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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