PCM Inputs and Outputs at PCM Connector C (◦) (49P) ('07 model)

Fig 1: Identifying PCM Inputs And Outputs At PCM Connector C (49P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

TERMINAL DESCRIPTION

Terminal number

Wire color

Terminal name

Description

Signal

BLK

PGMETCS (POWER GROUND ETCS)

Ground circuit for PCM

Less than 0.2 V at all times

BLU

ETCSM+ (THROTTLE ACTUATOR +SIDE)

Drives throttle actuator

With ignition switch ON (II): about 0 V

GRN

ETCSM - (THROTTLE ACTUATOR-SIDE)

Ground for throttle actuator

With ignition switch ON (II): about 0 V

YEL/GRN

IG1 ETCS (IGNITION SIGNAL ETCS)

Detects ignition signal

With ignition switch ON (II): battery voltage

BLK/WHT

SO2SHTCB1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S) (BANK 1, SENSOR 2) HEATER CONTROL)

Drives rear secondary HO2S (Bank 1, sensor 2) heater

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

BLK/WHT

AFSHTCB1 (REAR AIR FUEL RATIO (REAR A/F) SENSOR (BANK 1, SENSOR 1) HEATER CONTROL)

Drives rear A/F sensor (Bank 1, sensor 1) heater

With ignition switch ON (II): battery voltage
With warmed up engine running: about 0 V or duty controlled

GRN/RED

SO2SHTCB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S) (BANK 2, SENSOR 2) HEATER CONTROL)

Drives front secondary HO2S (Bank 2, sensor 2) heater

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

GRN/WHT

AFSHTCB2 (FRONT AIR FUEL RATIO (FRONT A/F) SENSOR (BANK 2, SENSOR 1) HEATER CONTROL)

Drives front A/F sensor (Bank 2, sensor 1) heater

With ignition switch ON (II): battery voltage
With warmed up engine running: about 0 V or duty controlled

GRN/RED

SHD (SHIFT SOLENOID VALVE D)

Drives shift solenoid valve D

With engine running in N, and in D during no lock-up condition: about 0 V
With engine running in P and R, and in D during lock-up condition: battery voltage

BLU/RED

EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE)

Drives EGR valve

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

11⁽¹⁾

YEL/BLU

VCC6 (SENSOR VOLTAGE)

Provides sensor reference voltage

With ignition switch ON (II): about 5.0 V

YEL/BLU

VCC2 (SENSOR VOLTAGE)

Provides sensor reference voltage

With ignition switch ON (II): about 5.0 V

GRN/YEL

SG6 (SENSOR GROUND)

Sensor ground

Less than 0.2 V at all times

GRN/YEL

SG2 (SENSOR GROUND)

Sensor ground

Less than 0.2 V at all times

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

BLU/YEL

ATPFWD (TRANSMISSION RANGE SWITCH FWD)

Detects transmission range switch FWD position signal input

In D, 2, and 1: about 0 V
In any position other than D, 2, and 1: battery voltage

RED/WHT

ATPRVS (TRANSMISSION RANGE SWITCH RVS)

Detects transmission range switch RVS position signal input

In P, R, and N: about 0 V
In any position other than P, R, and N: battery voltage

BLU/YEL

SHA (SHIFT SOLENOID VALVE A)

Drives shift solenoid valve A

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

RED

LSA (AST CLUTCH PRESSURE CONTROL SOLENOID VALVE A)

Drives A/T clutch pressure control solenoid valve A

With ignition switch ON (II): current controlled

RED/YEL

IAT (INTAKE AIR TEMPERATURE (IAT) SENSOR)

Detects IAT sensor signal

With ignition switch ON (II): about 0.1-4.8 V (depending on intake air temperature)

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: battery voltage

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: battery voltage

BLU/BLK

OP2SW (TRANSMISSION FLUID PRESSURE SWITCH A (2ND CLUTCH))

Detects transmission fluid pressure switch A (2nd clutch) input

With ignition switch ON (II):

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

GRN/WHT

SHB (SHIFT SOLENOID VALVE B)

Drives shift solenoid valve B

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

30⁽¹⁾

BLU/YEL

POILCS (ROCKER ARM OIL PRESSURE SENSOR)

Detects rocker arm oil pressure sensor signal

With ignition switch ON (II): about 0.5 V
With engine running: about 1.5 V (depending on engine oil pressure)

GRN/RED

ECT2 (ENGINE COOLANT TEMPERATURE SENSOR (ECT) SENSOR 2)

Detects ECT sensor 2 signal

With ignition switch ON (II): about 0.1-4.8 V (depending on engine coolant temperature)

RED/WHT

ECT1 (ENGINE COOLANT TEMPERATURE SENSOR (ECT) SENSOR 1)

Detects ECT sensor 1 signal

With ignition switch ON (II): about 0.1-4.8 V (depending on engine coolant temperature)

BLU/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)

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)

BRN

ATP1 (TRANSMISSION RANGE SWITCH 1)

Detects transmission switch 1 position signal input

In 1: about 0 V
In any position other than 1: battery voltage

BLU/YEL

OP4SW (4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH)

Detects 4th clutch transmission fluid pressure switch input

With ignition switch ON (II):

Without 4th clutch pressure: about 5.0 V
With 4th clutch pressure: about 0 V

BLU/WHT

OP3SW (TRANSMISSION FLUID PRESSURE SWITCH B (3RD CLUTCH))

Detects transmission fluid pressure switch B (3rd clutch) input

With ignition switch ON (II):

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

GRN

SHC (SHIFT SOLENOID VALVE C)

Drives shift solenoid valve C

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

RED/YEL

PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE)

Drives EVAP canister purge valve

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

BRN/YEL

LG1 (LOGIC GROUND)

Ground circuit for PCM

Less than 0.2 V at all times

WHT/BLU

ALTL (ALTERNATOR L SIGNAL)

Detects alternator L signal

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

WHT/GRN

ALTC (ALTERNATOR CONTROL)

Sends alternator control signal

With warmed up engine running: about 7.5 V (depending on electrical load)

WHT/RED

ALTF (ALTERNATOR FR SIGNAL)

Detects alternator FR signal

With engine running: about 0-5.0 V (depending on electrical load)

BLU

ATP2 (TRANSMISSION RANGE SWITCH 2)

Detects transmission switch 2 position signal input

In 2: about 0 V
In any position other than 2: battery voltage

RED/BLU

KS (KNOCK SENSOR)

Detects knock sensor signal

With engine knocking: pulses

48⁽¹⁾

WHT/BLU

IMT+ (INTAKE MANIFOLD TUNING (IMT) ACTUATOR +SIDE)

Drives IMT actuator

With ignition switch ON (II): about 0 V

49⁽¹⁾

WHT/RED

IMT - (INTAKE MANIFOLD TUNING (IMT) ACTUATOR-SIDE)

Drives IMT actuator

With ignition switch ON (II): about 0 V

⁽¹⁾	J35A7 engine