Acura RL (1996-2004 year). Manual - part 219

203-40

2004 American Honda Motor Co., Inc.

Connector to Harness Index

OnStar System Sub-harness (’02-’04 USA)

Connector

or Terminal

Cavities/

Color

Location

Connects to

Notes

C638

24-LT BLU

Behind right side of rear seat

Right side wire harness

C902

12-BLK

Behind right side of rear seat

OnStar system interface unit

C903

16-BLK

Behind right side of rear seat

OnStar system interface unit

C904

32-BLU

Behind right side of rear seat

OnStar control unit

C905

32-RED

Behind right side of rear seat

OnStar control unit

C906

25-BLK

Behind right side of rear seat

OnStar system radio frequency modulator

unit

ONSTAR SYSTEM
SUB-HARNESS

C902

C903

C638

C905

C904

C906

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205

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

1

2

14

15

3

16

4

17

5

18

6

19

7

20

8

21

9

22

10

23

11

24

12

25

13

26

PCM Connector A (26P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

1

BRN

INJ1 (No. 1 FUEL INJECTOR)

Drives No.. 1 fuel injector.

With engine running: duty controlled

2

RED

INJ2 (No. 2 FUEL INJECTOR)

Drives No.. 2 fuel injector.

With engine running: duty controlled

3

BLU

INJ3 (No. 3 FUEL INJECTOR)

Drives No.. 3 fuel injector.

With engine running: duty controlled

4

YEL/GRN

FLR1 (FUEL PUMP RELAY)

Drives fuel pump relay.

0 V for two seconds after turning ignition
switch ON (II), then battery voltage

5

BLK/BLU

IACV (IDLE AIR CONTROL
VALVE)

Drives IAC valve.

With engine running: duty controlled

6

RED

ES (EGR CONTROL
SOLENOID VALVE)

Drives EGR control solenoid
valve.

With EGR operating during driving with fully
warmed up engine: duty controlled
With EGR not operating: battery voltage

7

LT GRN/

RED

MIL (MALFUNCTION
INDICATOR LAMP)

Drives MIL.

With MIL turned ON: 0 V
With MIL turned OFF: battery voltage

8

RED/WHT

ACC (A/C CLUTCH RELAY)

Drives A/C clutch relay.

With compressor ON: 0 V
With compressor OFF: battery voltage

10

RED/GRN

FP RCS (FUEL PRESSURE
REGULATOR CONTROL
SOLENOID VALVE)

Drives fuel pressure regulator
control solenoid valve.

Within a few minutes after restart with high
ECT: 0 V

11

PNK

IGN COIL1 (No. 1 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulse.

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

12

BLK

PG1 (POWER GROUND)

Ground for the PCM power
circuit.

Less than 1.0 V at all times

13

YEL/BLK

IGP1 (POWER SOURCE)

Power source for the PCM
control circuit.

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

14

YEL

INJ4 (No. 4 FUEL INJECTOR)

Drives No. 4 fuel injector.

With engine running: duty controlled

15

BLK/RED

INJ5 (No. 5 FUEL INJECTOR)

Drives No. 5 fuel injector.

With engine running: duty controlled

*: ’96-’99 models

*1: ’00-’02 models

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205-1

E

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

1

2

14

15

3

16

4

17

5

18

6

19

7

20

8

21

9

22

10

23

11

24

12

25

13

26

PCM Connector A (26P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

16

WHT/BLU

INJ6 (No. 6 FUEL INJECTOR)

Drives No. 6 fuel injector.

With engine running: duty controlled

17

LT GRN

MCS (ENGINE MOUNT
CONTROL SOLENOID VALVE)

Drives engine mount control
solenoid valve.

At idle: 0 V
Above idle: battery voltage

18

GRN/RED

LPO2SHTC (LEFT PRIMARY
HEATED OXYGEN SENSOR
HEATER CONTROL)

Drives left primary heated
oxygen sensor heater.

With ignition switch ON (II): battery voltage
With fully warmed up engine running: 0 V

19

BLK/WHT

RPO2SHTC (RIGHT PRIMARY
HEATED OXYGEN SENSOR
HEATER CONTROL)

Drives right primary heated
oxygen sensor heater.

With ignition switch ON (II): battery voltage
With fully warmed up engine running: 0 V

20

RED/BLU

IABCS1 (IAB LOW CONTROL
SOLENOID VALVE)

Drives IAB low control solenoid
valve.

With engine speed below 3,200 rpm: 0 V
With engine speed above 3,200 rpm: battery
voltage

21

BLK/WHT

SO2SHTC (SECONDARY
HEATED OXYGEN SENSOR
HEATER CONTROL)

Drives secondary heated oxygen
sensor heater.

With ignition switch ON (II): battery voltage
With fully warmed up engine running: pulses

22

YEL

IABCS2 (IAB HIGH CONTROL
SOLENOID VALVE)

Drives IAB high control solenoid
valve.

With engine speed below 3,800 rpm: 0 V
With engine speed above 3,800 rpm: battery
voltage

23

RED/YEL

PCS (EVAP PURGE
CONTROL SOLENOID
VALVE)

Drives EVAP purge control
solenoid valve.

With engine running, engine coolant below
99

_

F (37

_

C)*, 140

_

F (60

_

C)*

1

: battery

voltage
With engine running, engine coolant above
99

_

F (37

_

C)*, 140

_

F (60

_

C)*

1

 : 0 V

24

BRN

IGN COIL 2 (No 2 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulses.

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

25

BLK

PG2 (POWER GROUND)

Ground for the PCM power circuit.

Less than 1.0 V at all times

26

BRN/BLK

LG1 (LOGIC GROUND)

Ground for the PCM control circuit.

Less than 1.0 V at all times

*: ’96-’99 models

*1: ’00-’02 models

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205-2

2004 American Honda Motor Co., Inc.

Engine/Powertrain Control Module Terminal Arrangement

wire side of female terminals

1

4

5

6

10

12

3

2

11

13

16

7

15

14

9

8

PCM Connector B (16P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

1

YEL/BLK

IGP2 (POWER SOURCE)

Power source for the PCM
control circuit.

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

2

RED

IGN COIL6 (No. 6 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulse.

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

3

GRN

PSPSW (P/S OIL PRESSURE
SWITCH)

Detects PSP switch signal.

At idle with steering wheel in straight ahead
position: 0 V
At idle, with steering wheel at full lock:
approx. 6 V

4*

YEL/GRN

MTRTW

Sends ECT signal to ECT
gauge.

With ignition switch ON (II): duty controlled

5

YEL/RED

CYP 2P
CMP (CYP) 2P (’04)
(CYP SENSOR 2P SIDE)

Detects CYP sensor 2.

With engine running: pulses

6

YEL

CYP 1P
CMP (CYP) 1P (’04)
(CYP SENSOR 1P SIDE)

Detects CYP sensor 1.

7

BLU/RED

CKP 2P
(CKP SENSOR 2P SIDE)

Detects CKP sensor 2

8

BLU

CKP 1P
(CKP SENSOR 1P SIDE)

Detects CKP sensor 1.

9

BRN/BLK

LG2 (LOGIC GROUND)

Ground for the PCM control
circuit.

Less than 1.0 V at all times

10

GRY

IGN COIL 5 (No. 5 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulse.

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

11

GRN

IGN COIL 4 (No. 4 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulse.

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

12

BLU

IGN COIL3 (No. 3 IGNITION
COIL, part of IGNITION
CONTROL MODULE)

Sends ignition pulse.

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

13

BLU/WHT

VSS
(VEHICLE SPEED SENSOR)

Detects VSS signal.

With ignition switch ON (II) and front wheels
rotating: cycles 0 – 5 V

15

WHT/RED

CKP 2M
(CKP SENSOR 2M SIDE)

Ground for CKP sensor 2.

16

WHT

CKP 1M
(CKP SENSOR 1M SIDE)

Ground for CKP sensor 1.

*: ’03-’04

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