Acura CSX. Instruction — page 88

06

ECM/PCM Inputs and Outputs at Connector A (

) (44P)

Terminal

number

Wire color

Terminal name

Description

Signal

11-26

Fuel and Emissions Systems

NOTE: Standard battery voltage is about 12 V.

24

GRY

VCC5 (SENSOR VOLTAGE)

Provides sensor reference
voltage

With ignition switch ON (II): about 5.0 V

25

BRN

VCC4 (SENSOR VOLTAGE)

Provides sensor reference
voltage

With ignition switch ON (II): about 5.0 V

26

LT GRN

FTP (FUEL TANK
PRESSURE (FTP) SENSOR)

Detects FTP sensor signal

With ignition switch ON (II) and fuel fill cap
removed: about 2.5 V

27

PNK

SLS (SHIFT LOCK
SOLENOID)

Drives shift lock solenoid

With ignition switch ON (II), in P, brake pedal
pressed, and accelerator released:
battery voltage

27

GRN

RVS (REVERSE LOCKOUT
SOLENOID)

Drives reverse lockout
solenoid

With vehicle speed below 9 mph (15 km/h):
battery voltage
With vehicle speed above 13 mph (20 km/h):
about 0 V

28

BLU

NEP (ENGINE SPEED
PULSE)

Outputs engine speed pulse

With engine running: pulses

29

BLU

VSSOUT (VEHICLE SPEED
SIGNAL OUTPUT)

Sends vehicle speed signal

Depending on vehicle speed: pulses

31

BRN

SCS (SERVICE CHECK
SIGNAL)

Detects service check signal

With service check signal shorted using HDS:
about 0 V
With service check signal opened: about 5.0 V

33

GRN

ECT2 (ENGINE COOLANT
TEMPERATURE (ECT)
SENSOR 2)

Detects ECT sensor 2 signal

With ignition switch ON (II): about 0.1

4.8 V

(depending on engine coolant temperature)

34

LT BLU

SG5 (SENSOR GROUND)

Sensor ground

Less than 1.0 V at all times

35

BLU

SG4 (SENSOR GROUND)

Sensor ground

Less than 1.0 V at all times

36

WHT

CANH (CAN
COMMUNICATION SIGNAL
HIGH)

Sends communication
signal

With ignition switch ON (II): about 2.5 V (pulses)

37

RED

CANL (CAN
COMMUNICATION SIGNAL
LOW)

Sends communication
signal

With ignition switch ON (II): about 2.5 V (pulses)

1: A/T
3: K20Z3 engine

1

3

Terminal side of female terminals

08/08/21 14:12:43 61SNR030_110_0026

07

ECM/PCM Inputs and Outputs at Connector A (

) (44P)

Terminal

number

Wire color

Terminal name

Description

Signal

11-27

NOTE: Standard battery voltage is about 12 V.

39

BRN

BKSWNC (BRAKE PEDAL
POSITION SWITCH)

Detects brake pedal
position switch signal

With ignition switch ON (II) and brake pedal
released: battery voltage
With ignition switch ON (II) and brake pedal
pressed: about 0 V

40

LT GRN

BKSW (BRAKE PEDAL
POSITION SWITCH)

Detects brake pedal
position switch signal

With brake pedal released: about 0 V
With brake pedal pressed: battery voltage

41

LT BLU

CRMTCLS (CRUISE
CLUTCH PEDAL POSITION
SIGNAL)

Detects clutch pedal
position switch signal

With ignition switch ON (II) and clutch pedal
released: about 0 V
With ignition switch ON (II) and clutch pedal
pressed: battery voltage

42

RED

WEN (WRITE ENABLE
SIGNAL)

Detects write enable signal

With ignition switch ON (II): about 0 V

44

PNK

S-NET5V (SERIAL
COMMUNICATION FOR
IMMOBILIZER)

Sends serial
communication signal

With ignition switch ON (II): pulses
With ignition switch OFF: about 5.0 V

2: M/T

2

Terminal side of female terminals

08/08/21 14:12:43 61SNR030_110_0027

*06

ECM/PCM Inputs and Outputs at Connector B (

) (44P)

Terminal

number

Wire color

Terminal name

Description

Signal

11-28

Fuel and Emissions Systems

NOTE: Standard battery voltage is about 12 V.



1

BLK/RED

(BLK)

PG2 (POWER GROUND)

Ground circuit for ECM/
PCM

Less than 1.0 V at all times

2

BLU/RED

EGR (EXHAUST GAS
RECIRCULATION (EGR)
VALVE)

Drives EGR valve

With EGR operating: duty controlled
With EGR not operating: about 0 V

3

YEL/BLU

PCS (EVAPORATIVE
EMISSION (EVAP)
CANISTER PURGE VALVE)

Drives EVAP canister purge
valve

With engine running, engine coolant below 60 °C
(140 °F): battery voltage
With engine running, engine coolant above 60 °C
(140 °F): duty controlled

4

BLK/WHT

SO2SHTC (SECONDARY
HEATED OXYGEN SENSOR
(SECONDARY HO2S)
HEATER (SENSOR 2))

Drives secondary HO2S
heater (sensor 2)

With ignition switch ON (II): battery voltage
With warmed up engine running: duty controlled

7

YEL/RED

OPSW (OIL PRESSURE
SWITCH)

Detects engine oil pressure
signal

With ignition switch OFF: about 0 V
With engine running: battery voltage

8

BLU/RED

OP2SW (2ND CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH)

Detects 2nd clutch
transmission fluid pressure
switch input

With ignition switch ON (II):

Without 2nd clutch pressure: about 5.0 V
With 2nd clutch pressure: about 0 V

9

BLU/WHT

OP3SW (3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH)

Detects 3rd clutch
transmission fluid pressure
switch input

With ignition switch ON (II):

Without 3rd clutch pressure: about 5.0 V
With 3rd clutch pressure: about 0 V

10

BLU/BLK

SHA (SHIFT SOLENOID
VALVE A)

Drives shift solenoid
valve A

With engine running in R, D, and S (in 1st, 4th, or
5th gears): battery voltage
With engine running in P, N, D, and S (in 2nd and
3rd gears): about 0 V

11

GRN/WHT

SHB (SHIFT SOLENOID
VALVE B)

Drives shift solenoid
valve B

With engine running in P, R, N, D, and S (in 1st and
2nd gears): battery voltage
With engine running in D and S (in 3rd, 4th, 5th
gears): about 0 V

12

RED/BLK

ATPN (TRANSMISSION
RANGE SWITCH N)

Detects transmission range
switch N position signal
input

In N: about 0 V
In any position other than N: about 5.0 V

13

BLU/BLK

ATPP (TRANSMISSION
RANGE SWITCH P)

Detects transmission range
switch P position signal
input

In P: about 0 V
In any position other than P: about 5.0 V

14

WHT

ATPR (TRANSMISSION
RANGE SWITCH R)

Detects transmission range
switch R position signal
input

In R: about 0 V
In any position other than R: about 5.0 V

15

RED

ATPS (TRANSMISSION
RANGE SWITCH S)

Detects transmission range
switch S position signal
input

In S: about 0 V
In any position other than S: battery voltage

1: A/T
4: K20Z2 engine
5: ’07-09 models

5

4

1

1

1

1

1

1

1

1

Terminal side of female terminals

08/08/21 14:12:43 61SNR030_110_0028

*07

ECM/PCM Inputs and Outputs at Connector B (

) (44P)

Terminal

number

Wire color

Terminal name

Description

Signal

11-29

NOTE: Standard battery voltage is about 12 V.

16

BLU/YEL

SUPP (PADDLE SHIFTER
(UPSHIFT SWITCH))

Detects paddle shifter
(upshift switch)

In S:

With paddle shifter

(upshift switch) pressed:

about 0 V
With paddle shifter

(upshift switch) released:

battery voltage

17

WHT/RED

NM (INPUT SHAFT
(MAINSHAFT) SPEED
SENSOR)

Detects input shaft
(mainshaft) speed sensor
signal

With ignition switch ON (II): about 0 V
With engine idling in N: about 2.5 V

18

YEL/BLU

(YEL)

VCC2 (SENSOR VOLTAGE)

Provides sensor reference
voltage

With ignition switch ON (II): about 5.0 V

20

GRN

SHC (SHIFT SOLENOID
VALVE C)

Drives shift solenoid
valve C

With engine running in N and S (in 1st, 3rd, and 5th
gears): battery voltage
With engine running in P, R, D, and S (in 2nd and
4th gears): about 0 V

21

YEL/GRN

ATPD (TRANSMISSION
RANGE SWITCH D)

Detects transmission range
switch D position signal
input

In D: about 0 V
In any position other than D: battery voltage

22

RED/WHT

ATPRVS (TRANSMISSION
RANGE SWITCH RVS)

Detects transmission range
switch RVS position signal
input

In R: about 0 V
In any position other than R: battery voltage

23

RED/WHT

ECT1 (ENGINE COOLANT
TEMPERATURE (ECT)
SENSOR 1)

Detects ECT sensor 1 signal

With ignition switch ON (II): about 0.1

4.8 V

(depending on engine coolant temperature)

24

YEL

SHE (SHIFT SOLENOID
VALVE E)

Drives shift solenoid
valve E

With engine running in P and R: battery voltage
With engine running in N, D, and S (in 1st gear):
about 0 V

25

BLU/YEL

LSC (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE C)

Drives A/T clutch pressure
control solenoid valve C

With ignition switch ON (II): current controlled

26

GRN/RED

SHD (SHIFT SOLENOID
VALVE D)

Drives shift solenoid
valve D

With engine running in D and S (in 2nd and 5th
gears): battery voltage
With engine running in P, R, N, D, and S (in 1st, 3rd,
and 4th gears): about 0 V

27

RED/YEL

TATF (ATF TEMPERATURE
SENSOR)

Detects ATF temperature
signal

With ignition switch ON (II): about 0.2

4.0 V

(about 1.8 V at operating temperature)
(depending on ATF temperature)

28

BLU/YEL

ATPFWD (TRANSMISSION
RANGE SWITCH FWD)

Detects transmission range
switch D and S positions
signal

In D and S: about 0 V
In any other position D and S: battery voltage

29

WHT/BLK

EGRP (EXHAUST GAS
RECIRCULATION (EGR)
VALVE POSITION SENSOR)

Detects EGR valve position
sensor signal

With engine running: about 1.2

3.0 V

(depending on EGR valve lift)

1: A/T
3: K20Z3 engine
4: K20Z2 engine

1

1

3

1

1

1

1

1

1

1

1

4

Terminal side of female terminals

08/08/21 14:12:44 61SNR030_110_0029

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