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Acura RL. Manual - part 544

1. Before replacing the gauge control module, connect the HDS.

2. Select GAUGES from the BODY ELECTRICAL system select menu with the HDS.

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 below to release the locked
ODO value.

RELEASE LOCKED ODOMETER MILEAGE TO THE ORIGINAL GAUGE CONTROL
MODULE.

If after you attempt to transfer mileage, the new odometer has dashes (-), garbled, or an incorrect value
displayed, 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 control module.

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 Value."

8. Follow the prompts and the Odometer mileage will be restored.

9. Start over and make sure the screen prompts are followed.

GAUGE CONTROL MODULE REPLACEMENT

1. Remove the instrument fascia (see DRIVER'S SWITCH PANEL REMOVAL/INSTALLATION ).

2. Remove the screws from the gauge control module (A).

correct battery voltage will be maintained.

NOTE:

Before replacing the gauge control module, do the "Rewriting the ODO Data
and Transferring the Maintenance Minder on a New Gauge Control
Module" (see REWRITING THE ODO DATA AND TRANSFERRING THE
MAINTENANCE MINDER ON A NEW GAUGE CONTROL MODULE ).

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Gauges - RL

Friday, June 05, 2009 3:33:41 PM

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Fig. 28: Identifying Gauge Control Module With Screws
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Disconnect the connectors (B), and remove the gauge control module.

4. Install the gauge control module in the reverse order of removal.

SELECT/RESET/INFORMATION SWITCH TEST/REPLACEMENT

1. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).

2. Disconnect the 6P connector (A) from the select/ reset/information switch (B).

Fig. 29: Identifying Select/ Reset/Information Switch And 6P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Measure resistance between the select/reset/ information switch 6P connector No. 6 and No. 5

terminals in each switch position according to the table.

TERMINALS RESISTANCE CHART

Position

Resistance

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Gauges - RL

Friday, June 05, 2009 3:33:41 PM

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4. If the resistance is not as specified, remove the two screws and replace the switch.

5. If the switch is OK, but there is a problem with the switch function, check the steering switches

harness and cable reel.

OUTSIDE AIR TEMPERATURE INDICATOR CALIBRATION

DESCRIPTION

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

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 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°F (1°C) per minute
after the vehicle speed is greater than 19 mph (30 km/h) for more than 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 140°F (60°C), the temperature increases 1°F (1°C) every 2 seconds
until the current outside air temperature.

If the outside air temperature is less than the indicated temperature, the temperature will decrease 1°F (1°C)
every 2 seconds until the current outside air temperature is indicated regardless of vehicle speed.

About 33 ohms

SEL/RESET About 1,043 ohms

About 363 ohms

NOTE:

To test the outside air temperature sensor (see OUTSIDE AIR
TEMPERATURE SENSOR TEST ).

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Gauges - RL

Friday, June 05, 2009 3:33:41 PM

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TROUBLESHOOTING

If the indicator displays "-" for more than 2 seconds after selecting the outside air temperature display mode,
check the climate control system or multiplex integrated control system for DTCs (see B-CAN System
Diagnosis Test Mode A) (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE
A ).

CALIBRATION

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

Calibrate the outside air temperature with the HDS or by custom memory setting.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Gauges - RL

Friday, June 05, 2009 3:33:41 PM

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