2006 ACURA CSX Service Repair Manual

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Page 2225 of 2893

ACURA CSX 2006 Service Repair Manual ¦§ ¦ §¦ §
¦§ ¦§
¦§ Cavity Wire Test condition
Test: Desired result Possible cause if desired result
is not obtained
Cavity Wire Test condition Test: Desired result Possible cau

¦§ ¦ §¦ §
¦§ ¦§
¦§ Cavity Wire Test condition
Test: Desired result Possible cause if desired result
is not obtained
Cavity Wire Test condition Test: Desired result Possible cause if desired result
is not obtained
22-275
4. With the connector still disconnected, do these input tests at the following connector.
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 5.

11 BLU Ignition switch ON,
turn signal switch
in LEFT Measure the voltage to ground:
There should be battery voltage
when the lights are flashing. Faulty MICU
Faulty combination light
switch
An open in the wire
12 GRN Ignition switch ON, turn signal switch
in RIGHT Measure the voltage to ground:
There should be battery voltage
when the lights are flashing. Faulty MICU
Faulty combination light
switch
An open in the wire
7
1 LT GRN
GRY Disconnect the
gauge control
module (tach) 36P
connector Check for continuity between
terminal No. 7 No. 1 and
gauge control module (tach)
36P connector terminal No. 20
No. 2 :
There should be continuity. An open in the wire
Check for continuity between
terminal No. 7 No. 1 and
body ground (gauge control
module (tach) 36P connector
disconnected):
There should be no continuity. A short to ground in the wire
: TYPE S model
5. Reconnect the connector to the gauge control module (speedo), and do these input tests at the following connector.
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, the gauge control module (speedo) must be faulty; replace it.

6 WHT Under all
conditions Measure the voltage to ground:
There should be battery voltage. Blown No. 23 (10 A) fuse in
the under-hood fuse/relay
box
An open in the wire
5 BRN Ignition switch ON (II) Measure the voltage to ground:
There should be battery voltage. Blown No. 10 (7.5 A) fuse in
the under-dash fuse/relay box
An open in the wire
4 BLK Under all conditions Measure the voltage to ground:
There should be less than 0.5 V. Poor ground (G504)
An open in the wire
08/08/21 14:35:59 61SNR030_220_0277
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Page 2226 of 2893

ACURA CSX 2006 Service Repair Manual µµµ
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)
Release Locked odometer mileage to the
original gauge control module.
22-276 Gauges
Rewriting the ODO Data and Transferring the Maintenance

µµµ
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Release Locked odometer mileage to the
original gauge control module.
22-276 Gauges
Rewriting the ODO Data and Transferring the Maintenance Minder Data to a
New Gauge Control Module
NOTE:
Obtain a new gauge control module before starting the rewriting process.
Rewriting is not possible on a gauge control module that will not communicate with the HDS.
Make sure that the HDS shows the correct VIN for the car you are working on.
One you have started this procedure, you must complete it before removing the HDS from the DLC.
Connect a battery jump box (not a Battery charger) to insure that correct battery voltage will be maintained.
1. Before replacing the gauge control module, connect the HDS.
2. Select GAUGES from the BODY ELECTRICAL menu display.
3. Select ‘‘Gauge Control M odule Replacement (ODO
rewrite)’’ from the ADJUSTMENT menu, and follow
the instructions on the display to retrieve the ODO
data and the Maintenance Minder information.
4. Replace the gauge control module.
5. Follow the instructions on the display to write the new ODO data and Maintenance Minder data to a
new gauge control module. If the data transfer fails,
refer to the instructions below to release the locked
ODO data. If after you attempt to transfer mileage the odometer
has dashes ( ), garbled, or 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 to LOCK (0), reconnect the original gauge assembly.
4. Completely re-boot the HDS.
5. Clear any stored DTCs.
6. Navigation to Body. Electric/Gauges/Adjustment/Instrument Panel
Replacement.
7. Select ‘‘3. Releasing Locked ODO Data’’.
8. Follow the prompts and the Odometer mileage will be restored.
9. Start over and make sure the screen prompts are followed.
08/08/21 14:35:59 61SNR030_220_0278
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Page 2227 of 2893

ACURA CSX 2006 Service Repair Manual

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Tachometer Speedometer
22-277
Gauge Control Module Replacement
A
B A
B
NOTE: Before replacing the gauge control module, do
the ‘‘Rewriti

Page 2228 of 2893

ACURA CSX 2006 Service Repair Manual
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22-278Gauges
Dash Lights Brightness Controller and Odometer Select/Reset Switch Test/
Replacement
A
Terminal
Position SEL/RESET

Page 2229 of 2893

ACURA CSX 2006 Service Repair Manual µµµ
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Description
Outside Air Temperature Indicator Logic Update to the outside air temperature
indicator while driving
Troubleshooting
22-279
Ou

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Description
Outside Air Temperature Indicator Logic Update to the outside air temperature
indicator while driving
Troubleshooting
22-279
Outside Air Temperature Indicator Calibration
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.
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.
Initial outside air temperature indication after the
ignition switch is turned to ON (II).
If the engine coolant temperature is 60 °C (140 °F) or higher when the ignition switch is turned to 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 59 °C (139 °F) or lower when the ignition switch is turned to ON (II), the
current temperature measured by the outside air
temperature sensor will be indicated. If the temperature measured by the outside air
temperature sensor is greater than the temperature on
the outside air temperature indicator, the outside air
temperature indicator will increase by 1 °C (1.8 °F) per
minute after the vehicle speed is greater than 30 km/h
(19 mph) 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
30 km/h (19 mph). If the vehicle speed drops below
30 km/h (19 mph), the indicator will not update again
until the vehicle speed is increased to 30 km/h (19 mph)
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 °C every
2 seconds (1 °F
every 1.1 seconds) until the current
outside air temperature is indicated regardless of
vehicle speed.
If the indicator displays ‘‘ ’’ for more than 2
seconds after selecting the outside air temperature
display mode, check the outside air temperature sensor
(see page 21-68), or gauge control module self-
diagnosis (see page 22-241).
(cont’d)
08/08/21 14:36:00 61SNR030_220_0281
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Page 2230 of 2893

ACURA CSX 2006 Service Repair Manual ¶¶´µ
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Calibration
Example:
Incorrect value = 20 °C (68 °F)
Desired correction value = 1 °C ( 2 °F)
Correct value = 21 °C (70 °F)
Desired correction valu

Page 2231 of 2893

ACURA CSX 2006 Service Repair Manual Î
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22-281
Reminder Systems
Component Location Index
GAUGE CONTROL MODULE (TACH)
MICU COMBINATION LIGHT SWITCH
IGNITION KEY SWITCH PARKING

Page 2232 of 2893

ACURA CSX 2006 Service Repair Manual Î
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22-282 Reminder Systems
Circuit Diagram

MICU

ORN
(10 A) No. 23
BLK1 2
SRS UNIT
G602
B11
A12
A11 YEL
WHT REDRED

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