relay ACURA CSX 2006 Service Repair Manual

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YES
NO
YES
NO
YES
NO
YES
NO
Audio unit power switch will not turn on (No
information display and no sound)
(without navigation)
23-20323-203
NAVIGATION UNIT CONNECTOR A (24P)
RADIO GND (BLK)
11. Turn the ignition switch to ON (II).
12. Measure the voltage between navigation unitconnector A (24P) terminal No. 12 and body ground.
Replace the navigation unit (see page 23-355).
Repair open in the wire between navigation
unit connector A (24P) terminal No. 12 and body
ground (G 505) (see page 22-32). NOTE:
 Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Push the power switch ON to see if audio unit turns ON.
Intermittent failure, the system is OK at this
time.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 23 (10 A) fuse in the under-hood fuse/relay box and the No. 35 (7.5 A) fuse in the
under-dash fuse/relay box.
Go to step 5.
Replace the fuse(s), and recheck.
5. Remove the audio unit (see page 23-256). Check that the audio unit is properly connected.
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
Go to step 6.
Reconnect the connector, and recheck the
function.
(cont’d)
Wire side of female terminals
I s t her e l ess t han 0.1 V on bot h t er mi nal s? Does t he aud i o uni t oper at e pr oper l y , and d oes t he
aud i o sound nor mal ?
Ar e t he f uses OK ?I s i t connect ed pr oper l y ?
08/08/21 14:09:53 61SNR030_230_0206
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YES
NO YES
NO
23-204Audio System
Symptom Troubleshooting (cont’d)
AUDIO UNIT CONNECTOR A (17P)
BBACKUP
(WHT)
ACC RADIO (PUR) AUDIO UNIT CONNECTOR A (17P)
RADIO GND (BLK)
6. Disconnect audio unit connector A (17P).
7. Turn the ignition switch to ON (II).
8. Measure the voltage between audio unit connectorA (17P) terminal No. 14 and body ground, and
between terminal No. 17 and body ground.
Go to step 9.
Repair open in the wire(s) between the No. 23
(10 A) fuse in the under-hood fuse/relay box and
No. 35 (7.5 A) in the under-dash fuse/relay box and
the audio unit.
9. Turn the ignition switch to LOCK (0).
10. Reconnect audio unit connector A (17P).
11. Turn the ignition switch to ON (II). 12. Measure the voltage between audio unit connector
A (17P) terminal No. 9 and body ground.
Replace the audio unit (see page 23-256).
Repair open in the wire between audio unit
connector A (17P) terminal No. 9 and body ground
(G505) (see page 22-38).
Wire side of female terminals Wire side of female terminals
Is there battery voltage on the both terminals?
Is t her e l ess t han 0.1 V ?
08/08/21 14:09:53 61SNR030_230_0207
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Speaker Terminal Wire color
YES
NO YES
NO
23-208Audio System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR A (24P)
STEREO AMPLIFIER CONNECTOR A (20P)
BAUDIO
AMP
(LT GRN)
13. Check for continuity between body ground and the
following terminals of navigation unit connector A
(24P).
Driver’s door speaker,
Left tweeter A23 ( ) LT GRN
A22 ( ) PNK
Front passenger’s
door speaker,
Right tweeter A19 ( ) GRY
A18 ( ) BRN
Left rear speaker A11 ( ) YEL A10 ( ) BRN
Right rear speaker A7 ( ) BLU A6 ( ) ORN
Repair short to body ground in the wire(s)
between the navigation unit and the speaker(s).
Substitute a known-good navigation unit
(see page 23-355), and recheck. If the symptom/
indication goes away, replace the original
navigation unit. 14. Measure the voltage between stereo amplifier
connector A (20P) terminal No. 10 and body ground.
Go to step 15.
Repair open in the wire between the No. 17
(15 A) fuse in the under-hood fuse/relay box and
stereo amplifier connector A (20P) terminal
No. 10.
Wire side of female terminals Wire side of female terminals
Is there continuity?
Is there battery voltage?
08/08/21 14:10:45 61SNR030_230_0211
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YES
NO
YES
NO YES
NO
23-209
STEREO AMPLIFIER CONNECTOR A (20P)
ACC RADIO (PUR)
STEREO AMPLIFIER CONNECTOR B (14P) AMP ON (LT BLU) STEREO AMPLIFIER CONNECTOR A (20P)
GND (BLK)
15. Turn the ignition switch to ON (II).
16. Measure the voltage between stereo amplifierconnector A (20P) terminal No. 9 and body ground.
Go to step 17.
Repair open in the wire between the No. 35
(7.5 A) fuse in the under-dash fuse/relay box and
stereo amplifier connector A (20P) terminal No. 9.
17. Measure the voltage between stereo amplifier connector B (14P) terminal No. 7 and body ground.
Go to step 18.
Repair open in the wire between the stereo
amplifier connector B (14P) terminal No. 7 and
navigation unit connector A (24P) terminal
No. 17. 18. Measure the voltage between stereo amplifier
connector A (20P) terminal No. 20 and body ground.
Go to step 19.
Repair open in the wire between stereo
amplifier connector A (20P) terminal No. 20 and
body ground (G 601).
19. Turn the ignition switch to LOCK (0).
(cont’d)
Wire side of female terminalsWire side of female terminals Wire side of female terminals
Is there battery voltage?
Is there battery voltage? I s t her e l ess t han 0.1 V on bot h t er mi nal s?
08/08/21 14:10:46 61SNR030_230_0212
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Navigation unit button illumination does not
work (with navigation)
YES
NO
YES
NO YES
NO
YES
NO
23-225
NAVIGATION UNIT CONNECTOR A (24P)
ILL (RED)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR ILL (RED)
NAVIGATION UNIT CONNECTOR A (24P) ILL (GRY)NOTE: Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn the combination lighting switch to the parking light position.
3. Check the illumination of the navigation unit buttons.
Intermittent problem: the navigation unit is
OK at this time. Check for loose or poor
connections at the navigation unit connector A
(24P).
Go to step 4.
4. Check the illumination of several other buttons not related to navigation system.
Go to step 5.
Troubleshoot the interior lights. Start by
checking the No. 14 (7.5 A) fuse in the under-dash
fuse/relay box. If the fuse is OK, check for an open
in the wire between the under-dash fuse/relay box
and the navigation unit.
5. Turn the ignition switch to LOCK (0).
6. Disconnect navigation unit connector A (24P). NOTE: Eject all the discs before removing the navigation unit to prevent damaging the CD player’s load
mechanism.
 Remove the PC card before removing the navigation unit.
7. Disconnect gauge control module (tach) 36P connector. 8. Check for continuity between navigation unit
connector A (24P) terminal No. 1 and gauge control
module (tach) 36P connector terminal No. 14.
Go to step 9.
Repair open in the wire between the gauge
control module and the navigation unit.
9. Turn the ignition switch to ON (II).
10. With the headlight switch still on, measure the voltage between navigation unit connector A (24P)
terminal No. 13 and body ground.
Check the connections at navigation unit
connector A (24P). If all connections are OK, replace
the navigation unit (see page 23-355).
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminalsAre the buttons illuminated? Are the buttons illuminated? Is there continuity?
Is there battery voltage?
08/08/21 14:10:50 61SNR030_230_0228
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Audio unit button illumination does not
work (without navigation)
YES
NO
YES
NO YES
NO
YES
NO
23-226Audio System
Symptom Troubleshooting (cont’d)
AUDIO UNIT CONNECTOR A (17P)
ILL (RED)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR ILL (RED)
AUDIO UNIT CONNECTOR A (17P) ILL (GRY)NOTE: Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn the combination lighting switch to the parking light position.
3. Check the illumination of the audio unit buttons.
Intermittent problem: the audio unit is OK at
this time. Check for loose or poor connections at
the audio unit connector A (17P).
Go to step 4.
4. Check the illumination of several other buttons not relatedtotheaudiosystem.
Go to step 5.
Troubleshoot the interior lights. Start by
checking the No. 14 (7.5 A) fuse in the under-dash
fuse/relay box. If the fuse is OK, check for an open
in the wire between the under-dash fuse/relay box
and the audio unit.
5. Turn the ignition switch to LOCK (0).
6. Disconnect audio unit connector A (17P). NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
7. Disconnect gauge control module (tach) 36P connector. 8. Check for continuity between audio unit connector
A (17P) terminal No. 1 and gauge control module
(tach) 36P connector terminal No. 14.
Go to step 9.
Repair open in the wire between the gauge
control module and the audio unit.
9. Turn the ignition switch to ON (II).
10. With the headlight switch still on, measure the voltage between audio unit connector A (17P)
terminal No. 10 and body ground.
Check the connections at audio unit
connector A (17P). If all the connections are OK,
replace the audio unit (see page 23-256).
Repair open in the wire between the under-
dash fuse/relay box and the audio unit.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Are the buttons illuminated? Are the buttons illuminated? Is there continuity?
Is there battery voltage?
08/08/21 14:10:50 61SNR030_230_0229
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Display does not dim or brighten with
dimmer (without navigation)
YES
NO
YES
NO
YES
NO YES
NO
23-227
AUDIO UNIT CONNECTOR E (14P)
NOTE:
 Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn the combination light switch ON and OFF to see if the symptom can be duplicated.
Go to step 3.
Operation is normal.
3. Turn the combination light switch to OFF.
4. Rotate the illumination control dial.
Operation is normal.
Go to step 5.
5. Disconnect, and check audio unit connector A (17P) for a loose or a poor connection.
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
Go to step 6.
Operation is normal.
6. Turn the ignition switch to LOCK (0).
7. Remove the audio unit (see page 23-256). 8. Turn the ignition switch to ON (II).
9. Measure the voltage between audio unit connector
A (17P) terminals No. 1 and No. 10. Rotate the dash
brightness controller buttons to see if the voltage
changes.
Substitute a known-good audio unit
(see page 23-256), and recheck. If the symptom/
indication goes away, replace the original audio
unit. If symptom is still present, substitute a known-
good center panel display and recheck. If the
symptom/indication goes away, replace the
original center panel display (see page 23-256).
Repair open in the wire between the under-
dash fuse/relay box and the gauge control
module.
Wire side of female terminals
Is it duplicated?
Does the illumination dim and brighten normally asy ou r ot at e t he d i al ?
Reconnect aud i o uni t connect or A ( 17 P), andr echeck t he sy mpt om; d oes i t st i l l appear ? Does t he v ol t age change?
08/08/21 14:10:51 61SNR030_230_0230
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General Operation
Anti-theft Feature
Symptom Diagnosis
Self-Inertial Navigation LimitationsGlobal Positioning System (GPS) Limitations
23-266Navigation System
General Troubleshooting Information
Refer to the navigation system manual for the
navigation system operating procedures.
The navigation system and audio unit have a coded
theft protection circuit. Make sure you have the anti-
theft security code before:
 Disconnecting the battery.
 Disconnecting the navigation unit connector A (24P) and C (8P).
 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 to ON (II). Enter the 4-digit
anti-theft security code, 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 ECU Info diagnostic screens (see page 23-305).
Alternatively, you can find the serial number on the
underside label which is located on the navigation unit
in the trunk.
When replacing the navigation unit, be sure to give the
customer the new anti-theft security code.
Certain circumstances and system limitations will result
in occasional vehicle positioning errors. Some client’s
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 client’s
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 discrepancies between the
vehicle’s actual position and the indicated vehicle’s
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
– Very bumpy roads
 Tolerances in the system and map inaccuracies sometimes limit how precisely the vehicle’s 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 GPS cannot detect the vehicle’s position or
elevation during the following instances:  For the first 5 to 10 minutes after reconnecting the battery (this process can take as long as 45 minutes).
 When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, inside
parking structures or large trucks.
 When the GPS antenna is blocked by metallic window tinting or by an object placed above it in the
vehicle. The GPS antenna requires a clear
unobstructed view of the sky.
 When there is no satellite signal output (signal output is sometimes stopped for sate llite servicing).
 When the satellite signals are blocked by the operation of some electronic aftermarket accessories
including, but not limited to non-OEM in-dash
entertainment units (radio, CD players/changers,
radar detectors and theft recovery systems) and cell
phones placed near the navigation system.
08/08/21 14:14:21 61SNR030_230_0269
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Navigation Unit Inputs and Outputs for Connector A (24P)
Navigation Unit Connector A (24P) TerminalNumber Wire Color Terminal Name Description Voltage (about) Symptom
23-291
1 RED ILL ( )
Ground for
illumination light With full dash
lights brightness,
0VIf open: When brightness = Auto, night mode for the
display is inoperative when lights on.
If short to ground: No change to display.
12 BLK RADIO GND (Ground)Ground for display
unit 0 V
If open: No change to display.
If short to ground: No change to display.
13 GRY ILL ( ) (Illumination
positive)Parking light on
signal from dash
and console lights Light on =
battery voltage,
Lights off = 0 VIf open: When brightness = Auto, night mode for the
display is inoperative when lights on.
If short to ground: Blows fuse No. 14 (7.5 A) in
under-dash fuse/relay box.
15 BLU VSP (Vehicle speed
pulse)Vehicle speed
pulse signal from
ECM/PCM Pulses 0 5 V:
Average 2.5 V,
when movingIf open: No vehicle speed pulses.
Diagnostic screen Car Status, VSP Navi = 0.
If short to ground: No vehicle speed pulses.
Diagnostic screen Car Status, VSP Navi = 0.
24 WHT B ( B power
source)Continuous power
source
Battery voltage If open: Screen completely off (no backlight visible).
If short to ground: Blows fuse No. 23 (10 A) in the
under-hood fuse/relay box.
(cont’d)
Wire side of female terminals
08/08/21 14:15:46 61SNR030_230_0294
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Navigation Unit Inputs and Outputs for Connector C (8P)
Navigation Unit Connector C (8P)TerminalNumber Wire Color Terminal Name Description Voltage (about) Symptom
23-293
1 WHT B BACK UP Continuous power
sourceBattery voltage If open: Display picture goes out (display back light
still on). NOTE: System will reboot to enter code
screen.
If short to ground: Blows fuse No. 23 (10 A) in the
under-dash fuse/relay box.
4 BLK GND Ground for navigation unit0 V If open: No effect on system.
If short to ground: No effect on system.
7 BRN BACK LT Reverse signal of select laver from
Multiplex
integrated Control
unit (A/T) or
backup light switch
(M/T)In reverse,
battery voltage:
Otherwise0V
If open: Navigation never sees the reverse signal
and back-up camera does not come on when in
reverse. Diagnostic screen Car Status, Back = 0.
If short to ground: Blows fuse No. 10 (7.5 A) in the
under-dash fuse/relay box.
(cont’d)
Wire side of female terminals
08/08/21 14:15:46 61SNR030_230_0296
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