hood open ACURA CSX 2006 Service Service Manual

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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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Cavity WireTest condition Test: Desired result Possible cause if desired result is not
obtained
22-165
6. Reconnect the connectors to the under-dash fuse/relay box, and 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, the MICU must be faulty; replace the under-dash fuse/relay box.


































G2 ORN Under all conditions Measure the voltage between
terminal G2 and body ground:
There should be battery voltage.Blown No. 23 (10 A) fuse in the under-
hood fuse/relay box
An open in the wire
G18 WHT Under all conditions Measure the voltage between terminal G18 and body ground:
There should be battery voltage.Blown No. 4 (50 A) fuse in the under-
hood fuse/relay box
An open in the wire
E6 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G602)
An open in the wire
E33 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G601)
An open in the wire
F20 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G401)
An open in the wire
T34 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G501)
An open in the wire
S1 ·
S5 ORN
·
BLK Combination light switch OFF Measure the voltage between
terminals S1 and S5:
There should be less than 1 V. Faulty combination light switch
An open in the wire
Combination light switch in any
other position than OFF Measure the voltage between
terminals S1 and S5:
There should be more than 5 V. Faulty combination light switch
A short to ground in the wire
S11 ·
S5 PNK
·
BLK Combination light switch
(Headlight position) ON
Measure the voltage between
terminals S11 and S5:
There should be less than 1 V. Faulty combination light switch
An open in the wire
Combination light switch OFF Measure the voltage between terminals S11 and S5:
There should be more than 5 V. Faulty combination light switch
A short to ground in the wire
S12 ·
S5 RED
·
BLK Combination light switch lever
pulled (Passing)
Measure the voltage between
terminals S12 and S5:
There should be less than 1 V. Faulty combination light switch
An open in the wire
Combination light switch lever
released from passing position Measure the voltage between
terminals S12 and S5:
There should be more than 5 V. Faulty combination light switch
A short to ground in the wire
S13 ·
S5 GRY
·
BLK Combination light switch
(SMALL position) ON
Measure the voltage between
terminals S13 and S5:
There should be less than 1 V. Faulty combination light switch
An open in the wire
Combination light switch OFF Measure the voltage between terminals S13 and S5:
There should be more than 5 V. Faulty combination light switch
A short to ground in the wire
S16 ·
S5 LT BLU
·
BLK Combination light switch
(Dimmer) in high beam position
Measure the voltage between
terminals S16 and S5:
There should be less than 1 V. Faulty combination light switch
An open in the wire
Combination light switch
(Dimmer) in low beam position Measure the voltage between
terminals S16 and S5:
There should be more than 5 V. Faulty combination light switch
A short to ground in the wire
C3 ORN Ignition switch ON (II) Measure the voltage between terminal C3 and body ground:
There should be battery voltage.Faulty ignition switch
An open in the wire
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YES
NO
LEFT HEADLIGHT
RIGHT HEADLIGHT
YES
NO
22-172Exterior Lights
HID Lamp System Troubleshooting (cont’d)
HID UNIT 2P CONNECTOR
LEFT HEADLIGHT (PUR)
RIGHT HEADLIGHT (GRN)
HID UNIT 2P CONNECTOR (LEFT HEADLIGHT)PUR
UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P) HID UNIT 2P CONNECTOR (RIGHT HEADLIGHT) GRN
16. Measure the voltage between the HID unit 2P
connector terminal No. 2 and body ground.
Substitute a known-good HID unit, and
recheck. If the symptom/indication goes away,
replace the original HID unit.
Go to step 17.
17. Disconnect under-dash fuse/relay box connector G (21P) and/or F (34P) .1: Left headlight
2: Right headlight 18. Check for continuity between under-dash fuse/relay
box G (21P) terminal No. 17 or F (34P) terminal
No. 4 and HID unit 2P connector terminal No. 2.
Replace the under-dash fuse/relay box.
Repair an open in the wire between the
under-hood fuse/relay box and the HID unit.
12
Wire side of female terminals
Wire side of female terminalsWire side of female terminals
Wire side of female terminals Wire side of female terminals
Is there battery voltage?
Is there continuity?
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22-17422-174 Exterior Lights
Headlight Adjustment (cont’d) Headlight Replacement
U: UP
D: DOWN
A A
D B
C
A
5. If necessary, open the hood and adjust the
headlights to local requirements by turning the
adjusters (A). A transient high tension (25,000 V) occurs at the bulb sockets or the high intensity discharge (HID)
lamps when the combination light switch is turned
ON, it may cause serious electrical shock or
electrocution if you do not observe the cautions.
Do not service the headlights assembly in wet
conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
1. Remove the front bumper (see page 20-146).
2. Remove the connectors (A) from the headlight assembly (B).
3. Remove the five bolts, then remove the headlight.
4. Remove the bolt (C) and the corner upper beam (D) from the headlight.
5. Install the headlight in the reverse order of removal.
6. After replacement, adjust the headlight to local requirements.
The illustration is shown from
back side of left headlight.
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22-17422-174 Exterior Lights
Headlight Adjustment (cont’d) Headlight Replacement
U: UP
D: DOWN
A A
D B
C
A
5. If necessary, open the hood and adjust the
headlights to local requirements by turning the
adjusters (A). A transient high tension (25,000 V) occurs at the bulb sockets or the high intensity discharge (HID)
lamps when the combination light switch is turned
ON, it may cause serious electrical shock or
electrocution if you do not observe the cautions.
Do not service the headlights assembly in wet
conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
1. Remove the front bumper (see page 20-146).
2. Remove the connectors (A) from the headlight assembly (B).
3. Remove the five bolts, then remove the headlight.
4. Remove the bolt (C) and the corner upper beam (D) from the headlight.
5. Install the headlight in the reverse order of removal.
6. After replacement, adjust the headlight to local requirements.
The illustration is shown from
back side of left headlight.
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Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
22-191
6. Reconnect connectors to the under-dash fuse/relay box, and 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, the MICU must be faulty; replace the under-dash fuse/relay box.























G2 ORN Under all conditions Measure the voltage between
terminal G2 and body ground:
There should be battery voltage.Blown No. 23 (10 A) fuse in the
under-hood fuse/relay box
An open in the wire
G6 YEL Under all conditions Measure the voltage between terminal G6 and body ground:
There should be battery voltage.Blown No. 10 (10 A) fuse in the
under-hood fuse/relay box
An open in the wire
E6 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G602)
An open in the wire
E33 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G601)
An open in the wire
F20 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G401)
An open in the wire
T34 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G501)
An open in the wire
R1 WHT Under all conditions Measure the voltage to ground: There should be battery voltage.Faulty under-dash fuse/relay box
Q11 GRN Hazard warning switch ON Measure the voltage to ground:
There should be battery voltage. Blown No. 23 (10 A) fuse in the
under-hood fuse/relay box
Faulty hazard warning switch
An open in the wire
S18 ·
S5 BRN
·
BLK Turn signal switch in
right position
Measure the voltage between
terminals S18 and S5:
There should be less than 0.5 V. Faulty combination light switch
An open in the wire
Turn signal switch in
left or neutral
position Measure the voltage between
terminals S18 and S5:
There should be 5 V or more. Faulty combination light switch
A short to ground in the wire
S19 ·
S5 LT
GRN ·
BLK Turn signal switch in
left position
Measure the voltage between
terminals S19 and S5:
There should be less than 0.5 V. Faulty combination light switch
An open in the wire
Turn signal switch in
right or neutral
position Measure the voltage between
terminals S19 and S5:
There should be 5 V or more. Faulty combination light switch
A short to ground in the wire
08/08/21 14:27:44 61SNR030_220_0193
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22-194Interior Lights
Circuit Diagram
D A
B
A C
GRNMICU
UNDER-DASH FUSE/RELAY BOX
GRNE37 E3
LT GRN BRNE17 E2
GRYK4
(8 W) (8 W)
1
(Without moonroof)
LT BLU
PNKDOOR
OFF
PNK
BLU
3
LT BLU LT BLU
LT BLU
(With moonroof)
1
2
(8 W) (8 W)
PNK 1
ON OFF
(8 W) RED
UNDER-HOOD FUSE/RELAY BOX
No. 22 (7.5 A)
No. 1 (BAT) (100 A)
BATTERY
CEILING
LIGHT
INTERIOR
LIGHT SWITCH
(In the moonroof
switch)
RIGHT REAR
DOOR
SWITCH
(Closed:
Door open)
LEFT REAR
DOOR
SWITCH
(Closed:
Door open)
FRONT
PASSENGER’S
DOOR SWITCH
(Closed:
Door open)
DRIVER’S
DOOR
SWITCH
(Closed:
Door open) D2
1 1
1
9*2 8*1
1*1
7*2 LT BLU
LT BLU
FRONT
PASSENGER’S
DOOR
COURTESY
LIGHT LT BLU
VANITY
MIRROR
LIGHTS *2
No. 22 (7.5 A)FUSE
(UNDER-HOOD
FUSE/RELAY BOX) LT BLU
GRN (3.4 W)
DRIVER’S
DOOR
COURTESY
LIGHT
GRN1 No. 22 (7.5 A)FUSE
(UNDER-HOOD
FUSE/RELAY BOX)
LT GRN
GRN (3.4 W)
FRONT
PASSENGER’S
DOOR
COURTESY
LIGHT BLU
BLK 3
2
G701 E36
BLU TRUNK LID
LATCH
SWITCH
(Closed:
Trunk lid open)BLU
TRUNK
LIGHT
FRONT
INDIVIDUAL
MAP LIGHTS
FRONT
INDIVIDUAL
MAP LIGHTS
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22-195
R10LT BLU
K5
G3
E38
CLOSE OPEN
1
2 (3.4 W)
LT BLU
BLK GRY
GRY GRY
RED
(5 W)
1
WHT
2
(LED)
GRN
G502 AMBIENT
LIGHT
DASH LIGHTS
BRIGHTNESS
CONTROLLER TRUNK
LIGHT
UNDER-DASH
FUSE/RELAY BOX
No. 14 (7.5 A) FUSE
(UNDER-DASH
FUSE/RELAY BOX) GLOVE
BOX
LIGHTGLOVE
BOX
LID
GRY
(LED)
RED 2 1
DRIVER’S
FOOTWELL
LIGHT
DASH LIGHTS
BRIGHTNESS
CONTROLLER
GRY
(TYPE S model)
BLU
DRIVER’S
DOOR
COURTESY
LIGHT
TRUNK LID
LATCH
SWITCH
GRY(LED)
RED 2 1
FRONT
PASSENGER’S
FOOTWELL
LIGHT
DASH LIGHTS
BRIGHTNESS
CONTROLLER
LT BLU
DRIVER’S
VANITY
MIRROR
LIGHT
SWITCH
DRIVER’S
VANITY
MIRROR
LIGHT (2 W)DRIVER’S
SUNVISOR
1
2 LT BLU
PASSENGER’S
VANITY
MIRROR
LIGHT
SWITCH
PASSENGER’S
VANITY
MIRROR
LIGHT (2 W)PASSENGER’S
SUNVISOR
1
2
G502 BLK *2
BLK BLK
No. 22 (7.5 A) FUSE
(UNDER-HOOD
FUSE/RELAY BOX)
C
D B
5*3
4*4
3*2
2*2
5*4
3*3 *1: ’06 07 models
*2: ’08 09 models
*3: ’06 07 models with moonroof
*4: ’06 07 models without moonroof
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22-203
Circuit Diagram
5 6
R13
ORN
LT BLU
BLK5
7
G501 LOCK
WHT
T23
BRN T24
LT GRN
6
4
UNDER-DASH FUSE/RELAY BOX 7*2
1*1 8*1
9*2K5
G3 D2
PG
SG
PNKR16
G501 BLK
T34
BLK
G401 F20
E2
GRY
LT BLU LT BLU
CEILING LIGHT BLU
PNK FRONT
INDIVIDUAL
MAP LIGHTS
PNKDOOR
IG1Q6
B-CAN
No. 22 (7.5 A)
No. 2 (IG) (50 A)
No. 1 (BAT) (100 A)
OFFUNDER-DASH FUSE/RELAY BOX
(7.5 A) No. 10
PNK
PNK RED
BLU
BRN E17
E33 R6
G601 BLK
E6
BLK
G602 K4
MICU
E3
E37
GRN LT GRN
G504BLKPNK
1
2
WHT
IG1
BAT
UNDER-HOOD FUSE/RELAY BOX
BATTERY IGNITION SWITCH
IG1 HOT in ON (II)
and START (III)
INTERIOR
LIGHT
SWITCH IMMOBILIZER-
KEYLESS CONTROL
UNIT
DRIVER’S
DOOR
SWITCH
(Closed:
Door open) FRONT
PASSENGER’S
DOOR SWITCH
(Closed:
Door open) LEFT
REAR DOOR
SWITCH
(Closed:
Door open)RIGHT
REAR DOOR
SWITCH
(Closed:
Door open) IGNITION
KEY
SWITCH
(Closed:
Key inserted)IMMOBILIZER-
KEYLESS
CONTROL
UNIT
DRIVER’S
DOOR
LOCK
KNOB
SWITCH
UN-
LOCK
IGNITION
KEY LIGHT
(LED)
H1
D2
1 111 :CANline
*1: ’06 07 models
*2: ’08 09 models
TRANSMITTER
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Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
22-205
UNDER-DASH FUSE/RELAY BOX
CONNECTOR K (8P)
PNK
WHT BLK
PNK
UNDER-DASH FUSE/RELAY BOX
CONNECTOR R (20P)
UNDER-DASH FUSE/RELAY BOX
CONNECTOR T (34P)
4. Inspect the connector and socket terminals to be sure they are all making good contact.  If the terminals are bent, loose or corroded, repair them as necessary and recheck the system.
 IftheterminalslookOK,gotostep5.
5. With the connectors still disconnected, do this input test 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 6.






K4 PNK With the ceiling light
switch in the middle
position
With moonroof:
with the interior light
switch in DOOR
position Attach to ground:
The ceiling light and front
individual map lights should
come on.
Blown No. 22 (7.5 A) fuse in
the under-hood fuse/relay
box
Blown bulb(s)
Faulty ceiling light
Faulty front individual map
light
Faulty interior light switch
(with moonroof)
An open in the wire
(cont’d)
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