micu ACURA CSX 2006 Service Repair Manual
[x] Cancel search | Manufacturer: ACURA, Model Year: 2006, Model line: CSX, Model: ACURA CSX 2006Pages: 2893, PDF Size: 67.66 MB
Page 341 of 2893
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ECM/PCM Electrical Connections (cont’d)
11-18 Fuel and Emissions Systems
System Description (cont’d)
D
C
EVAP CANISTER
PURGE VALVE
EVAP CANISTER
VENT SHUT VALVE
ALTERNATOR
ICM
To
SPARK
PLUG
No. 1 IGNITION COIL
To
SPARK
PLUG ICM
No. 2 IGNITION COIL
To
SPARK
PLUG ICM
No. 3 IGNITION COIL
To
SPARK
PLUG ICM
No. 4 IGNITION COIL A10 VSV B3 PCS
B42 ALTL
B43 ALTF
C15 IGPLS1
C16 IGPLS2
C17 IGPLS3
C18 IGPLS4 B41 ALTC LG1 C40 I
VTS B34 ROCKER ARM
OIL CONTROL
SOLENOID
VTC C23
AFSHTC C9
AFS C29
SHO2S C27
SO2SHTC B4
LG2 C44
AFS C30
SECONDARY
HO2S
(SENSOR 2) A/F SENSOR
(SENSOR 1)
S-NET5V A44 G
CMPA C41 K
Q
CMP SENSOR A
ROCKER ARM
OIL PRESSURE
SWITCH
P
VTPSW C22 VTC OIL CONTROL
SOLENOID VALVE
To MICU
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Page 342 of 2893
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11-19
A42 WEN
A31 SCS OIL PRESSURE
SWITCH
B
BRAKE PEDAL
POSITION SWITCH
BKSW A40
BKSWNC A39 H
VSSOUT A29 To
MOONROOF
CONTROL UNIT/MOTOR,
AUDIO UNIT
A37 CANL
FTP SENSOR
A19 VCC6
A26 FTP
A9 SG6
A36 CANH
E OPSW B7
Q
R
P
CRMTCLS A41 CLUTCH PEDAL
POSITION SWITCH
S
THROTTLE
ACTUATOR
THROTTLE BODY C12 VCC3
C20 TPSA
C21 TPSB
C39 SG3
C4 ETCSM
C3 ETCSM ECT SENSOR 2
R
S
A/C PRESSURE
SENSOR *2
VCC4 A25 APSA A17 SG4 A35
VCC5 A24
APSB A18 SG5 A34
ETC2 A33
ACPD A16
To MICU *3
T
RVS A27
GAUGE CONTROL MODULE (TACH)
B A
REVERSE LOCKOUT
SOLENOID
TP SENSOR A/B A
DATA LINK
CONNECTOR
B APP SENSOR A/B
*2: M/T
*3: K20Z3 engine
(cont’d)
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Page 381 of 2893
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ECM/PCM Circuit Diagram (K20Z2 engine) (cont’d)
11-58Fuel and Emissions Systems
System Description (cont’d)
Z
C36 IG1
A44 S-NET5V
A15
IMOFPR
A31
SCS
A40
BKSW BLK/GRN
C101 2
MICU
V
PGM-FI MAIN
RELAY 2
(FUEL PUMP)
UNDER-DASH FUSE/RELAY BOX
F5
YEL
F8
PNK
F10
BRN
F11
BRN
F24
BRN
F25
LT GRN
F30
LT GRN
F31
WHT
F29
G2
ORN
G4
ORN
BRN
G16
WHT
G20
WHT
Q1
WHT
Q5
ORN
Q8
LT BLU
E9
GRN
E27
YEL
IG2
B IG1
D1
WHT
D2
BLU
C3
ORN
C1
YEL
3
AD
ST
AC
AB
O
ORN
AE
AA
YW
X
ST6
4
1
R
IGNITION SWITCH FUEL PUMPP
2
4
BLK E28
G601
IG1 HOT in ON (II)
and START (III) YEL
G12 STARTER
CUT RELAY
(ST CUT)
22
UNDER-HOOD FUSE/RELAY BOX: No. 21 DBW (THROTTLE
ACTUATOR CONTROL) (15 A) No. 18 IG COIL (15 A)
No.19FIMAIN(15A)
No.11FISUB(15A)
No.15OILLVL(7.5A)
No. 2 IG MAIN (50 A)
No. 23 BACK UP (10 A)
No.12STOP&HORN(15A)
No. 1 MAIN FUSE (100 A)
UNDER-DASH FUSE/RELAY BOX: No. 3 ALTERNATOR (10 A)
No. 2 FUEL PUMP (15 A)
No. 36 IG2 HAC (A/C) (10 A)
No. 10 METER (7.5 A)
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Page 391 of 2893
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ECM Circuit Diagram (K20Z3 engine) (cont’d)
11-68Fuel and Emissions Systems
System Description (cont’d)
PGM-FI MAIN
RELAY 2
(FUEL PUMP)
UNDER-DASH FUSE/RELAY BOX
STARTER
CUT RELAY
(ST CUT)
F5
YEL
F8
PNK
F10
BRN
F11
BRN
F24
F25
LT GRN
F30
LT GRN
F31
WHT
F29
G2
ORN
G4
ORN
G12
BRN
G16
WHT
G20
WHT
Q1
WHT
Q5
ORN
Q8
LT BLU
E9
GRN
E27
YEL
IG2
B IG1
D1
WHT
D2
BLU
C3
ORN
C1
YEL
3 UOPY
V
X
C36 IG1
A44 S-NET5V
A15 IMOFPR
A31
SCS
A40
BKSW
G401 BLK/GRN
C101 2
BLK
TRS
ST6
4
1
M
IGNITION SWITCH MICU
FUEL PUMP P
2
4
BLK
1
2
CLUTCH
INTERLOCK
SWITCH ZW
Clutch pedal pressed: closed
Clutch pedal released: open
IG1 HOT in ON (II)
and START (III)
ORN
G601BRN
22
UNDER-HOOD FUSE/RELAY BOX:
No. 21 DBW (THROTTLE
ACTUATOR CONTROL) (15 A) No. 18 IG COIL (15 A)
No.19FIMAIN(15A)
No.11FISUB(15A)
No.15OILLVL(7.5A)
No. 2 IG MAIN (50 A)
No. 23 BACK UP (10 A)
No.12STOP&HORN(15A)
No. 1 MAIN FUSE (100 A)
UNDER-DASH FUSE/RELAY BOX: No. 3 ALTERNATOR (10 A)
No. 2 FUEL PUMP (15 A)
No. 36 IG2 HAC (A/C) (10 A)
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Page 994 of 2893
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Circuit Diagram - PCM A/T Control System
14-78Automatic Transmission
System Description (cont’d)
LT GRN
BRN
SDNP B40
GRN
BLU/YEL BLU
CABLE REEL
2
1 1 2
B16
SUPP
LG2 LG1 PG2
PG1
C40 B1
C44 B36
BLK
BRN/YEL
BRN/YEL
G101 PG SG
16
15
BLK
C(44P)
B(44P)
A(44P)
Terminal side of female terminals
19 1
WHT
RED RED
WHT
17
CANL
A37 A36 CANH
PNK 1
3827
65410 17
6
54938 10
BLK
B13 BLK/GRN BRN
C36
IG1
12 V
GAUGE CONTROL MODULE (TACH) No. 2 (15 A)
UNDER-DASH FUSE/RELAY BOX
No.10(7.5A)
BLU/WHT
RED/BLK
WHT ORN
A40
LT GRN
WHT SLS
A27
RED
BLK BAT
IG1
IGNITION SWITCH
No. 12 (15 A)
BKSW BLK
BLU/WHT
FWD RVS
S ST
P R
N
TRANSMISSION RANGE SWITCH D
B22
ATPRVS
ATPFWD
ATPP
ATPR ATPN ATPD ATPS
YEL/RED
B28
G101
B12
B21
BLU
PNK
RED/BLK
WHT
BLK/BLU
B14 B15
WHT/RED
BLU/BLK YEL/GRN
RED
BLU/YEL
1
2 YEL BLK
G503
PNK D N
R
P
UNDER-HOOD FUSE/RELAY BOX
No. 2 (IG) (50 A)
No. 1 (100 A)
BATTERY
A/T
GEAR
POSITION
INDICATOR
DRIVER
CIRCUIT
CPU STARTER
CUT RELAY
SHIFT LOCK
SOLENOID BRAKE PEDAL
POSITION SWITCH MULTIPLEX INTEGRATED
CONTROL UNIT (MICU)
F-CAN
TRANSCEIVER
DASH-LIGHT BRIGHTNESS
CONTROL CIRCUIT
RIGHT
GRN/ORN
LT GRN
BLK/WHT
LEFT
LT GRN
SHIFT
INDICATOR
RED/WHT
G504 G504
POWERTRAIN CONTROL
MODULE (PCM)
BLK/RED* BLK* *1: ’06 model
*2: ’07 09 models
5V
BLK16
17
6 16
17
7
PADDLE SHIFTER
(DOWNSHIFT SWITCH)PADDLE SHIFTER
(UPSHIFT SW ITCH)
PCM Connector Terminal Locations
S
BRN
WHT
YEL
GND
364144
43
42
27 28
30 33 34 35
32 25
20 21 22 16 18
17
13 14 15
12
11 789
43
1
3123
31
456
15
14
21
20 2524
3433
29
28
27
42 44
40
37
36 31
1
23456 9 87
11 12 1514 13 17 18
16
32
29
30
42 43 44
4039
36
181716 19
3598
10 21
20
27
2
26 29 22
40
23
24
4123
10
26 39
12
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14-264
A/T Gear Position Indicator
Circuit Diagram
22
36 444342 27 28 30 33 34 35
3225
20 21 22 16 1817
13 14 15
1211 789
3
1
3123
31
456
1514
21
20 25
24
34
33
292827
42 44
40
37
36 31
1
23456 9 87
11 12 151413 17 1816
32
29 30
42 43 44
40
39
36
18
17
16 19
3598
10 21
20
27
2
26 29 40
4
23 24
41 23
41
10
26
39
5 6
2
1
1 2
CABLE REEL
BLU
BLU
BLU/YEL
GRN
GRN
SUPP B16
B40
SDNP
BRN
PG1
PG2
LG1
LG2
C40 B1
C44 B36
BLK
BRN/YEL
BRN/YEL
G101 No. 14 (7. 5 A)
RED GRY
2
1
RED/BLK RED
PG SG16
15
BLK BRN
C(44P)
B (44P)
A(44P)
Terminal side of female terminals
19 1
WHT
RED RED
WHT
17
CANL
A37 A36 CANH
1
3827
64 1017
54938 10
BLK
B13 BLK/GRN
BRN
C36
IG1
12 V
GAUGE CONTROL MODULE (TACH) No. 2 (15 A)
UNDER-DASH FUSE/RELAY BOX
No. 10 (7. 5 A)
BLU/WHT
RED/BLK
WHT ORN
BAT
IG1
IGNITION SWITCH
BLK
BLU/WHT
FWD RVS
S ST
P R
N
TRANSMISSION RANGE SWITCH D
B22
ATPRVS
ATPFWD
ATPP
ATPR ATPN ATPD ATPS
YEL/RED
B28
G101
B12
B21
BLU
PNK
RED/BLK
WHT
BLK/BLU
B14 B15
WHT/RED
BLU/BLK YEL/GRN
RED
BLU/YEL
BLK
G503
D N
R
P
UNDER-HOOD FUSE/RELAY BOX
No. 2 (IG) (50 A)
No. 1 (100 A)
BATTERY
A/T
GEAR
POSITION
INDICATOR
DRIVER
CIRCUIT
CPU STARTER
CUT RELAY
POWERTRAIN CONTROL
MODULE (PCM)
F-CAN
TRANSCEIVER
DASH-LIGHT
BRIGHTNESS
CONTROL
CIRCUIT
A/T GEAR
POSITION
INDICATOR
PANEL LIGHT
MULTIPLEX INTEGRATED
CONTROL UNIT (MICU)
MULTIPLEX INTEGRATED
CONTROL UNIT (MICU)
SHIFT
INDICATOR
LT GRNLEFT
BLK/WHT LT GRN GRN/ORN
RIGHT
PADDLE SHIFTER
(UPSHIFT SWITCH)
RED/WHT
G504 G504
5V
BLK*
BLK/RED*
BLK16
17
6 16
17
7
PADDLE SHIFTER
(DOWNSHIFT SWITCH)*1: ’06 model
*2: ’07 09 models
PCM Connector Terminal Locations
S
GND
21
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Page 1196 of 2893
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14-279
Circuit Diagram
22
36 444342 27 28
3033 34 35
32 25
20 21 22 16 1817
13 14 15
12
11 789
31
3123
31
456
1514
2120 25
24
34
33
292827
42 44
40
37
36 31
123456 9
87
11 12 151413 17 1816
32
29
30
42 43 44
40
39
36
18
17
16 19
3598
10 2120
27
2
26 29 40
4
23 24
41 23
41
39
10
26
G601
4 3
DN
R
P ST
S RVS
FWD
BKSW LT GRN
LT GRNWHT
No. 12 (15 A)
YEL
BRN
PG SG 16
15
BLK A40
BKSW
WHT/BLK BLK LT BLU
BLK
C(44P)
B(44P)
A(44P)
Terminal side of female terminals
G503
BLK A36
A37
WHT
RED
RED
WHT
1
19 CANH
CANL
17
P
R
N
D
S
GAUGE CONTROL MODULE (TACH)
2 1 3 4 1
3827
65 41017
6
549 38 10
KEYSW KEYSOL
G504
BLU
PNK
PUR
BLK P-PIN
ATPPBLU/BLK 5 4 6 2 1
3
GRY PUR
LT BLU
A24
VCC5
APSB A18
A34
SG5
SG4
A35
A17
APSA VCC4 A25
BLUYEL
BRN
PG1
PG2
LG1
LG2
C40 B1
C44 B36
BRN/YEL
BRN/YEL
G101 PNK
BLK
B13 BLK/GRN
BRN
C36
IG1
12 V
No. 2 (15 A)
UNDER-DASH FUSE/RELAY BOX
No. 10 (7. 5 A)
BLU/WHT
RED/BLK
WHT ORN
SLS
A27
RED
BLK BAT
IG1
IGNITION SWITCH
5V
BLK
BLU/WHT
TRANSMISSION RANGE SWITCH
B22
ATPRVS
ATPFWD
ATPP
ATPR ATPN ATPD
ATPS
YEL/RED
B28
G101
B12
B21
BLU
PNK
RED/BLK
WHT
BLK/BLU
B14 B15
WHT/RED
BLU/BLK YEL/GRN
RED
BLU/YEL
1
2 YEL
PNK
UNDER-HOOD FUSE/RELAY BOX
No. 2 (IG) (50 A)
No. 1 (100 A)
BATTERY
STARTER
CUT
RELAY
SHIFT
LOCK
SOLENOID BRAKE
PEDAL
POSITION
SWITCH
ACCELERATOR
PEDAL
POSITION
SENSOR
KEY
INTERLOCK
SOLENOID IGNITION
KEY
SWITCH UNDER-DASH
FUSE/RELAY BOX
No.35(7.5A)
F-CAN
TRANSCEIVER
CPU A/T
GEAR
POSITION
INDICATOR
DRIVER
CIRCUIT
PARK PIN
SWITCH DASH-LIGHT
BRIGHTNESS
CONTROL
CIRCUIT
POWERTRAIN CONTROL
MODULE (PCM)
MULTIPLEX
INTEGRATED
CONTROL
UNIT (MICU)
SHIFT
INDICATOR
RED/WHT
GRN
G504
BLK/RED* BLK* *1: ’06 model
*2: ’07 09 models
BLK PCM Connector Terminal Locations GND
1
2
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Page 1202 of 2893
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YES
NO
14-28514-285
Key Interlock System Circuit
Troubleshooting
STEERING LOCK ASSEMBLY
CONNECTORKEYSOL (BLU)
33. Check the APP SENSOR in the Data List with theHDS. Do not press the accelerator.
Check the APP sensor (see page 11-268).
Reconnect all connectors, then update the
PCM if it does not have the latest software
(see page 11-227), or substitute a known- good PCM
(see page 11-7), then recheck. If the symptom goes
away with a known-good PCM, replace the original
PCM (see page 11-228). SRS components are located in this area. Review the
SRS component locations (see page 24-11) and the
precautions and procedures (see page 24-13) before
doing repair or service.
1. Turn the ignition switch to ACCESSORY (I). The shift lever must be in P.
2. Disconnect the steering lock assembly connector.
3. Check if the ignition switch can be turned to the LOCK (0) position.
Go to step 4.
Replace the ignition key cylinder/steering lock
assembly (see page 17-14).
4. Turn the ignition switch to LOCK (0).
5. Move the shift lever out of P.
6. Check for continuity between steering lock assembly connector terminal No. 3 and body
ground.
Repair short to body ground in the wire
between the key interlock solenoid and the
MICU.
Go to step 7.
7. Remove the shift lever assembly (see page 14-254).
(cont’d)
Wire side of female terminals
I s t he accel er at or ped al posi t i on sensor openi ng11 % or abov e, or t he sensor v ol t age 0.90 V orabov e?
Can t he i gni t i on sw i t ch be t ur ned t o LOCK ( 0)?
Is there continuity?
08/08/21 14:50:08 61SNR030_140_0287
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Page 1203 of 2893
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NO
YES
NO
YES
NO
14-28514-285
Key Interlock System Circuit
Troubleshooting
STEERING LOCK ASSEMBLY
CONNECTORKEYSOL (BLU)
33. Check the APP SENSOR in the Data List with theHDS. Do not press the accelerator.
Check the APP sensor (see page 11-268).
Reconnect all connectors, then update the
PCM if it does not have the latest software
(see page 11-227), or substitute a known- good PCM
(see page 11-7), then recheck. If the symptom goes
away with a known-good PCM, replace the original
PCM (see page 11-228). SRS components are located in this area. Review the
SRS component locations (see page 24-11) and the
precautions and procedures (see page 24-13) before
doing repair or service.
1. Turn the ignition switch to ACCESSORY (I). The shift lever must be in P.
2. Disconnect the steering lock assembly connector.
3. Check if the ignition switch can be turned to the LOCK (0) position.
Go to step 4.
Replace the ignition key cylinder/steering lock
assembly (see page 17-14).
4. Turn the ignition switch to LOCK (0).
5. Move the shift lever out of P.
6. Check for continuity between steering lock assembly connector terminal No. 3 and body
ground.
Repair short to body ground in the wire
between the key interlock solenoid and the
MICU.
Go to step 7.
7. Remove the shift lever assembly (see page 14-254).
(cont’d)
Wire side of female terminals
I s t he accel er at or ped al posi t i on sensor openi ng11 % or abov e, or t he sensor v ol t age 0.90 V orabov e?
Can t he i gni t i on sw i t ch be t ur ned t o LOCK ( 0)?
Is there continuity?
08/08/21 14:50:08 61SNR030_140_0287
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Page 1204 of 2893
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YES
NO YES
NO
14-286A/T Interlock System
Key Interlock System Circuit Troubleshooting (cont’d)
P-PIN (LT BLU)
PARK PIN SWITCH/
A/T GEAR POSITION INDICATOR
PANEL LIGHT CONNECTOR
P-PIN (BLK) GND (WHT/BLK)
PARK PIN SWITCH/
A/T GEAR POSITION INDICATOR
PANEL LIGHT CONNECTOR UNDER-DASH FUSE/RELAY BOX
CONNECTOR F (34P)
ATPP (GRN)
8. Check for continuity between park pin switch/A/Tgear position indicator panel light connector
terminal No. 3 and body ground.
Repair short to body ground in the wire
between park pin switch/A/T gear position indicator
panel light connector terminal No. 3 and the
MICU.
Go to step 9.
9. Shift the shift lever to P.
10. Check for continuity between park pin switch/A/T gear position indicator panel light connector
terminals No. 3 and No. 4. Do not push the shift
lever button.
Faulty park pin switch, replace the park pin
switch (see page 14-269).
Go to step 11. 11. Disconnect under-dash fuse/relay box connector F
(34P).
12. Turn the ignition switch to ON (II).
13. Measure the voltage between the No. 27 terminal of under-dash fuse/relay box connector F (34P) and
body ground.
Substitute a known-good MICU, and
recheck.
Repair or short in the wire between PCM
connector terminal B13, transmission range switch,
and MICU.
Wire side of female terminals
Terminal side of male terminals Wire side of female terminals
Is there continuity?
Is there continuity? I s t her e no v ol t age w hen t he shi f t l ev er i s i n P, and
i s t her e v ol t age w hen t he shi f t l ev er shi f t s out ofP?
08/08/21 14:50:08 61SNR030_140_0288
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