ACURA CSX 2006 Service Repair Manual

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ECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-48Fuel and Emissions Systems
System Description (cont’d)
1
2
3
BLK/YEL
4
GRN/BLK
5
RED/YEL
B30
VG
RED/BLK
B32
VG BLK/BLU
G
B33
SG2 GRN/BLK
B31
IAT RED/YEL F
N *1
ECT SENSOR 1
B23
ECT1
RED/WHT GRN/BLK
RED/WHT
B36
PG1 BLK
B1
PG2 BLK/RED
(BLK)*4
C2
PGMETCS BLK
G101
3
A39
BKSWNC BRN Brake pedal pressed: closed
Brake pedal released: open
Brake pedal pressed: open
Brake pedal released: closed
4
YEL 1
WHT 2
LT GRN
SU T BRAKE PEDAL
POSITION SWITCH
LT BLU Clutch pedal pressed: open
Clutch pedal released: closed
CLUTCH PEDAL
POSITION SWITCH
A41
CRMTCLS
3 2
G401 BLK
*2 C40
LG1
BRN/YEL
C44
LG2 BRN/YEL
G101D
IJ
H
18
1920 BRN
BRN
BRN/YEL C101
AF
AG
BRN/
YEL BRN/
YEL
21
*4
*3*4 1 2
MAF
SENSOR
IAT
SENSOR
6 5
*1: A/T
*2: M/T
*3: ’06 model
*4: ’07-09 models
08/08/21 14:13:46 61SNR030_110_0048
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DYNOMITE -2009-

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11-49
EVAP CANISTER
PURGE VALVE
BLK/YEL
B3
LBLK/YEL
No. 1 IGNITION COILNo. 3 IGNITION COIL
C15
C16
C17
G101BLK BLK
BLK/WHT
BLK
ICM To
SPARK
PLUG
ICM
To
SPARK
PLUG
ICM
To
SPARK
PLUG
No. 2 IGNITION COIL
17
WHT/BLU
BLU/RED
No. 4 IGNITION COIL
C18
BLKICM To
SPARK
PLUG
24P JUNCTION
CONNECTOR
24P JUNCTION
CONNECTOR
BLK
M
BLK/
WHT BLK/YEL
B42
YEL/GRN BLK/WHT
BLK/WHT
BRN BLK/WHT
WHT/BLU
ALTERNATOR
1
1
3
YEL/BLU
BLK/YEL
G
WHT/BLU
9
B43 WHT/RED WHT/RED
WHT/GRN
B41 WHT/GRN 4
1
3
5
YEL
C101
7
2
34
2
8
6 7
BLK/YEL
WHT/BLU
WHT/RED
WHT/GRN
PCS
IGPLS1
IGPLS2
IGPLS3
IGPLS4 ALTL
ALTF ALTC K
WHT/BLU
BLU/RED YEL/GRN
BRN
BLU
8 13
1415 16
1
2
3
1
2
3
1
2
3
1
2 YEL/BLU
2
BLK/YEL
C106
C101 15
16
(cont’d)
08/08/21 14:13:46 61SNR030_110_0049
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ECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-50Fuel and Emissions Systems
System Description (cont’d)
ATF TEMPERATURE
SENSOR
N
WHT
WHT
SHIFT SOLENOID
VALVE A
BLU
SHIFT SOLENOID
VALVE B
ORN
GRN/BLK
6
SHIFT SOLENOID
VALVE C
GRN
7
5
2
1
A/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE A
A/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE BA/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE C
INPUT SHAFT
(MAINSHAFT)
SPEED SENSOR
GRN/BLK YEL/BLU
E 1
2
1
2
1
2
BLK/RED
(BLK)*4
G101 1
2
3 SHIFT SOLENOID
VALVE D
YEL
8
SHIFT SOLENOID
VALVE E
RED
3
*1
B27RED/YEL
B10 BLU/BLK
B11 GRN/WHT
TATF
SHA SHBB20 GRN
SHC
RED/BLK
B44
BRNBLU/YEL
B35
B25
WHT/RED
B17 LSA
LSB
LSC
NMB26
GRN/RED
SHD
B24 YEL
SHE
BLK/RED
(BLK)*4BLK/RED
(BLK)*4
*1: A/T
*4: ’07-09 models
08/08/21 14:13:47 61SNR030_110_0050
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11-51
2ND CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
1
1
BLU/RED
BLU/WHT
BLU/WHT
RED/BLK
BLU/BLK
WHT 7
YEL/GRN
RED/WHT RED
BLU/YEL 4
9
3
8
6
10
1 P
R
N
D
TRANSMISSION
RANGE SWITCH S
G101 BLU/WHT
RED/BLK
BLK/BLU
WHT 4
PNK
BLK
WHT/RED BLU
YEL/RED 6
7
2 8
3
5
1
10
5
OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR
YEL/RED
B
GRN/WHT1
2
3
C
*1
B8
B9 OP2SW
OP3SW 17
16 23 22
B13
B14 BLU/BLK
WHT
B21 B12 ATPP
ATPR
ATPD
ATPN
B15 ATPS
B28 ATPFWD
B22 ATPRVS BLU/
BLK
C101
BLK/WHT
C43
NC
4C101
O
ORN
CLUTCH
INTERLOCK
SWITCHClutch pedal pressed: closed
Clutch pedal released: open
BLK ORN 1
2
G401 BLK/RED
(BLK)*4
*2
WHT
20
*1: A/T
*2: M/T
*4: ’07-09 models
(cont’d)
08/08/21 14:13:48 61SNR030_110_0051
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DYNOMITE -2009-

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ECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-52 Fuel and Emissions Systems
System Description (cont’d)
A/F SENSOR
(SENSOR 1)
2
RED
C29
AFS RED
C30
AFS RED/YEL
C9
AFSHTC 1
RED/BLU
3
BLU
4
Q
10
C101
SECONDARY
HO2S
(SENSOR 2)
3
4
C27
SHO2S
B4
SO2SHTC H
P
I
OIL PRESSURE
SWITCH
B7
OPSW
YEL/RED
A25 1
3
BRN
VCC4
A17 1
YEL
APSA
A35 2
BLU
SG4
A24 6
GRY
VCC5
A18 4
PUR
APSB
A34 5
LT BLU
SG5 9
5 THROTTLE
ACTUATOR
1 6
WHT/RED 2
13
4
6
5
BLU
RED/BLK RED/BLK
GRN RED/BLU
BLU/RED GRN/YEL
C4
ETCSM
C3
ETCSM C39
SG3 C21
TPSB
C12
VCC3
C20
TPSA
GRN BLU
GRNPUR
R
WHT/GRN
3 (2) *81 (5) *8
2 (6) *8 BLK
YEL
C209
AB
1 2
THROTTLE BODY
APP SENSOR A/B
BLK/WHT
WHT
PNK TP SENSOR
AB
BRN
PNK WHT
BLU/RED
GRN/YEL
14
15
19
23
18
*8: ’09 model
08/08/21 14:13:49 61SNR030_110_0052
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11-53
1
A33
ECT2
2
A9
SG6 GRN
BLK
A/C PRESSURE
SENSOR
1
A19
VCC6
2
A16
ACPD LT GRN
3
BLK
1
2
A26
FTP
3
BLK
1
A10
VSV LT GRN
LT GRNEVAP CANISTER
VENT SHUT VALVE
2
PUR
A28
NEP BLU
To
EPS CONTROL UNIT
12
9
10
11
8
RED
BLK
PUR C204
Q
BLULT GRN
A27
SLS PNK
13
B16
SUPP
B40 SDNP BRN C201
VYEL
PNK
2
1
2
1
2 1
BLU/YEL AH
RED
*1 LT GRN
17
BLU
GRN BLU
BLK
G504 16
16
1717
7
6 GRN/ORN
BLK/WHT
LT GRN
GRN
C202
CABLE REEL
C103
2
1 2
1 ECT SENSOR 2
FTP SENSOR
SHIFTLOCK
SOLENOID
PADDLE
SHIFTER
(UPSHIFT
SWITCH)
PADDLE
SHIFTER
(DOWNSHIFT
SWITCH)
RED BLK
*1: A/T
(cont’d)
08/08/21 14:13:49 61SNR030_110_0053
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Î
ECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-54Fuel and Emissions Systems
System Description (cont’d)
RED
A42
WEN
WHT
A36
CANH
RED
A37
CANL
BLU
A29
VSSOUT 10
11 7
14 5
10
WHT
9
RED
5
WHT
10
BLK
4
RED
7
WHT
6
RED
8
ORN
9
LT BLU
2
2
BLU
7
ORN
4
LT BLU
8
WHT
BLU
YXW
6P
JUNCTION
CONNECTOR
7
13 14 12
11
C201
BRN
BRN
To MOONROOF
CONTROL
UNIT/MOTOR To AUDIO UNIT
DATA
LINK
CONNECTOR
5
7
9
14
6
12
16 4
BLK
G502
GAUGE CONTROL
MODULE (TACH)
19
1
JUNCTION BOX
J
RED
WHT
2
1
6P
JUNCTION
CONNECTOR
3265
3265
14
14
1 15
11
12
1
17
EPS CONTROL
UNIT
SRS UNIT
ABS MODULATOR-
CONTROL UNIT RED
BLK
WHT RED
BLU
CANL
CANH
CANL CANH
CANL CANH
CANL
*5
CANH
*5: ’06-07 models
08/08/21 14:13:50 61SNR030_110_0054
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11-55
RED
A42
WEN
WHT
A36
CANH
RED
A37
CANL
BLU
A29
VSSOUT 10
RED
11
BLK
7
WHT
14
RED
5
BLU
5
WHT
10
BLK
4
RED
7
WHT
6
RED
8
ORN
9
LT BLU
2
2
BLU
7
ORN
4
LT BLU
8
WHT
BLU
Y
X
W
6P
JUNCTION
CONNECTOR C201
BRN
5
7
9
14
6
12
16 4
GAUGE CONTROL
MODULE (TACH)
19
1
JUNCTION BOX
J
SRS UNIT REDWHT 14 15
6P
JUNCTION
CONNECTOR
3265
1 15
EPS CONTROL UNIT
VSA MODULATOR-
CONTROL UNIT
YAW RATE-LATERAL
ACCELERATION SENSOR 12P
JUNCTION
CONNECTOR
1
43265
14
5 6 10 11
4
12
814 15 20
3
4 RED WHT
7
13
14 12 11
1
2
11
12
1
15
CANL
CANH
CANL
CANH
CANL CANH
CANL CANH WHT RED
To MOONROOF
CONTROL
UNIT/MOTOR
WHTRED 9
10
11 2
CANL
CANH
TPMS
CONTROL
UNIT
*6 BLK
DATA
LINK
CONNECTOR
G502 CANL
To AUDIO UNIT
CANH
C501
*6: ’08 model
(cont’d)
08/08/21 14:13:51 61SNR030_110_0055
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DYNOMITE -2009-

ÎECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-56Fuel and Emissions Systems
System Description (cont’d)
GAUGE CONTROL
MODULE (TACH)
RED
A42
WEN
WHT
A36
CANH
RED
A37
CANL
BLU
A29
VSSOUT 10
RED
11
BLK
7
WHT
14
RED
5
BLU
8
WHT
10
BLK
5
RED
7
WHT
6
RED
3
ORN
9
LT BLU
7
ORN
4
LT BLU
8
WHT
C201
BRN
DATA
LINK
CONNECTOR
5
7
9
14
6 12
16
4
BLK JUNCTION BOX
J
SRS UNIT RED
WHT 9
10
15
1
1
15
EPS CONTROL UNIT
VSA MODULATOR-
CONTROL UNIT
RED WHT
7
13
14
12 11
1
2
*8 2
2
BLU BLU
To MOONROOF
CONTROL UNIT/MOTOR To AUDIO UNIT 12P
JUNCTION
CONNECTOR
12 8 5 10
911
C501 RED
WHT
10
9
76
YX
W
YAW RATE-LATERAL
ACCELERATION SENSOR 3
4
TPMS CONTROL
UNIT 15
14
4
3
(1)*9
(2)*9
CANL
CANH
CANL CANH
11
12 CANH CANL
2
11 CANH CANL
CANH CANL
WHT RED19
1
G502
CANL
CANH
*8: ’09 model
*9: With Premium Audio
08/08/21 14:13:52 61SNR030_110_0056
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11-57
ETCS
CONTROL
RELAY
A/C COMPRESSOR
CLUTCH RELAY
ELD BATTERY
UNDER-HOOD FUSE/RELAY BOX
WHT
BRN D1
ORN D4
WHT D8
YEL A1
ORN A3
BLK A2
G301 GRY
PUR E6
BLU E7
ORN
E5
E1
LT BLU
C1
IG1ETCS 21
WHT P
M
A23
ELD U RED
F20
PNK
F16 F14
GRN
F9 F7
ORN
F6
YEL
F5
A14
ACC A21
SUBRLY A5
FANH A6
MRLY A4
FANL A8
IGP A20
ETCSRLY
ORN L
AD
AC AE
ABAA
Z PGM-FI
SUBRELAY
PGM-FI
MAIN
RELAY 1
IGNITION
COIL
RELAYA/C
CONDENSER
FAN RELAY
COOLING
FAN
CONTROL
RELAY
RADIATOR
FAN RELAY
9
10
ORN
ORN YEL/BLK
A
AH
F19
H1
C101 PUR
C101
PUR
G1
15
3
(cont’d)
08/08/21 14:13:52 61SNR030_110_0057
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