PCM Inputs and Outputs at Connector B (Δ) (49P)

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

Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE: Standard battery voltage is about 12 V.

BATTERY VOLTAGE SPECIFICATION

Terminal number

Wire color

Terminal name

Description

Signal

BLK

PG2 (POWER GROUND)

Ground circuit for PCM

Less than 0.2 V at all times

BLK/YEL⁽¹⁾
TAN⁽²⁾

VBSOL1 (POWER SOURCE FOR SOLENOID VALVES)

Power source for solenoid valves

With ignition switch ON (II): battery voltage

YEL/BLK⁽¹⁾
YEL⁽²⁾

IGP (POWER SOURCE)

Power source for PCM circuit

With ignition switch ON (II): battery voltage

BRN⁽¹⁾
GRN⁽²⁾

INJ1 (No. 1 INJECTOR)

Drives No. 1 injector

At idle: duty controlled
With ignition switch ON (II): battery voltage

BLK/RED⁽¹⁾
PNK⁽²⁾

INJ5 (No. 5 INJECTOR)

Drives No. 5 injector

YEL⁽¹⁾
TAN⁽²⁾

INJ4 (No. 4 INJECTOR)

Drives No. 4 injector

BLU

INJ3 (No. 3 INJECTOR)

Drives No. 3 injector

RED

INJ2 (No. 2 INJECTOR)

Drives No. 2 injector

WHT/BLU⁽¹⁾
LT BLU⁽²⁾

INJ6 (No. 6 INJECTOR)

Drives No. 6 injector

BRN/WHT⁽¹⁾
PUR⁽²⁾

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/RED⁽¹⁾
YEL⁽²⁾

IGPLS5 (No. 5 IGNITION COIL PULSE)

Drives No. 5 ignition coil

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

BRN/WHT⁽¹⁾
TAN⁽²⁾

IGPLS6 (No. 6 IGNITION COIL PULSE)

Drives No. 6 ignition coil

BLU⁽¹⁾
WHT⁽²⁾

SB1 (VS CELL+BANK 1)

Detects rear A/F sensor (Bank 1, sensor 1)VS CELL signal

With warmed up engine running: about 3.4-4.8 V

RED/BLU⁽¹⁾
GRN⁽²⁾

VSB2 (VS CELL + BANK 2)

Detects front A/F sensor (Bank 2, sensor 1)VS CELL signal

With warmed up engine running: about 3.4-4.8 V

RED

VCENTB1 (VIRTUAL GROUND BANK 1)

Reference voltage supply for rear A/F sensor (Bank 1, sensor 1)

With warmed up engine at idle: about 3.4-3.8 V

16⁽¹⁾

WHT

SHO2SB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S) BANK 2, SENSOR 2)

Detects front secondary HO2S (Bank 2, sensor 2) signal

With throttle fully opened from idle with warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V

16⁽²⁾

BLU

SHO2SB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S) BANK 2, SENSOR 2)

Detects front secondary HO2S (Bank 2, sensor 2) signal

With throttle fully opened from idle with warmed up engine: about 0.6 V*
With throttle quickly closed: below 0.4 V*
(*: between SHO2SB2 terminal and SO2SGB2 terminal)

RED/BLK⁽¹⁾
RED⁽²⁾

TPSA (THROTTLE POSITION (TP) SENSOR A)

Detects TP sensor A signal

With throttle fully open: about 3.9 V
With throttle fully closed: about 0.9 V

BLU⁽¹⁾
PNK⁽²⁾

VCC5 (SENSOR VOLTAGE)

Provides sensor reference voltage

With ignition switch ON (II): about 5.0 V

WHT/BLK⁽¹⁾
LT GRN⁽²⁾

IMTM (INTAKE MANIFOLD TUNING (IMT) VALVE MONITOR)

Detects IMT valve position

With ignition switch ON (II): about 5.0 V
With engine speed above 4, 000 rpm: about 0 V

BLU/WHT⁽¹⁾
LT BLU⁽²⁾

VTPSW (ROCKER ARM OIL PRESSURE SWITCH

Detects rocker arm oil pressure switch signal

At idle: about 0 V

GRN/RED⁽¹⁾
PNK⁽²⁾

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

WHT/BLU⁽¹⁾
BLU⁽²⁾

IGPLS3 (No. 3 IGNITION COIL PULSE)

Drives No. 3 ignition coil

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

BRN⁽¹⁾
LT BLU⁽²⁾

IGPLS4 (No. 4 IGNITION COIL PULSE)

Drives No. 4 ignition coil

RED/WHT⁽¹⁾
BRN⁽²⁾

VCENTB2 (VIRTUAL GROUND BANK 2)

Reference voltage supply for front A/F sensor (Bank 2, sensor 1)

With warmed up engine at idle: about 3.4-4.8 V

25⁽¹⁾

GRN

SHO2SB1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S) BANK 1, SENSOR 2)

Detects rear secondary HO2S (Bank 1, sensor 2) signal

With throttle fully opened from idle with warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V

25⁽²⁾

RED

SHO2SB1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S) BANK 1, SENSOR 2)

Detects rear secondary HO2S (Bank 1, sensor 2) signal

With throttle fully opened from idle with warmed up engine: about 0.6 V*
With throttle quickly closed: below 0.4 V*
(*: between SHO2SB1 terminal and SO2SGB1 terminal)

RED/BLU⁽¹⁾
PUR⁽²⁾

TPSB (THROTTLE POSITION (TP) SENSOR B)

Detects TP sensor B signal

With throttle fully open: about 4.1 V
With throttle fully closed: about 1.7 V

YEL/GRN⁽¹⁾
WHT⁽²⁾

IGPLS1 (No. 1 IGNITION COIL PULSE)

Drives No. 1 ignition coil

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

BLU/RED⁽¹⁾
PUR⁽²⁾

IGPLS2 (No. 2 IGNITION COIL PULSE)

Drives No. 2 ignition coil

GRN

IPB1 (IP CELL+BANK1)

Detects rear A/F sensor (Bank 1, sensor 1) pump cell

With engine running: about 2.0-5.6 V

GRN/RED⁽¹⁾
PUR⁽²⁾

IPB2 (IP CELL+BANK2)

Detects front A/F sensor (Bank 2, sensor 1) pump cell

With engine running: about 2.0-5.6 V

GRN⁽¹⁾
GRY⁽²⁾

SG5 (SENSOR GROUND)

Sensor ground

Less than 0.2 V at all times

GRN/WHT⁽¹⁾
BLU⁽²⁾

SG1 (SENSOR GROUND)

Sensor ground

Less than 0.2 V at all times

GRN/RED⁽¹⁾
PUR⁽²⁾

MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR)

Detects MAP sensor signal

With ignition switch ON (II): about 3.0 V
At idle: about 1.0 V (depending on engine speed)

YEL/RED⁽¹⁾
PNK⁽²⁾

VCC1 (SENSOR VOLTAGE)

Provides sensor reference voltage

With ignition switch ON (II): about 5.0 V

RED

NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR)

Detects input shaft (mainshaft) speed sensor signals

With ignition switch ON (II): about 0 V or about 5.0 V
With engine idling in N: about 2.5 V

BLU⁽¹⁾
TAN⁽²⁾

NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR)

Detects output shaft (countershaft) speed sensor signal

With ignition switch ON (II) and front wheels turned by hand: pulses

GRN/YEL⁽¹⁾
LT GRN⁽²⁾

VTS (ROCKER ARM OIL CONTROL SOLENOID)

Drives rocker arm oil control solenoid)

At idle: about 0 V

BLK

PG1 (POWER GROUND)

Ground circuit for PCM

Less than 0.2 V at all times

BRN/YEL⁽¹⁾
BRN⁽²⁾

LG2 (LOGIC GROUND)

Ground circuit for PCM

Less than 0.2 V at all times

BLK/GRN⁽¹⁾
GRY⁽²⁾

IG1 (IGNITION SIGNAL)

Detects ignition signal

With ignition switch ON (II): battery voltage

44⁽²⁾

PUR

SHD (SHIFT SOLENOID VALVE D)

Drives shift solenoid valve D

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

BLU

CKP (CRANKSHAFT POSITION (CKP) SENSOR)

Detects CKP sensor signal

With engine running: pulses

GRN⁽¹⁾
GRY⁽²⁾

CMP (CAMSHAFT POSITION (CMP) SENSOR)

Detects CMP sensor signal

With engine running: pulses

⁽¹⁾	'09-11 models

⁽²⁾

'12 model