Honda Civic. Manual — part 708

1. Before replacing the gauge control module, connect the HDS.
2. Select GAUGES from the BODY ELECTRICAL menu display.
3. Select "Gauge Control Module Replacement (ODO rewrite)" from the

ADJUSTMENT menu, and follow the instructions on the display to retrieve
the ODO value and the Smart Maintenance information.

4. Replace the gauge control module.
5. Follow the instructions on the display to write the new ODO value and Smart

maintenance to the new gauge control module. If the data transfer fails, refer to
the instructions to release the locked ODO value .

RELEASE LOCKED ODOMETER MILEAGE TO THE ORIGINAL GAUGE CONTROL MODULE

If after you attempt to transfer mileage the odometer has dashes (- - -), garbled, or
incorrect value display, do the following Start over. The original gauge control
module is going to be unlocked and restored to its original state.

1. Confirm that you have the latest HDS version of software.
2. Make sure that the HDS shows the correct VIN for the car you are working on.
3. With the ignition switch OFF, reconnect the original gauge assembly.
4. Completely re-boot the HDS.
5. Clear any stored DTCs.
6. Navigate to Body Electric/Gauges/Adjustment/Instrument Panel Replacement.
7. Select "3. Releasing Locked ODO Valve".
8. Follow the prompts and the Odometer mileage will be restored.
9. Start over and make sure the screen prompts are followed.

DASH LIGHTS BRIGHTNESS CONTROLLER AND ODOMETER
SELECT/RESET BUTTON TEST/REPLACEMENT

1. Remove the subdisplay visor (see SUBDISPLAY VISOR

REMOVAL/INSTALLATION ) and disconnect the connectors.

2. Remove the two screws and the dash lights brightness controller-odometer

select/reset button (A).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

Fig. 24: Removing Dash Lights Brightness Controller-Odometer
Select/Reset Button

3. Check for continuity between the terminals in each switch position according

Fig. 25 .

Fig. 25: Checking Continuity Between Dash Light Brightness Controller
And Odometer Select/Reset Button Terminals Chart

4. If the continuity is not as specified, replace the bulbs (B) or the dash lights

brightness controller-odometer select/reset button.

OUTSIDE AIR TEMPERATURE INDICATOR CALIBRATION

DESCRIPTION

The outside temperature sensor is located behind the center of the front bumper.
The gauge control module (tach) uses measurements from this sensor to display the
outside air temperature.

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

Because of the location of the sensor, it may be affected by heat reflection from the
road, engine and radiator heat or hot exhaust from surrounding traffic. These
conditions can heat soak the outside air temperature sensor and cause inaccurate
readings. Logic has been written into the gauge control module (tach) to help
prevent abnormal or fluctuating outside air temperature indicator readings.

OUTSIDE AIR TEMPERATURE INDICATOR LOGIC

Initial outside air temperature indication after the ignition switch is turned ON (II).

If the engine coolant temperature is 140°F (60°C) or higher when the ignition
switch is turned ON (II), the outside air temperature indicated the last time the
key was turned off will be displayed regardless of the current temperature
measured by the outside air temperature sensor.

If the engine coolant temperature is 139°F (59°C) or lower when the ignition
switch is turned ON (II), the current temperature measured by the outside air
temperature sensor will be indicated.

UPDATE TO THE OUTSIDE AIR TEMPERATURE INDICATOR WHILE DRIVING

If the temperature measured by the outside air temperature sensor is greater than the
temperature on the outside air temperature indicator, the outside temperature
indicator will increase by 1.8°F (1°C) per minute after the vehicle speed is greater
than 19 mph (30 km/h) for more than 1 minute and 30 seconds. It will continue to
increase until the current outside air temperature is indicated. So, the first change to
the outside air temperature indicator is 1 minute and 30 seconds after the vehicle
speed is greater than 19 mph (30 km/h). If the vehicle speed drops below 19 mph
(30 km/h), the indicator will not update again until the vehicle speed is increased to
19 mph (30 km/h) or more for more than 1 minute and 30 seconds again. If the
outside air temperature is less than the indicated temperature, the temperature will
decrease 1°F every 1.1 seconds (1°C every 2 seconds) until the current outside air
temperature is indicated regardless of vehicle speed.

TROUBLESHOOTING

If the indicator displays "- - -" for more than 2 seconds after selecting the outside air
temperature display mode, check the outside air temperature sensor, or gauge
control module self-diagnosis (see SELF-DIAGNOSTIC FUNCTION ).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

CALIBRATION

The outside air temperature indicator's displayed temperature can be recalibrated
±5°F (or ±3°C) to meet the customer's expectations.

1. Turn the ignition switch ON (II).
2. Select the outside air temperature display.
3. Press and hold the SEL/RESET switch until the trip meter resets, then release

it. Press, and continue to hold, the switch again, and the display will scroll
through temperature settings from +5°F to -5°F (or +3°C to -3°C) as shown.

Fig. 26: Resetting Trip Meter

4. When the desired correction value appears on the display, release the button,

and the recalibrated outside air temperature will be displayed.

Example:

Incorrect value = 68°F (20 °C)
Desired correction value = +2°F (+1°C)
Correct valve = 70°F (21°C)
Desired correction value = -2°F (-1°C)
Correct valve = 66°F (19°C)

NOTE:

The recalibration temperature is not the value the
sensor sees. Therefore the temperature can only be
adjusted ±5 degrees from the sensor.

NOTE:

To recalibrate the display to the true temperature,
remove the outside air temperature sensor (A), but
leave it connected. Submerge the sensor and a
thermometer (B) in a container of ice water (C). Select
the calibration mode as described above, then

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)