ECM/PCM Inputs and Outputs at Connector B (Δ) (44P)

Fig 1: Identifying ECM/PCM Inputs And Outputs Connector Terminals B (44P)

NOTE: Standard battery voltage is about 12 V.

BATTERY VOLTAGE REFERENCE

Terminal number

Wire color

Terminal name

Description

Signal

BLK/RED (BLK)⁽⁵⁾

PG2 (POWER GROUND)

Ground circuit for ECM/ PCM circuit

Less than 1.0 V at all times

2⁽⁴⁾

BLU/RED

EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE)

Drives EGR valve

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

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

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 fully warmed up engine running: duty controlled

YEL/RED

OPSW (OIL PRESSURE SWITCH)

Detects engine oil pressure signal

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

8⁽¹⁾

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⁽¹⁾

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⁽¹⁾

BLU/BLK

SHA (SHIFT SOLENOID VALVE A)

Drives shift solenoid valve A

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

11⁽¹⁾

GRN/WHT

SHB (SHIFT SOLENOID VALVE B)

Drives shift solenoid valve B

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

12⁽¹⁾

RED/BLK

ATPN (TRANSMISSION RANGE SWITCH NEUTRAL)

Detects transmission range switch N position signal input

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

13⁽¹⁾

BLU/BLK

ATPP (TRANSMISSION RANGE SWITCH PARK)

Detects transmission range switch P position signal input

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

14⁽¹⁾

WHT

ATPR (TRANSMISSION RANGE SWITCH R)

Detects transmission range switch R position signal input

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

15⁽¹⁾

RED

ATPS (TRANSMISSION RANGE SWITCH S)

Detects transmission range switch S position signal input

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

16⁽¹⁾

BLU/YEL

SUPP (STEERING WHEEL UPSHIFT (+) SWITCH)

Detects steering wheel upshift (+) switch signal

In S position:
With +switch pressed: about 0 V
With +switch released: battery voltage

17⁽¹⁾

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 position: about 2.5 V

YEL/BLU (YEL)⁽³⁾

VCC2 (SENSOR VOLTAGE)

Provides sensor reference voltage

With ignition switch ON (II): about 5.0 V

20⁽¹⁾

GRN

SHC (SHIFT SOLENOID VALVE C)

Drives shift solenoid valve C

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

21⁽¹⁾

YEL/GRN

ATPD (TRANSMISSION RANGE SWITCH D)

Detects transmission range switch D position signal input

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

22⁽¹⁾

RED/WHT

ATPRVS (TRANSMISSION RANGE SWITCH R)

Detects transmission range switch R position signal input

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

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⁽¹⁾

YEL

SHE (SHIFT SOLENOID VALVE E)

Drives shift solenoid valve E

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

25⁽¹⁾

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⁽¹⁾

GRN/RED

SHD (SHIFT SOLENOID VALVE D)

Drives shift solenoid valve D

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

27⁽¹⁾

RED/YEL

ATFT (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⁽¹⁾

BLU/YEL

ATPFWD (TRANSMISSION RANGE SWITCH D/S POSITION)

Detects transmission range switch D and S positions signal

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

29⁽⁴⁾

WHT/BLK

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

Detects EGR valve position sensor signal

With engine running: 1.2-3.0 V (depending on EGR valve lift)

RED/BLK

VG+ (MASS AIR FLOW (MAF) SENSOR +SIDE)

Detects MAF sensor signal

At idle: 1.1-1.6 V
(between VG+ terminal and VG- terminal)

RED/YEL

IAT (INTAKE AIR TEMPERATURE (IAT) SENSOR)

Detects IAT sensor signal

With ignition switch ON (II): about 0.1-4.0 V (about 1.8 V at normal operating temperature)

BLK/BLU

VG-(MASS AIR FLOW (MAF) SENSOR-SIDE)

Ground for MAF sensor signal

GRN/BLK

SG2 (SENSOR GROUND)

Sensor ground

Less than 1.0 V at all times

GRN/YEL

VTS (ROCKER ARM OIL CONTROL SOLENOID)

Drives rocker arm oil control solenoid

At idle: about 0 V

35⁽¹⁾

BRN

LSB (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B)

Drives A/T clutch pressure control solenoid valve B

With ignition switch ON (II): current controlled

BLK

PG1 (POWER GROUND)

Ground circuit for ECM/ PCM circuit

Less than 1.0 V at all times

40⁽¹⁾

BRN

SDNP (STEERING WHEEL DOWNSHIFT (-) SWITCH)

Detects steering wheel downshift (-) switch signal

In S position:
With -switch pressed: 0 V
With -switch released: about 5.0 V

WHT/GRN

ALTC (ALTERNATOR CONTROL)

Sends alternator control signal

With fully warmed up engine running: 5.0 V (depending on electrical load)

WHT/BLU

ALTL (ALTERNATOR L SIGNAL)

Detects alternator L signal

With ignition switch ON (II): about 0 V
With engine running: battery voltage

WHT/RED

ALTF (ALTERNATOR FR SIGNAL)

Detects alternator FR signal

With engine running: about 2.6-3.4 V (depending on electrical load)

44⁽¹⁾

RED/BLK

LSA (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A)

Drives A/T clutch pressure control solenoid valve A

With ignition switch ON (II): current controlled

⁽¹⁾

A/T

⁽²⁾

M/T

⁽³⁾	K20Z3 engine

⁽⁴⁾	K20Z2 engine

⁽⁵⁾

'07 model