sensor ACURA CSX 2006 Service Repair Manual


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DTC B1175:
YES
NO YES NO
YES
NO
22-267
FUEL TANK UNIT 4P CONNECTOR
GND (LT GRN)
JUMPER WIRE
FUEL UNIT
(ORN)
JUMPER WIRE GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
FUEL UNIT (PUR) GND (ORN)
Fuel Level Sensor (Fuel Gauge
Sending Unit) Circuit Open
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for 30 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the fuel level sensor
circuit is OK at this time. Check for loose or poor
connections.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the fuel tank unit 5P connector and the gauge control module (tach) 36P connector.
7. Connect fuel tank unit 4P connector terminals No. 1 and No. 3 to body ground with jumper wires. 8. Check for continuity between gauge control
module (tach) 36P connector terminals No. 32 and
No. 33 and body ground individually.
Go to step 9.
Repair an open in the wire between the gauge
control module (tach) and the fuel tank unit.
9. Do the fuel gauge sending unit test (see page 11-340).
Replace the gauge control module (tach)
(see page 22-277).
Replace the fuel tank unit (see page 11-339).
Wire side of female terminals Wire side of female terminals
I s DT C B117 5 i nd i cat ed ?
Is there continuity?
I s t he f uel gauge send i ng uni t OK ?
08/08/21 14:35:20 61SNR030_220_0269
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DTC B1176:
YES
NO
YES
NO YES
NO
22-268Gauges
DTC Troubleshooting (cont’d)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
FUEL UNIT (PUR)
Fuel Level Sensor (Fuel Gauge
Sending Unit) Circuit Short
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for 30 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the fuel level sensor
circuit is OK at this time. Check for loose or poor
connections.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the fuel tank unit 4P connector.
7. Clear the DTCs with the HDS.
8. Turn the ignition switch to LOCK (0), and then back to ON (II).
9. Wait for 30 seconds.
10. Check for DTCs with the HDS.
Go to step 11.
Replace the fuel gauge sending unit (see page
11-340). 11. Disconnect the gauge control module (tach) 36P
connector.
12. Check for continuity between gauge control module (tach) 36P connector terminal No. 32 and
body ground.
Repair a short in the wire between the gauge
control module (tach) and the fuel tank unit.
Replace the gauge control module (tach)
(see page 22-277).
Wire side of female terminals
I s DT C B117 6 i nd i cat ed ?
I s DT C B117 6 i nd i cat ed ? Is there continuity?
08/08/21 14:35:20 61SNR030_220_0270
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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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Calibration
Example:
Incorrect value = 20 °C (68 °F)
Desired correction value = 1 °C ( 2 °F)
Correct value = 21 °C (70 °F)
Desired correction value = 1 °C ( 2 °F)
Correct value = 19 °C (66 °F)
22-280 Gauges
Outside Air Temperature Indicator Calibration (cont’d)
B
A
C
The outside air temperature indicator’s displayed
temperature can be recalibrated 3 °C (or 5 °F) to
meet the client’s expectations. 1. Turn the ignition switch to ON (II).
2. Select the outside air temperature display.
3. Press and hold the SEL/RESET button 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 3 °C to 3 °C
(or 5 °F to 5 °F) as shown.
4. When the desired correction value appears on the display, release the button, and the recalibrated
outside air temperature will be displayed.
NOTE: To recalibration temperature is not the value
the sensor sees. Therefore the temperature can
only be adjusted 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
recalibrate the display to the true temperature.
08/08/21 14:36:00 61SNR030_220_0282
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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
WHT
ORN28
LT GRN BLK16
G504
INDICATOR DRIVE CIRCUIT
MICU
  ECM/PCM MAIN CIRCUIT
21
PNK
124
CAN L
CAN H


 CHIME
WHT
BRN
RED 19
1
WHT No. 2 (IG) (50 A)
GAUGE CONTROL MODULE (TACH) 18
17
IG1
BAT
BLU
WHT
UNDER-HOOD FUSE/RELAY BOX
BATTERY IGNITION SWITCH
No. 1 (BAT) (100 A)
(7.5 A) No. 10UNDER-DASH
FUSE/RELAY
BOX
DRIVE
CIRCUIT
PARKING
BRAKE
REMINDER
SEAT
BELT
REMINDER
KEY-IN
REMINDER
F-CAN
TRANSCEIVER B-CAN
TRANSCEIVERLIGHTS-ON
INDICATOR
(LED)
IG1 HOT in ON (II)
and START (III)
ABS MODULATOR-
CONTROL UNIT*1 LIGHTS-ON INDICATOR
DIMMING CIRCUIT
PARKING
BRAKE
SWITCH
(Closed:
Lever pulled)
DRIVER’S
SEAT BELT
BUCKLE
SWITCH
(Closed:
unbuckled) SEAT BELT
REMINDER
INDICATOR
(LED)
BRAKE
SYSTEM
INDICATOR
(LED)COMPULSORY
TURNING-ON
CIRCUIT
LIGHTS-ON
REMINDER
CLIMATE
CONTROL
UNIT
IMMOBILIZER-
KEYLESS
CONTROL UNIT
HANDSFREELINK
CONTROL UNIT*4
H1
D4 D2
Q1 Q9
G2 :CANline
1
VSA MODULATOR-
CONTROL UNIT*2
YAW RATE-LATERAL
ACCELERATION SENSOR*2
DATA LINK CONNECTOR
EPS CONTROL UNIT
TPMS CONTROL UNIT*3 10 V
STABILIZING
CIRCUIT
*1: ’06 07 Touring and Premium models
*2: ’07 TYPE S and ’08 09 models
*3: ’08 09 models
*4: ’09 model with navigation system
MICU
A
B
08/08/21 14:36:02 61SNR030_220_0284
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(#') ’06-07 models
22-288Moonroof
Circuit Diagram
No. 24
(20 A)
IGNITION SWITCH
BATIG1
WHT
BLU
No. 2 (IG) (50 A)
BATTERY
No. 1 (BAT) (100 A)
(20 A)
D2
G21
E23
K3
K7
YEL
WHT
(CLOSE)
(OPEN) PUR
PUR PUR
LT GRN PUR
5
AUTO
AUTO
MOONROOF CONTROL UNIT
6
10OPEN CLOSE
HALL SENSOR
ECM/PCM
4
BLU GRN
No. 4 (P/W) (40 A)
1
10 7
8
9
7
LT BLU
CPU
MOONROOF SWITCH
BLU
G503 BLK
GRY
5 6
2
9 LT GRN
4
GRN LIGHT
(LED)
TILT
MOTOR
CLOSE
OPEN No. 32
UNDER-HOOD FUSE/RELAY BOX
RIGHT REAR
WINDOW MOTOR
No. 14 (7.5 A) FUSE
(UNDER-DASH
FUSE/RELAY BOX)
DASH LIGHTS
BRIGHTNESS
CONTROLLER UNDER-DASH
FUSE/RELAY BOX
IG1 HOT in ON (II)
and START (III)
H1
K2
08/08/21 14:36:04 61SNR030_220_0290
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Î
(#') ’08-09 models
22-289
BLU
No. 4 (P/W) (40 A)
BATTERY
No. 1 (BAT) (100 A)
(20 A)
G2
G21
Q1
K7
YEL
WHT
(CLOSE)
(OPEN) WHT
PUR
LT GRN
AUTO
AUTO
MOONROOF CONTROL UNIT
6
10OPEN CLOSE
HALL SENSOR
ECM/PCM
4
BLU
GRN
1
10 7
8
9
5
LT BLU
CPU ORN
G503 BLK
GRY
3 4
8
6 LT GRN
2 TILT
MOTOR
CLOSE
OPEN No. 32
UNDER-HOOD FUSE/RELAY BOX
No. 14 (7.5 A) FUSE
(UNDER-DASH
FUSE/RELAY BOX)DASH LIGHTS
BRIGHTNESS
CONTROLLER K2
D4 No. 24 (20 A)
5POWER
WINDOW
RELAY
MICU
UNDER-DASH FUSE/RELAY BOX
K3
LIGHT
(LED)
(0.84 W) LIGHT *1: Except TYPE S models
*2: TYPE model
No. 23 (10 A)
*2 *1
MOONROOF SWITCH
GRN*1
RED*2
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GA-Net Bus Configuration
System Diagram (With navigation)
23-7
Reverse signalGPS antenna
AM/FM antenna Speakers
Navigation unit
Navi DVD
Navigation/Audio Display Screen
CLOCK
(Set by GPS)
Stereo Amplifier
(Premium sound
system)
Color
signal
Accessory
(MusicLink,
CD changer, etc.)
XM Receiver
XM antenna
(satellite &
terrestrial)
Auxiliary jack
assembly
Audio remote
switches
(steering wheel)
Illumination
Signal
(lighted buttons)
AM/FM
receiverCD Player
(CD, MP3, WMA)
Audio
processor
PC Card Slot (for playing audio
MP3, and WMA audio files) Navi
processor
(ECU)
GPS
receiver
Yaw rate sensor
(senses turning)
DVD player
(navi maps)
GA-Net
Audio
Audio
Section
Navigaion
Section
Illumination
(Night/Day
display mode)
ECM/PCM
(vehicle speed pulses) Microphone
(on ceiling) TALK/BACK
voice buttons
(’08 model) Climate control unit
The GA-Net bus passes audio and navigation commands throughout the navigation and audio components.
These commands include navigation touch screen and hard button signals, audio/XM selections by voice, and XM
station and music title names. Because the entire bus is daisy chained between components (see diagram), any open
or short in the GA-Net bus harness will cause any or all of these functions to become inoperative. The addition of any
audio accessory must maintain the continuity of the GA-Net bus by installing the Y cable included with the accessory
kit.
(cont’d)
08/08/21 14:03:45 61SNR030_230_0010
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General Operation
Anti-theft Feature
Symptom DiagnosisSelf-Inertial Navigation Limitations
23-90Navigation System
General Troubleshooting Information
Refer to the Navigation System manual for the
navigation system operating procedures.
The navigation system has a coded theft protection
circuit. Be sure you have the client’s anti-theft security
code before;
 Disconnecting the battery
 Disconnecting the navigation unit A (17P) and C (12P) connector
 Removing the No. 23 (10 A) fuse from the under-hood fuse/relay box
After service, reconnect power to the navigation unit,
and turn the ignition switch ON (II). Enter the 4-digit
anti-theft security codes, then select Done.
If the code cannot be found, use the interactive Network
(iN) to look it up. You can view the serial number in one
of the Navi ECU diagnostic screen (see page 23-139).
Alternatively, you can find the serial number from the
navigation unit in the dash.
When replacing the navigation unit, be sure to give the
client the new anti-theft security code.
Certain circumstances and system limitations can result
in occasional vehicle positioning errors. Some clients
may think this indicates a problem with the navigation
system when, in fact, the system is normal. Keep the
following items in mind when interviewing clients
about symptoms of the navigation system. The limitations of the self-inertial portion of the
navigation system (the yaw rate sensor and the vehicle
speed signal) can cause some discrepancies between
the vehicle’s actual position and the indicated vehicle
position (GPS vehicle position).
The following circumstances may cause vehicle
positioning errors:
 Moving the vehicle with the engine stopped and the vehicle stopped, such as by ferry or tow truck, or if
the vehicle is spun on a turn table.
 Tire slippage, changes in tire rolling diameters, and some driving situations may cause discrepancies in
travel distances. Examples of this include:
– Continuous tire slippage on a slippery surface.
– Driving with snow chains mounted.
– Abnormal tire pressure.
– Incorrect tire size.
– Frequent lane changes across a wide highway.
– Continuous driving on a straight or gently curving highway.
 Tolerances in the system and map inaccuracies will sometimes limit how precisely the vehicle position is
indicated. Examples of this include:
– Driving on roads not shown on the map (map matching is not possible).
– Driving on a road that winds in one direction, such as a loop bridge, an interchange, or a spiral parking
garage.
– Driving on a road with a series of sharp hair-pin turns.
– Driving near a gradual highway exit or transition.
– Driving on one of two close parallel roads.
– Making many 90 degree turns.
– The direction to destination icon or the destination icon shown or the map may be up to several
hundred feet away from the actual location.
08/08/21 14:06:24 61SNR030_230_0093
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Overview
23-101
System Description
The navigation system is a highly sophisticated, hybrid locating system.
The navigation unit uses global positioning system (GPS) satellite signals, internal yaw and vehicle speed inputs, and
a map database to show where the vehicle is and to help guide you to a desired destination.
The navigation unit’s GPS receiver receives signals from the GPS, a network of 24 satellites in orbit ar ound the earth.
By receiving signals from several of these satellites, the navigation system can determine the latitude, l ongitude, and
elevation of the vehicle.
Signals from the system’s yaw rate sensor (inside the navigation unit) detects turns, and the ECM/PCM vehicle speed
pulse (VSP) and reverse signal enable the system to keep track of the vehicle’s speed and direction of travel. The
advantage of this hybrid system is that the system can track your position if either the GPS signal or the vehicle speed
signal is missing. For instance, when in a tunnel (no GPS), the speed signal is used to update your position on the map.
Alternately, while the vehicle is being transported on a ferry, GPS signals can show the vehicle position on the map as
it crosses the water.
The navigation system uses the location, direction, and speed information to display the appropriate map and
calculate a route to the destination entered. As you drive to a destination, the system provides both visual and audio
guidance. Audio guidance is sent to the audio unit, and an RGB graphics color signal is sent to the navigation display.
This navigation system also has voice recognition that allows voice control of most of the navigation, and audio
functions. The voice control switches (navigation TALK and navigation BACK buttons on the steering wheel) activate
the voice control system. The microphone on the ce iling receives your voice commands. For more information on this
feature, consult the navigation owner’s guide.
The illumination signal is used by the navigation unit to automatically switch the display mode between the Night and
Day display modes. When the headlights are on, the dash brightness control setting full brightness overrides the Night
display mode, and allows a daytime navigation display with the lights on.
When the navigation system is giving voice guidance commands, the front speakers are muted. When the voice
control system is being used (navigation TALK button pressed), all of the speakers are muted.
The internal GA-Net II bus passes information back and forth between the navigation display, the navigation unit, and
the audio system components. The information passed on this bus are touch button commands, audio muting signal,
audio (radio and XM), and any open in these bus lines can affect the navigation system or other audio accessory
operation.
The clock on the navigation display is set and maintained by the navigation unit. The time is automatically adjusted for
daylight savings, and time zone changes while driving. The time can be adjusted in setup.
Additional information is available about the navigation components following the System Diagram. A glossary of
terms that are used throughout this section follows the detailed information.
The Navigation System Manual in the glove box covers all of the system functions and settings. Use this as a resource
when evaluating a client concern.
(cont’d)
08/08/21 14:06:26 61SNR030_230_0104
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