Acura RL. Manual - part 510

PCM INPUTS AND OUTPUTS AT CONNECTOR A (31P) 

Fig. 19: Identifying PCM Inputs And Outputs Connector Terminals A (31P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

CONNECTOR TERMINAL DESCRIPTION CHART 

1)

10

BLK/YEL

VBSOL (POWER 
SOURCE FOR 
SOLENOID 
VALVES)

Power source for 
solenoid valves

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

11

WHT/BLU

ALTL 
(ALTERNATOR L 
SIGNAL)

Detects alternator L 
signal

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

12

WHT/RED

ALTF 
(ALTERNATOR FR 
SIGNAL)

Detects alternator 
FR signal

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

13

LTBLU

RFC RLY 
(RADIATOR FAN 
RELAY)

Drives radiator fan 
control (RFC) unit 
relay

With radiator fan 
motor ON: about 0 
V 
With radiator fan 
motor OFF: battery 
voltage

14

RED/WHT

ECT1 (ENGINE 
COOLANT 
TEMPERATURE 
(ECT) SENSOR 1)

Detects ECT sensor 
1 signal

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

NOTE:

Standard battery voltage is about 12 V.

Terminal number

Wire color

Terminal name

Description

Signal

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 35 

© 2005 Mitchell Repair Information Company, LLC. 

15

BRN/WHT

IGPL S6 (No. 6 
IGNITION COIL 
PULSE)

Drives No. 6 
ignition coil

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

16

BLK/RED

IGPL S5 (No. 5 
IGNITION COIL 
PULSE)

Drives No. 5 
ignition coil

17

BRN

IGPL S4 (No. 4 
IGNITION COIL 
PULSE)

Drives No. 4 
ignition coil

18

WHT/BLU

IGPL S3 (No. 3 
IGNITION COIL 
PULSE)

Drives No. 3 
ignition coil

19

BLU/RED

IGPL S2 (No. 2 
IGNITION COIL 
PULSE)

Drives No. 2 
ignition coil

20

YEL/GRN

IGPL S1 (No. 1 
IGNITION COIL 
PULSE)

Drives No. 1 
ignition coil

21

BRN

INJ1 (No. 1 
INJECTOR)

Drives No. 1 
injector

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

22

GRN/YEL

VTS (ROCKER 
ARM OIL 
CONTROL 
SOLENOID (VTEC 
SOLENOID 
VALVE))

Drives rocker arm 
oil control solenoid 
(VTEC solenoid 
valve)

At idle: about 0 V

23

BLU/BLK

VTPSW (ROCKER 
ARM OIL 
PRESSURE 
SWITCH (VTEC 
OIL PRESSURE 
SWITCH))

Detects rocker arm 
oil pressure switch 
(VTEC oil pressure 
switch) signal

With engine at low 
speed: about 0 V 
With engine at high 
speed: battery 
voltage

24

WHT/GRN

ALTC 
(ALTERNATOR 
CONTROL)

Sends alternator 
control signal

With fully warmed 
up engine running: 
battery voltage 
(depending on 
electrical load)

25

GRN

SEFD (THROTTLE 
ACTUATOR 
CONTROL SERIAL 
SIGNAL)

Sends throttle 
actuator control 
serial signal

 

26

BLU

SEDF (THROTTLE 
ACTUATOR 
CONTROL SERIAL 
SIGNAL)

Detects throttle 
actuator control 
serial signal

 

27

WHT/BLU

INJ6 (No. 6 

Drives No. 6 

At idle: duty 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 36 

© 2005 Mitchell Repair Information Company, LLC. 

PCM INPUTS AND OUTPUTS AT CONNECTOR B (24P) 

Fig. 20: Identifying PCM Inputs And Outputs Connector Terminals B (24P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

CONNECTOR TERMINAL DESCRIPTION CHART 

INJECTOR)

injector

controlled 
With ignition 
switch ON (II): 
battery voltage

28

BLK/RED

INJ5 (No. 5 
INJECTOR)

Drives No. 5 
injector

29

YEL

INJ4 (No. 4 
INJECTOR)

Drives No. 4 
injector

30

BLU

INJ3 (No. 3 
INJECTOR)

Drives No. 3 
injector

31

RED

INJ2 (No. 2 
INJECTOR)

Drives No. 2 
injector

NOTE:

Standard battery voltage is about 12 V.

Terminal number

Wire color

Terminal name

Description

Signal

1

BLU/RED

CKPB 
(CRANKSHAFT 
POSITION (CKP) 
SENSOR B)

Drives CKP sensor 
B signal

With engine 
running: pulses

2

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

3

WHT/RED

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

Ground for IMT 
actuator

With ignition 
switch ON (II): 
battery voltage

4

WHT/BLU

IMT+ (INTAKE 

Drives IMT 

With ignition 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 37 

© 2005 Mitchell Repair Information Company, LLC. 

PCM INPUTS AND OUTPUTS AT CONNECTOR B (24P) 

Fig. 21: Identifying PCM Inputs And Outputs Connector Terminals B (24P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

MANIFOLD 
TUNING (IMT) 
ACTUATOR 
+SIDE)

actuator

switch ON (II): 
battery voltage

5

BLU/RED

EGR (EXHAUST 
GAS 
RECIRCULATION
(EGR) VALVE)

Drives EGR valve With EGR 

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

6

RED/BLU

KS (KNOCK 
SENSOR)

Detects knock 
sensor signal

With engine 
knocking: pulses

7

BLU/YEL

MCS (ENGINE 
MOUNT CONTROL 
SOLENOID 
VALVE)

Drives engine 
mount control 
solenoid valve

At idle: about 0 V
Above idle: battery 
voltage

8

YEL

CMP (CAMSHAFT 
POSITION (CMP) 
SENSOR)

Detects CMP 
sensor signal

With engine 
running: pulses

9

GRN

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

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

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

11

WHT/BLK

IMTM (INTAKE 
MANIFOLD 
TUNING (IMT) 
ACTUATOR 
MONITOR)

Detects IMT 
actuator position

With engine 
running: about 5.0 
V 
With engine speed 
above 3,800 rpm: 
about 0 V

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 38 

© 2005 Mitchell Repair Information Company, LLC.