Low fuel indicator, Low tire pressure indicator, Maintenance required indicator, Malfunction indicator lamp (MIL), Message indicator (Touring model), Low oil pressure indicator, Power tailgate indicator ('09-10 EX-L model), Seat belt reminder indicator, Security indicator, Side airbag cutoff indicator, VSA activation indicator, VSA indicator, and Washer fluid level indicator (Canada models).

Switch Input Check

After the intermittent beeper sounds at the initial stage of self-diagnostic, a beeper sounds continuously while any of the following switch inputs are switched from OFF to ON:

Parking brake switch, brake fluid level switch, VSA OFF switch, cruise control master, SET, RESUME, CANCEL switches, SELECT/RESET switch, INFO switch (MID), and parking and back-up sensor switch.

The Beeper Drive Circuit Check

When entering the self-diagnostic mode, the beeper sounds five times, then a communication check result is displayed.

The LCD/MID Segment Check

When entering the self-diagnostic mode, the all segments blink five times. For MID, the words "Checking Now" on the display blinks five times.

The Gauge Drive Circuit Check

When entering the self-diagnostic 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 SELECT/RESET knob 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

With Multi-information Display

While in the self-diagnostic mode, the Communication Line Check starts after the LCD/MID Segments Check.

If the word "F-CAN------OK", "B-CAN------OK", "COMPASS------OK"* are indicated, communication lines are OK. If there is a communication line error, the word "ERROR" is indicated instead of "OK".

- If the word "F-CAN------ERROR" is indicated, there is a malfunction in the communication line between the gauge control module and the F-CAN. Check for DTCs in the PCM and troubleshoot any DTCs found. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.
- If the word "B-CAN------ERROR" is indicated, there is a malfunction in the communication line between the gauge control module and the B-CAN. Go to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A. (B1155 or B1161 set).
- If the word "COMPASS------ERROR" is indicated, there is a malfunction in the communication line between the gauge control module and the compass unit. Check the compass unit. If the unit is OK, go to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

*: Touring model without navigation system

Faulty (example Compass Error)





With Normal Display

If all segments come on, the communication lines are OK. If there is a communication line error, the word "Error" is indicated on the information display followed by a number.

While in the self-diagnostic mode, the Communication Line Check starts after the LCD/MID Segments Check.

- If the word "Error 1" is indicated, there is a malfunction in the communication line between the gauge control module and the fast-controller area network (F-CAN). Check for DTCs in the PCM and troubleshoot any DTCs found. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A Troubleshooting - 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 Troubleshooting - B-CAN System Diagnosis Test Mode A. (B1157 or B1159 set).
- 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 fast-controller area network (F-CAN). Check for DTCs in the PCM and troubleshoot any DTCs found. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

Faulty (example Error 1)





If any communication line errors are found, go to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

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.

Customize Reset Function

While in the self-diagnostic mode, the customized data can be reset to the default condition.

1. Turn the lighting switch to ON (II).

2. Push and hold the SELECT button for more than 10 seconds (The beeper sounds at the same time).

3. When the beeper stops sounding, it means the customize reset is complete.