2006 ACURA CSX relay

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TYPE S and ’08 PREMIUM and ’09 models
22-154Exterior Lights
Circuit Diagram - Fog Lights
E33
BLK
BLK PG
F20
E6
T34
SG
BLK BLK BBACKUP
ORN
No. 23 (10 A)
WHT
No. 6 (20 A)
WHT
1 2
BLK
BLK 2
1
RED
RED PNK
1
3 2
4 WHT
WHT
R7
ORN
BLK
PUR
COMBINATION LIGHT SWITCH 12
8
OFF
BATTERY
No. 1 (BAT) (100 A)
UNDER-HOOD FUSE/RELAY BOX
MICU
UNDER-DASH FUSE/RELAY BOX
S5
S14
FOG LIGHT SWITCH
LEFT
FOG LIGHT
(55 W)RIGHT
FOG LIGHT
(55 W)
UNDER-DASH
FUSE/RELAY BOX
FOG LIGHT
RELAY
G1
D4
G19
M9
G2
G601
G401
G602
G501 G201
G301
ON
No. 2 (OP)
(80 A)*1 (60 A)*2
*1: ’07 model
*2: ’08 09 models
08/08/21 14:26:55 61SNR030_220_0156
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DYNOMITE -2009-


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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)
08/08/21 14:26:55 61SNR030_220_0157
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DYNOMITE -2009-

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22-156Exterior Lights
Circuit Diagram - Back-up Lights
F6 D2
D2
BRN
BRN BRN
1 4 BRN
E15
F9
MICU
BLU
BLU
(A/T)
BLK (M/T)
WHT PUR
WHT
G101 G701BLK
BLK
GRN/WHT
1 2
YEL
BLU
IG1
BAT
IGNITION SWITCH
WHT
UNDER-HOOD FUSE/RELAY BOX
No. 2 (IG) (50 A)
No. 1 (BAT) (100 A)
BATTERY
IG1 HOT in ON (II)
and START (III)
UNDER-DASH
FUSE/RELAY
BOX
BACK-UP
LIGHT SWITCH
(On the transmission
housing)
(Closed: In position R)
PCM
TRANSMISSION
RANGE
SWITCH
(Back-up
light switch)
(Closed: In position R ) LEFT
BACK-UP
LIGHT
(16 W)
RIGHT
BACK-UP
LIGHT
(16 W)
UNDER-DASH
FUSE/RELAY BOX
NAVIGATION
UNIT
H1
F7BRN
BRN1
2
1
2No. 10
(7.5 A) No. 10
(7.5 A)*1: ’06 model
*2: ’07 09 models
BLK/RED*1 BLK*2
08/08/21 14:26:56 61SNR030_220_0158
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DTC B1078:
YES
NO
YES
NO YES
NO
22-157
DTC Troubleshooting
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)
GND (BLK)
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P) GND (BLK)
GND (BLK)
Daytime Running Lights System
Error
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. Turn the ignition switch to ON (II).
2. Pull the parking brake lever.
3. Clear the DTCs with the HDS.
4. Release the parking brake lever.
5. Turn the ignition switch to LOCK (0), and then back to ON (II).
6. Check for DTCs with the HDS.
Go to step 7.
Intermittent failure. The daytime running
lights system is OK at this time. Check for loose or
poor connections.
7. Turn the headlight switch ON (high beam).
Go to step 8.
Go to step 10.
8. Turn the ignition switch to LOCK (0). 9. Measure the voltage between under-dash fuse/
relay box connector E (42P) terminals No. 6 and
No. 33 and body ground, and between under-dash
fuse/relay box connector F (34P) terminal No. 20
and body ground individually.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Repair an open in the BLK wire or poor
ground (G 401, G501, G601, G602).
10. Turn the ignition switch to LOCK (0) and turn the headlight switch OFF.
(cont’d)
Wire side of female terminalsWire side of female terminals
Is DTC B1078 indicated?
Do bot h head l i ght s ( hi gh beam) come on? I s t her e l ess t han 0.5 V ?
08/08/21 14:26:56 61SNR030_220_0159
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DYNOMITE -2009-



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YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
22-158Exterior Lights
DTC Troubleshooting (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
BRH/L(HI)(WHT)
RIGHT HEADLIGHT (HIGH BEAM) 2P CONNECTOR B R H/L (HI) (WHT) UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)
LEFT HEADLIGHT (HIGH BEAM) 2P CONNECTOR B L H/L (HI) (PNK)
B L H/L (HI) (PNK)
HEADLIGHT (HIGH BEAM) 2P CONNECTOR GND (BLK)
11. Check the No. 12, No. 13, and No. 18 fuses in theunder-dash fuse/relay box.
Go to step 12.
Replace the blown fuse and recheck. If the
No. 18 (20 A) fuse is blown again, replace the
under-dash fuse/relay box. If the No. 12 (10 A) or
No. 13 (10 A) fuse is blown again, repair a short in
the wire between the under-dash fuse/relay box
and appropriate headlight (high beam).
12. Check the headlight bulbs.
Go to step 13.
Replace the faulty bulb.
13. Disconnect under-dash fuse/relay box connectors F (34P) and G (21P).
14. Disconnect the both headlight (high beam) 2P connectors.
15. Check for continuity between right headlight (high beam) 2P connector terminal No. 2 and under-dash
fuse/relay box connector F (34P) terminal No. 22.
Go to step 16.
Repair an open in the wire between the right
headlight (high beam) and the under-dash fuse/
relay box. 16. Check for continuity between left headlight (high
beam) 2P connector terminal No. 2 and under-dash
fuse/relay box connector G (21P) terminal No. 15.
Go to step 17.
Repair an open in the wire between the left
headlight (high beam) and the under-dash fuse/
relay box.
17. Check for continuity between headlight (high beam) 2P connector terminal No. 1 and body
ground.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Repair an open in the BLK wire or poor
ground (G 201-right side, G301-left side).
Wire side of female terminals
Wire side of female terminals Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Ar e al l f uses OK ? Ar e t he head l i ght bul bs OK ?
Is there continuity? Is there continuity?
Is there continuity?
08/08/21 14:26:57 61SNR030_220_0160
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DYNOMITE -2009-

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DTC B1275:
DTC B1276:
DTC B1278:
YES
NO
When the combination light switch is turned OFF
When the combination light switch is turned to
PARKING (SMALL) When the combination light switch is turned ON
(HEADLIGHT)
YES
NO
When the combination light switch is turned OFF
YES
NO
22-159
Combination Light Switch OFF
Position Circuit Malfunction
Combination Light Switch
Parking (SMALL) Position Circuit Malfunction
Combination Light Switch ON
Position Circuit Malfunction
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. Turn the combination light switch to the PARKING (SMALL), and ON (low beam) positions for 6
seconds in each position, and then to the OFF
position.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose or poor connections.
5. Select LIGHTING from the BODY ELECTRICAL system select menu, and enter DATA LIST.
6. Check each combination light switch position value with the DATA LIST menu.
Data List Value
Headlight Switch (OFF) ON
Headlight Switch (PARKING) OFF
Headlight Switch (HEADLIGHT) OFF
Data List Value
Headlight Switch (OFF) OFF
Headlight Switch (PARKING) ON
Headlight Switch (HEADLIGHT) OFF Data List Value
Headlight Switch (OFF) OFF
Headlight Switch (PARKING) ON
Headlight Switch (HEADLIGHT) ON
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the combination light switch 12P connector.
9. Turn the ignition switch to ON (II).
10. Select LIGHTING from the BODY ELECTRICAL system select menu, and enter DATA LIST.
11. Check each combination light switch position value with the DATA LIST menu.
Data List Value
Headlight Switch (OFF) OFF
Headlight Switch (PARKING) OFF
Headlight Switch (HEADLIGHT) OFF
Go to step 15.
Go to step 12.
(cont’d)
I s DT C B12 7 5 , B12 7 6, or B12 7 8 i nd i cat ed ? Are all data list values correct?
Are all data list values indicated OFF?
08/08/21 14:26:57 61SNR030_220_0161
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
YES
NO
YES
NO
22-160Exterior Lights
DTC Troubleshooting (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR S (20P)
H/L OFF
SW (ORN)
SMALL LT SW
(GRY)
H/L ON
SW
(PNK) COMBINATION LIGHT SWITCH 12P CONNECTOR
H/L OFF
SW (ORN) COMBI GND (BLK)
SMALL
LT SW
(GRY)
H/L ON
SW (PNK)
UNDER-DASH FUSE/RELAY BOX CONNECTOR S (20P) COMBI GND (BLK)
H/L OFF
SW (ORN)
SMALL LT SW (GRY)
H/L ON SW (PNK)
12. Turn the ignition switch to LOCK (0).
13. Disconnect under-dash fuse/relay box connector S
(20P).
14. Check for continuity between body ground and under-dash fuse/relay box connector S (20P)
terminals No. 1, No. 11, and No. 13 individually.
Repair a short to ground in the wire.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
15. Turn the ignition switch to LOCK (0).
16. Do the combination light switch test (see page 22-166).
Go to step 17.
Replace the combination light switch.
17. Disconnect under-dash fuse/relay box connector S (20P). 18. Check for continuity between under-dash fuse/relay
box connector S (20P) terminals and the
combination light switch 12P connector terminals
as shown:
Under-dash fuse/
relay box connector S (20P) Combination light
switch 12P connector
19
11 10
13 11 512
Go to step 19.
Repair an open in the wire.
19. Check for continuity between under-dash fuse/relay box connector S (20P) terminals as shown:
From terminal To terminal 1 11, 12, 13, 16
13 11, 12, 16
Repair a short between the wires.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Wire side of female terminals Wire side of female terminals
Wire side of female terminals
Is there continuity? I s t he combi nat i on l i ght sw i t ch OK ? Is there continuity?
Is there continuity?
08/08/21 14:26:57 61SNR030_220_0162
ProCarManuals.com
DYNOMITE -2009-

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DTC B1279:
YES
NO
When the passing switch is operated
When the headlight switch is turned ON, and the
dimmer switch changed from low beam to high
beam
YES
NO When the combination light switch is turned OFF
YES
NO
YES
NO
22-161
UNDER-DASH FUSE/RELAY BOX CONNECTOR S (20P)
DIMMER SW
(LT BLU)
H/L ON
SW (PNK)
PASSING
SW (RED)
Headlight Switch DIMMER
Position Circuit Malfunction
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. Turn the combination light (headlight) switch ON.
4. Change the dimmer switch from low beam to high beam.
5. Turn the combination light switch OFF, and then to the passing position, and wait for at least 6 seconds.
6. Check for DTCs with the HDS.
Go to step 7.
Intermittent failure, the system is OK at this
time. Check for loose or poor connections.
7. Select LIGHTING from the BODY ELECTRICAL system select menu, then enter DATA LIST.
8. Check each combination light switch position value with the DATA LIST menu.
Data List Value
Headlight Switch (PASSING) ON
Headlight Switch (High beam) OFF
Data List Value
Headlight Switch (PASSING) OFF
Headlight Switch (High beam) ON
Headlight Switch (HEADLIGHT) ON
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Go to step 9. 9. Turn the ignition switch to LOCK (0).
10. Disconnect the combination light switch 12P connector.
11. Turn the ignition switch to ON (II).
12. Select LIGHTING from the BODY ELECTRICAL system select menu, then enter DATA LIST.
13. Check each combination light switch position value with the DATA LIST menu.
Data List Value
Headlight Switch (PASSING) OFF
Headlight Switch (High beam) OFF
Headlight Switch (HEADLIGHT) OFF
Go to step 17.
Go to step 14.
14. Turn the ignition switch to LOCK (0).
15. Disconnect under-dash fuse/relay box connector S (20P).
16. Check for continuity between body ground and under-dash fuse/relay box connector S (20P)
terminals No. 11, No. 12, and No. 16 individually.
Repair a short to ground in the wire.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
(cont’d)
Wire side of female terminals
Is DTC B1279 indicated?
Are all data list values correct? Are all data list values indicated OFF?
Is there continuity?
08/08/22 16:38:06 61SNR030_220_0163
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DYNOMITE -2009-