2006 ACURA CSX sensor

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Exhaust Gas Recirculation (EGR) System Diagram (K20Z2 engine)
11-44Fuel and Emissions Systems
System Description (cont’d)
INTAKE MANIFOLD
EGR VALVE
EGR VALVE
POSITION SENSOR
YEL/BLU
GRN/BLK
WHT/BLK
BLU/RED
BLK/RED
(BLK)
BLK
ECM/PCM
VARIOUS
SENSORS
* : ’07-09 models
*
The EGR system reduces oxides of nitrogen (NOx) emissions by recirculating exhaust gas through the EGR valve and
the intake manifold into the combustion chambers. The ECM/PCM memory includes the ideal EGR valve position for
varying operating conditions.
The EGR valve position sensor detects the amount of EGR valve lift and sends it to the ECM/PCM. The ECM/PCM then
compares it with the ideal lift in its memory (based on signals sent from other sensors). If there is any difference
between the two, the ECM/PCM cuts current to the EGR valve.
08/08/21 14:13:43 61SNR030_110_0044
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Evaporative Emission (EVAP) Control Diagram
11-45
ATMOSPHERE
ATMOSPHERE
FUEL FILL
CAP FUEL TANK VAPOR
RECIRCULATION
TUBE
FUEL TANK VAPOR
CONTROL VALVE
VARIOUS
SENSORS
FUEL TANK FTP SENSOR
EVAP CANISTER
VENT SHUT VALVE
PUR
LT GRN
ECM/PCM BLK
YEL
YEL/BLU
BLK/YEL RED
BLU BLK
LT GRN
From
No. 3
ALTERNATOR
(10 A) FUSE
From
PGM-FI
SUBRELAY
EVAP
CANISTER
EVAP CANISTER
PURGE VALVE ATMOSPHERE
The EVAP controls minimize the amount of fuel vapor escaping into the atmosphere. Vapor from the fuel tank is
temporarily stored in the EVAP canister until it can be purged from the canister into the engine and burned.
The EVAP canister is purged by drawing fresh air through it and into a port on the intake manifold.
The purging vacuum is controlled by the EVAP canister purge valve, which operates whenever engine coolant
temperature is above 60 °C (140 °F).
(cont’d)
* : This illustration shows K20Z2 engine
08/08/21 14:13:44 61SNR030_110_0045
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DYNOMITE -2009-

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ECM/PCM Circuit Diagram (K20Z2 engine)
11-46Fuel and Emissions Systems
System Description (cont’d)
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/BLK24P JUNCTION
CONNECTOR
A
BLU/YEL
GRN
C8
C6
C7C5
C31
C32 INJ4
INJ2
INJ3INJ1
CMPB
CKP 18 20
19
2423
22 21
ECM/PCM
KBLU/WHT
3
1
2
BLU/WHT BLK/YEL
BRN/YEL
C41
CMPA
AF*3
*4
5V
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
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11-47
C13C11
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/YEL1
G101
VTPSW
G101BLU/BLK
2
978
12
B C*2
*1
978 YEL/BLU3
WHT/BLK 1
GRN/BLK 2
BLU/RED 4
6
F
G101
E *1
B18 YEL/BLU
VCC2
B29
EGRP
B2
EGR
12 V
1110 BLK/RED
(BLK)*4
BRN/YEL *4
AG
24P
JUNCTION
CONNECTOR
24P
JUNCTION
CONNECTOR
24P
JUNCTION
CONNECTOR
KNOCK SENSORMAP 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
(cont’d)
08/08/21 14:13:45 61SNR030_110_0047
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DYNOMITE -2009-

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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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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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DYNOMITE -2009-

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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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