2006 ACURA CSX horn

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Power Door Locks/Keyless
No.Symptom Check Items
22-126Keyless/Power Door Locks/Security System
Symptom Troubleshooting
1. If the door lock system works properly, but the keyless operation does not, refer to the immob
ilizer-keyless control
unit symptom troubleshooting information (see page 22- 321).
NOTE: The door lock system does not function when:  Any of the doors is open.
 Ignition key is in the ignition key switch.
 Ignition switch is ON (II).










1 The doors will not lock or unlock. MICU input test (see page 22-
131).
Driver’s door key cylinder switch test (see page 22-140).
Door lock switch test (see page 22-139).
Door lock knob switch test (see page 22-138).
2 The doors will not lock. MICU input test (see page 22- 131).
Door lock knob switch test (see page 22-138).
Driver’s door switch test (check the door switch ON/OFF
information with the HDS).
3 The doors will not unlock. MICU input test (see page 22- 131).
Door lock knob switch test (see page 22-138).
Door switch test (check the door switch ON/OFF
information with the HDS).
4 Keyless operation does not work (LOCK, UNLOCK, PANIC). Symptom troubleshooting (see page 22-127).
5 Doors will not unlock with the transmitter, but will unlock with the
door switch. Symptom troubleshooting (see page 22-129).
6 Doors will not lock with the transmitter, but will lock with the door switch. Symptom troubleshooting (see page 22-129).
7 Doors automatically relock after being unlocked with the transmitter even
though a door has been opened. Symptom troubleshooting (see page 22-130).
8 The horn does not sound when PANIC button on the transmitter pressed. Symptom troubleshooting (see page 22-129).
9 Keyless operation will work even though the ignition key is in the
ignition switch. Ignition key switch test (see page 22-207).
: If only one door is not working properly, check that door’s lock actuator first, then check the other items listed in this table.
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µ
µ
µ
µ
µ
µ µ
µ
µ
µ
µ
µ
µ
µ
Doors will not unlock (or lock) with the
transmitter, but will unlock (lock) with the
door switch The horn does not sound and/or the
headlights do not flash when the PANIC
button on the transmitter is pressed
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
YES
NO
22-12922-129
NOTE: Before troubleshooting, check the B-CAN DTCs.
If any DTC is indicated, troubleshoot the indicated DTC
first.
1. Turn the ignition switch to LOCK (0).
2. Remove the ignition key from the ignition switch.
3. Close and lock the doors.
4. Try to lock/unlock the doors with the keyless transmitter.
Intermittent failure. The system is OK at this
time.
Go to step 5.
5. Open the driver’s door.
Faulty ignition key switch, or short to ground
on the ignition switch PNK wire. Repair as
necessary.
Go to step 6.
6. Do the transmitter test (see page 22-142).
Substitute a known-good MICU and
recheck.
Replace the transmitter (see page 22-142). NOTE: Before troubleshooting, check the B-CAN DTCs.
If any DTC is indicated, troubleshoot the indicated DTC
first.
1. Press the PANIC button.
Go to step 3.
Go to step 2.
2. Press the horn button.
Go to step 3.
Check the horn circuit.
3. Turn the headlight switch ON.
Go to step 4.
Check the lighting circuit.
4. Do the transmitter test (see page 22-142).
Substitute a known-good MICU and
recheck.
Replace the transmitter (see page 22-142).
Do t he d oor l ock act uat or s w or k nor mal l y ?
Does t he k ey -i n r emi nd er chi me sound ?
Is the transmitter OK ? Does t he hor n sound ?
Does t he hor n sound ?Do t he head l i ght s come on?Is the transmitter OK ?
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Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
22-133
5. With the connector still disconnected, do these input tests at the following connectors.
 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 6.



















G16 WHT Under all
conditions Measure the voltage to ground:
There should be battery voltage. Blown No. 12 (15 A) fuse in the
under-hood fuse/relay box
An open in the wire
G18 WHT Under all conditions Measure the voltage to ground:
There should be battery voltage. Blown No. 4 (50 A) fuse in the
under-hood fuse/relay box
An open in the wire
G7 LT GRNUnder all
conditions Connect terminals G16 and G7
with a jumper wire
momentarily:
The horn should sound. Poor ground (body ground)
Blown No. 12 (15 A) fuse in the
under-hood fuse/relay box
Faulty horn
An open in the wire
E20 GRN Under all conditions Connect terminals G2 and E20
with a jumper wire:
The trunk release actuator
should work (Trunk lid should
open). Poor ground (G701)
Faulty trunk release actuator
An open in the wire
N7 BLU Under all conditions Connect battery power to
terminal N13 and ground
terminal N7 momentarily:
The driver’s door lock actuator
should unlock. Faulty driver’s door lock
actuator
An open in the wire
N13 YEL
M8 YEL Under all conditions Connect battery power to
terminal M8 and ground
terminal M10 momentarily:
The front passenger’s door lock
actuator should unlock. Faulty front passenger’s door
lock actuator
An open in the wire
M10 BLU
E1 YEL Under all conditions Connect battery power to
terminal E1 and ground
terminal E21 momentarily:
The right rear door lock actuator
should unlock. Faulty right rear door lock
actuator
An open in the wire
E21 BLU
E14 YEL Under all
conditions Connect battery power to
terminal E14 and ground
terminal E31 momentarily:
The left rear door lock actuator
should unlock. Faulty left rear door lock
actuator
An open in the wire
E31 BLU
(cont’d)
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22-145
Horns
Component Location Index
HORN SWITCH
CABLE REEL
HORN RELAY CIRCUIT
(Built into the MICU)
HORN
UNDER-DASH FUSE/RELAY BOX Test, page 22-147
Replacement, page 24-200
Test/Replacement, page 22-146
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22-14622-146 Horns
Circuit Diagram
Horn Test/Replacement
F31 G16
G7
Q3
HORN
* : Ground through steering column. * MICU
ORN LT GRN (15 A) No. 12
WHT
WHT BATTERY
UNDER-DASH
FUSE/RELAY BOX
BRAKE
LIGHTS
CABLE
REEL
HORN
SWITCH UNDER-HOOD
FUSE/RELAY BOX
D8
10 3
11A B
AB
1. Remove the front bumper (see page 20-146).
2. Disconnect the 1P connector (A) from the horn (B).
3. Test the horn by connecting battery power to the
terminal (A) and grounding the bracket (B). The
horn should sound.
4. If it fails to sound, replace it.
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22-147
Horn Switch Test
A A
B
C
1. Remove the steering column covers (see page
17-9).
2. Disconnect the cable reel 20P connector (A) from the dashboard wire harness.
3. Using a jumper wire, connect dashboard wire harness 20P connector terminal No. 10 to body
ground. The horn should sound.
 If the horn sounds, go to step 4.
 If the horn does not sound, check these items: – No. 12 (15 A) fuse in the under-hood fuse/relay box.
– MICU.
– Horn.
– Anopeninthewire. 4. Reconnect the cable reel 20P connector (A) to the
dashboard wire harness.
5. Remove the driver’s airbag assembly (see page 24-188), and disconnect the horn switch 1P positive
terminal (B) from the cable reel (C).
6. Using a jumper wire, connect the 1P connector to body ground.
 If the horn sounds, replace the driver’s airbag assembly.
 If the horn does not sound, check these items: – Cable reel.
– Anopeninthewire.
Wire side of
female terminals
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22-155
Circuit Diagram - Brake Lights
G16 F31
2 1
LT GRN
LT GRN
LT GRN E34 F30
MICU
2 3 2
1
G701 BLK
BLK
G701
ECM/PCM
LT GRN
LT GRN LT GRN WHT
G701 BLK
WHT
No. 12 (15 A)
BATTERY UNDER-HOOD
FUSE/RELAY BOX
MICU
(Horn circuit)
BRAKE PEDAL
POSITION SWITCH
(Closed: Pedal pressed)
LEFT BRAKE
LIGHT (21 W) HIGH MOUNT
BRAKE LIGHT
(21 W)
UNDER-DASH
FUSE/RELAY BOX
UNDER-DASH
FUSE/RELAY BOX
D8
F25
2 3
LT GRN
BLK
G701
LT GRN
HIGH MOUNT
BRAKE LIGHT
(LED)
(TYPE S model)
(Except TYPE S model) RIGHT BRAKE
LIGHT (21 W)
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General PrecautionsSteering-related Precautions
Cable Reel Alignment
24-13
Precautions and Procedures
NOTE: Some systems store data in memory that is lost
when the battery is disconnected. Before disconnecting
the battery, refer to Battery Terminal Disconnection and
Reconnection (see page 22-68).
Please read the following precautions carefully before
servicing the airbag system. If the instructions
described in this manual are not properly followed, or
the airbags could accidentally deploy and cause
damage or injuries. Except when doing electrical inspections, always turn the ignition switch to LOCK (0), disconnect the
negative cable from the battery, then wait at least
3 minutes before starting work.
NOTE: The SRS memory is not cleared even if the
ignition switch is turned to LOCK (0), or the battery
cables are disconnected from the battery.
 Use replacement parts which are manufactured to the same standards and quality as the original parts. Do
not install used SRS parts. Use only new parts when
making SRS repairs.
 Carefully inspect any SRS part before you install it. Do not install any part that shows signs of being
dropped or improperly handled, such as dents, cracks
or deformation.
 Before disconnecting the SRS unit connectors, always disconnect the appropriate SRS parts
connectors.  Use only a digital multimeter to check the system. If it
is not a Honda multimeter, make sure its output is
10 mA (0.01 A) or less when switched to the lowest
value in the ohmmeter range. A tester with a higher
output could cause accidental deployment and
possible injury.
 Do not put objects on the front passenger’s airbag.
 The original audio and navigation system have a coded theft protection circuit. Make sure you have the
anti-theft codes for the audio system or navigation
system (if equipped), then write down the audio
presets before disconnecting the negative cable from
the battery.
 Before returning the vehicle to the client, enter the anti-theft codes for the audio system or navigation
system (if equipped), then enter the audio presets; set
the clock.
 Misalignment of the cable reel could cause an open in the wiring, making the SRS system, remote steering
wheel controls, or the horn inoperative. Center the
cable reel whenever you do the following (see step 6
on page 24-202).
– Installation of the steering wheel
– Installation of the cable reel
– Installation of the steering column
– Other steering-related adjustment or installation
 Do not disassemble the cable reel.
 Do not apply grease to the cable reel.
 If the cable reel shows any signs of damage, replace it with a new one. For example, if the cable reel does
not rotate smoothly, replace it.
(cont’d)
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