2006 ACURA CSX fuse box
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How to Troubleshoot Circuits at the PCM
Connectors
14-5
A
D E
B
A
C A
D
B
C
A
NOTE: The PCM overwrites data and monitors the EVAP
system for about 30 minutes after the ignition switch is
turned to LOCK (0) or ACC (I). Jumping the SCS line
after turning the ignition switch to LOCK (0) or ACC (I)
cancels this function. Disconnecting the PCM during
this function, without jumping the SCS line first, can
damage the PCM.
1. Make sure the ignition switch is turned to LOCK (0), then jump the SCS line with the HDS.
2. Remove the cover (A).
3. Lift up the under-hood fuse/relay box (D).
4. Remove the coolant reservoir (E). Disconnect PCM connectors A, B, and C, and probe the terminals
from the terminal side of the connectors.
NOTE: PCM connectors A, B, and C have symbols
(A= , B= , C= ) embossed on them for
identification. 5. When diagnosis/troubleshooting is done at the
PCM connector, use the terminal test port (A) above
the terminal you need to check.
6. Connect one side of the patch cord’s terminals (A) to a commercially available digital multimeter (B),
and connect the other side cord’s terminals (C) to a
commercially available banana jack (Pomona
Electronics Tool No. 3563 or equivalent) (D).
7. Gently contact the pin probe (male) at the terminal test port from the terminal side. Do not force the
tips into the terminals.
For accurate results, always use the pin probe (male).
To prevent damage to the connector terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.
Do not puncture the insulation on a wire. Punctures can cause poor or intermittent
electrical connections.
(cont’d)
08/08/21 14:37:07 61SNR030_140_0007
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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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Page 995 of 2893
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14-79
RED
3
SHE B24
YEL
BRN
ORN A31
SCS
GRN/WHTBLU/BLK
GRN
GRN/RED
C13 VCC1
YEL/RED
SG1
C14 C43 NC
BLK/WHT
1
2
3
B9 B8
C (44P)
B(44P)
A(44P)
Terminal side of female terminalsB26
SHD
8
YEL
7
GRN/BLK WHT WHT
RED/YEL 6
TATF B27 1 2
5
SHC SHB SHA
GRNBLU
OP3SW
BLU/WHTBLU/RED
OP2SW
5V
B25 B44
B20 B11 B10 BLK/RED*
ORN
G101
LSC
2 1
BLU/YEL
12 V
LSB BRN
BLK/RED*1
2 2 1
BLK/RED*
LSA
B35 RED/BLK
2ND CLUTCH TRANSMISSION
FLUID PRESSURE SWITCH
3RD CLUTCH TRANSMISSION
FLUID PRESSURE SWITCHA/T CLUTCH
PRESSURE
CONTROL
SOLENOID
VALVE A
SHIFT SOLENOID
VALVE A A/T CLUTCH
PRESSURE
CONTROL
SOLENOID
VALVE B
A/T CLUTCH
PRESSURE
CONTROL
SOLENOID
VALVE C
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE D ATF
TEMPERATURE
SENSOR
POWERTRAIN CONTROL
MODULE (PCM)
OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR DATA LINK
CONNECTOR
(DLC)
SHIFT SOLENOID
VALVE E*1: ’06 model
*2: ’07 09 models
BLK* BLK*
BLK*
PCM Connector Terminal Locations
GRN/WHT
YEL/RED
GRN/WHT
GRN/BLK
3 2 1
WHT/RED NM
B17
B33 SG2
GRN/BLK YEL/BLU
VCC2
B18
INPUT SHAFT
(MAINSHAFT)
SPEED SENSOR YEL/RED
GRN/WHT C11 MAP
GRN/RED
1
2
3
MAP SENSOR
YEL/BLKBRN/YEL C31 CMPB
GRN
1
2
3
CMP SENSOR B
YEL/BLK
BRN/YEL C32 CKP
BLU/YEL
1
2
3
CKP SENSOR
G101UNDER-HOOD
FUSE/RELAY BOX
No. 19 (15 A)
36
444342
27 28
30 33 34 35
32 25
20 21 22 16 18
17
13 14 15
12
11 789
31
3123
31
456
15
14
2120 25
24
34
33
29
28
27
42 44
40
3736 31
123456 9
87
11 12 1514 13 17 1816
32
29
30
42 43 44
4039
36
18
17
16 19
3598
10 21
20
27
2
26 29 40
4
23 24
41 23
41
22
10
26 39
11
1
2
2
2
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Page 1180 of 2893
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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 1197 of 2893
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YES
NO
YES
NO
YES
NO
14-280A/T Interlock System
Shift Lock System Circuit Troubleshooting
A
SHIFT LOCK SOLENOID CONNECTOR
IG1 (YEL)
SHIFT LOCK SOLENOID CONNECTOR IG1 (YEL) SLS (PNK)
1. Connect the HDS to the DLC located under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II). Make sure the HDS communicates with the PCM. If it does not, go
to the DLC circuit troubleshooting (see page
11-204).
3. Select Shift Lock Solenoid Test in the Miscellaneous Test Menu, and check that the shift
lock solenoid operates with the HDS.
Go to step 16.
Go to step 5.
4. Turn the ignition switch to LOCK (0).
5. Remove the center console (see page 20-92).
6. Disconnect the shift lock solenoid connector.
7. Turn the ignition switch to ON (II). 8. Measure the voltage between shift lock solenoid
connector terminal No. 1 and body ground.
Go to step 9.
CheckforablownNo.10(7.5A)fuseinthe
under-dash fuse/relay box. If the fuse is OK, repair
open in the wire between the shift lock solenoid
connector and the under-dash fuse/relay box.
9. Shift the shift lever to P, and press the brake pedal. Do not press the accelerator.
10. Measure the voltage between shift lock solenoid connector terminals No. 1 and No. 2 while pressing
the brake pedal.
Go to step 11.
Go to step 12.
Wire side of female terminals
Wire side of female terminals
Does t he shi f t l ock sol enoi d w or k pr oper l y ? Is t her e about bat t er y v ol t age?
Is there battery voltage?
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Page 1204 of 2893
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YES
NO
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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Page 1340 of 2893
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17-18EPS Components
Component Location Index
STEERING GEARBOX
EPS MOTOR
BATTERY
DATA LINK
CONNECTOR (DLC)
GAUGE CONTROL
MODULE (TACH)
UNDER-HOOD
FUSE/RELAY BOX
UNDER-DASH
FUSE/RELAY BOX
EPS CONTROL UNIT
EPS INDICATORRemoval and Installation, page 17-65
Rack End Removal and Installation, page 17-79
Rack Guide Removal/Installation, page 17-83
Removal/Installation,
page 17-63
Removal/Installation, page 17-84
08/08/21 14:53:21 61SNR030_170_0019
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