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Acura RL (1996-2004 year). Manual - part 220

205-3

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

PCM Connector C (12P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

PNK

ACS (A/C SWITCH SIGNAL)

Detects A/C switch signal.

With A/C switch ON: 0 V
With A/C switch OFF: approx. 10 V

GRN/RED

PDSW
(A/C PRESSURE SWITCH)

Detects A/C pressure switch
signal.

With A/C pressure switch ON: 0 V
With A/C pressure switch OFF: approx. 5 V

GRN

FLR2 (FUEL PUMP RELAY 2)

Drives fuel pump relay.

With engine at low rpm: battery voltage
With engine at high rpm: 0 V

RED

SCS
(SERVICE CHECK SIGNAL)

Detects service check connector
signal (the signal causing a DTC
indication)

With the connector connected: 0 V
With the connector disconnected: about 5 V
or battery voltage

BLU/RED

STS
(STARTER SWITCH SIGNAL)

Detects starter switch signal.

With starter switch ON: battery voltage
With starter switch OFF: 0 V

BLU

NEP
(ENGINE SPEED PULSE)

Outputs engine speed pulse.

With engine running: pulses

LT GRN/

RED

TCINH (TRACTION
CONTROL INHIBIT)

→

TCS, TCS operation

permission signal.

10*,*

BLK/ORN

TCFC (TRACTION CONTROL
FUEL CUT)

TCS (VSA)*

→

FI, fuel cut

(torque down) signal.

WHT

IMO CODE
(IMMOBILIZER CODE)

Detects immobilizer signal.

12*, *

PNK/BLK

TCSTB (TRACTION
CONTROL STANDBY)

TCS (VSA)*

→

FI, TCS (VSA)

operation start signal.

With TCS/VSA OFF: approx. 5 V
With TCS/VSA ON: 0 V

*: with TCS

*1: with VSA

Circuit Index

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205-4

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

PCM Connector D (22P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

WHT/YEL

VBU (VOLTAGE BACKUP)

Power source for the PCM
control circuit and the DTC
memory.

Battery voltage at all times

RED/BLU

KSR (RIGHT KNOCK
SENSOR (BANK 1))

Detects knock sensor signal.

With engine knocking: pulses

GRN/ORN

BARO OUT (BAROMETRIC
SENSOR OUTPUT SIGNAL)

Sends barometric sensor output
signal.

With ignition switch ON (II): about 3 V
(depending on barometric pressure)

LT GRN

K-LINE

Sends and received OBD II scan
and PGM Tester signal.

With ignition switch ON (II): battery voltage

WHT/RED

ALTF
(ALTERNATOR FR SIGNAL)

Detects alternator FR signal.

With fully warmed up engine running: 0–5 V
(depending on electrical load)

RED/BLK

TPS (THROTTLE
POSITION SENSOR)

Detects TP sensor signal.

With throttle fully open: approx. 4.5 V
With throttle fully closed: about 0.5 V

RED/WHT

ECT (ENGINE COOLANT
TEMPERATURE SENSOR)

Detects ECT sensor signal.

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

RED/YEL

IAT (INTAKE AIR
TEMPERATURE SENSOR)

Detects IAT sensor signal.

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

RED/GRN

MAP (MANIFOLD ABSOLUTE
PRESSURE SENSOR)

Detects MAP sensor signal.

With ignition switch ON (II): about 3 V
At idle: about 1.0 V (depending on engine
speed)

YEL/RED

VCC1 (SENSOR VOLTAGE)

Power source for MAP sensor.

With ignition switch ON (II): about 5 V
With ignition switch OFF: 0 V

GRN/WHT

SG1 (SENSOR GROUND)

Ground for the MAP sensor.

*: with TCS

Circuit Index

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205-5

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

PCM Connector D (22P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

BLK

CYP 1M
(CYP SENSOR 1M SIDE)

Ground for CYP sensor 1.

YEL

KSL (LEFT KNOCK SENSOR
(BANK 2))

Detects knock sensor signal.

With engine knocking: pulses

BLK/RED

CYP 2M
(CYP SENSOR 2M SIDE)

Ground for CYP sensor 2.

GRN/YEL

PTANK (FUEL TANK
PRESSURE SENSOR)

Detects fuel tank pressure
sensor.

With fuel fill cap opened: about 2.5 V

WHT/BLK

EGRL
(EGR VALVE LIFT SENSOR)

Detects EGR valve lift sensor
signal.

At idle without vacuum: about 1.2 V
With 27 kPa (200 mmHg, 8 in.Hg): about
4.3 V

BLU/RED

LPHO2S
(LEFT PRIMARY OXYGEN
SENSOR, SENSOR 1)

Detects primary oxygen sensor
(sensor 1) signal.

With throttle fully opened, fully warmed up
engine: above 0.6 V
With throttle quickly closed: below 0.4 V

WHT

RPHO2S
(RIGHT PRIMARY OXYGEN
SENSOR, SENSOR 1)

Detects primary oxygen sensor
(sensor 1) signal.

With throttle fully opened, fully warmed up
engine: above 0.6 V
With throttle quickly closed: below 0.4 V

20*

BLU/WHT

VREF
(REFERENCE VOLTAGE)

Provides reference voltage to
TCS control unit (VSA converter
unit)*

With ignition switch ON (II): about 5 V
With ignition switch OFF: 0 V

YEL/BLU

VCC2 (SENSOR VOLTAGE)

Provides sensor voltage.

With ignition switch ON (II): about 5 V
With ignition switch OFF: 0 V

GRN/BLK

SG2 (SENSOR GROUND)

Sensor ground.

*1: with VSA

Circuit Index

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205-6

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

PCM Connector E (26P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

BLK/YEL

VS SOL (BATTERY VOLTAGE
FOR SOLENOID VALVE)

Power source for solenoid
valves.

With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V

GRN/WHT

BKSW (BRAKE SWITCH)

Detects brake switch signal.

With brake pedal released: 0 V
With brake pedal depressed: battery voltage

RED

LS+ (LINEAR SOLENOID
VALVE +)

Drives linear solenoid valve.

With ignition switch ON (II): duty controlled

RED

NM (MAINSHAFT SPEED
SENSOR)

Detects mainshaft speed sensor
signal

With engine running: pulses

BLU

NC (COUNTERSHAFT
SPEED SENSOR)

Detects countershaft speed
sensor signal.

With ignition switch ON (II) and front wheels
turning: pulses

PNK/BLU

TCSFT
(TCS SHIFT CONTROL)

Sends TCS shift control signal.

With engine running: pulses

WHT

ATPR (A/T GEAR
POSITION SWITCH)