Acura CSX. Manual — part 93
*13
ECM/PCM Circuit Diagram (K20Z2 engine)
11-46
Fuel and Emissions Systems
YEL/BLK
YEL/BLK
YEL/BLK
YEL/BLK
YEL/BLK
YEL/BLK
BRN/YEL
BRN/YEL
G101
3
1
2
3
1
2
YEL
BLU
RED
BRN
YEL/BLK
24P JUNCTION
CONNECTOR
A
BLU/YEL
GRN
C8
C6
C7
C5
C31
C32
INJ4
INJ2
INJ3
INJ1
CMPB
CKP
18
20
19
24
23
22
21
ECM/PCM
K
BLU/WHT
3
1
2
BLU/WHT
BLK/YEL
BRN/YEL
C41
CMPA
AF
*3
*4
5 V
No. 1 INJECTOR
No. 2 INJECTOR
No. 3 INJECTOR
No. 4 INJECTOR
CMP SENSOR A
CKP SENSOR
CMP SENSOR B
1
2
1
2
1
2
1
2
*3: ’06 model
*4: ’07-09 models
08/08/21 14:13:44 61SNR030_110_0046
*14
11-47
C13
C11
C14
YEL/RED
GRN/WHT
C23
BLU/WHT
C42
RED/BLU
1
GRN/RED
RED/BLU
C106
VTC OIL CONTROL
SOLENOID VALVE
B34
GRN/YEL
VTS
VCC1
MAP
SG1
KS
VTC
BLU/WHT
2
1
BLK
G101
1
10
YEL/RED
GRN/WHT
GRN/RED
D
2
3
1
BLK
GRN/YEL
2
C22
BLU/BLK
BRN/YEL
1
G101
VTPSW
G101
BLU/BLK
2
9
7
8
12
B
C
*2
*1
9
7
8
YEL/BLU
3
WHT/BLK
1
GRN/BLK
2
BLU/RED
4
6
F
G101
E
*1
B18
YEL/BLU
VCC2
B29
EGRP
B2
EGR
12 V
11
10
BLK/RED
(BLK)*4
BRN/YEL
*4
AG
24P
JUNCTION
CONNECTOR
24P
JUNCTION
CONNECTOR
24P
JUNCTION
CONNECTOR
KNOCK SENSOR
MAP SENSOR
ROCKER ARM
OIL PRESSURE
SWITCH
ROCKER ARM
OIL CONTROL
SOLENOID
EGR VALVE
EGR VALVE
POSITION
SENSOR
*1: A/T
*2: M/T
*4: ’07-09 models
08/08/21 14:13:45 61SNR030_110_0047
*15
+
−
11-48
Fuel and Emissions Systems
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
S
U
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
G101
D
I
J
H
18
19
20
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
*16
11-49
EVAP CANISTER
PURGE VALVE
BLK/YEL
B3
L
BLK/YEL
No. 1 IGNITION COIL
No. 3 IGNITION COIL
C15
C16
C17
G101
BLK
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
BLK
ICM
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
3
4
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
14
15
16
1
2
3
1
2
3
1
2
3
1
2
YEL/BLU
2
BLK/YEL
C106
C101
15
16
08/08/21 14:13:46 61SNR030_110_0049
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