Acura RL. Manual - part 513

7

PNK

FPC (FUEL PUMP 
CONTROL)

Detects fuel pump 
control signal

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

8

LT GRN

BKSW (BRAKE 
PEDAL POSITION 
SWITCH)

Detects brake pedal 
position switch 
signal

With brake pedal 
released: about 0 V
With brake pedal 
pressed: battery 
voltage

9

BRN

BKSWNC (BRAKE 
PEDAL POSITION 
SWITCH)

Detects brake pedal 
position switch 
signal

With ignition 
switch ON (II) and 
brake pedal 
released: battery 
voltage 
With ignition 
switch ON (II) and 
brake pedal 
pressed: about 0 V

10

LT GRN

VSV 
(EVAPORATIVE 
EMISSION (EVAP) 
CANISTER VENT 
SHUT VALVE)

Drives EVAP 
canister vent shut 
valve

With ignition 
switch ON (II): 
battery voltage

11

BRN

VSSOUT (VEHICLE 
SPEED SENSOR 
OUTPUT SIGNAL)

Sends vehicle speed 
sensor signal

Depending on 
vehicle speed: 
pulses

12

GRY

VCC4 (SENSOR 
VOLTAGE)

Provides sensor 
voltage

With ignition 
switch ON (II): 
about 5.0 V 
With ignition 
switch OFF: about 
0 V

13

GRN

SDN (DOWNSHIFT 
SWITCH)

Detects paddle 
shifter - (downshift 
switch) signal

In M position and 
shift lever pushed 
toward downshift 
position: about 0 V
In M position and 
shift lever in N 
position: battery 
voltage

14

RED

K-LINE

Sends and receives 
HDS signal

With ignition 
switch ON (II): 
pulses or battery 
voltage

15

WHT

CANH (CAN 
COMMUNICATION 
SIGNAL HIGH)

Sends 
communication 
signal

With ignition 
switch ON (II): 
pulses

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 47 

© 2005 Mitchell Repair Information Company, LLC. 

PCM INPUTS AND OUTPUTS AT CONNECTOR E (31P)

Fig. 26: Identifying PCM Inputs And Outputs Connector Terminals E (31P) 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

CONNECTOR TERMINAL DESCRIPTION CHART 

NOTE:

Standard battery voltage is about 12 V.

Terminal number

Wire color

Terminal name

Description

Signal

16

BRN

SCS (SERVICE 
CHECK SIGNAL)

Detects service 
check signal

With the service 
check signal 
shorted with the 
HDS: about 0 V 
With the service 
check signal 
opened: about 5.0 
V

17

PNK

PSPSW (POWER 
STEERING 
PRESSURE 
SWITCH SIGNAL)

Detects PSP switch 
signal

At idle with 
steering wheel in 
straight ahead 
position: about 0 V
At idle with 
steering wheel at 
full lock: battery 
voltage

18

ORN

ELD (ELECTRICAL 
LOAD DETECTOR 
(ELD))

Detects ELD signal With ignition 

switch ON (II): 
about 0.1-4.8 V 
(depending on 
electrical load)

19

BLU

SUP (UPSHIFT 
SWITCH)

Detects paddle 
shifter + (upshift 
switch) signal

In M position and 
shift lever pushed 
toward upshift 
position: about 0 V
In M position and 
shift lever in N 
position: battery 
voltage

20

LTBLU

FPCD (FUEL PUMP  Detect fuel pump 

With ignition 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 48 

© 2005 Mitchell Repair Information Company, LLC. 

PGM-FI SYSTEM 

The programmed fuel injection (PGM-FI) system is a sequential multiport fuel injection system. 

Air Conditioning (A/C) Compressor Clutch Relay 

CONTROL 
MODULE 
DIAGNOSIS)

control diagnosis

switch ON (II): 
about 0 V 
At idle: about 10.0 
V

21

LT GRN

STRLY (STARTER 
CUT RELAY)

Drives starter cut 
relay 2 (ST CUT)

With ignition 
switch ON (II): 
about 0 V

22

PNK

SLS (SHIFT LOCK 
SOLENOID)

Drives shift lock 
solenoid

With ignition 
switch ON (II), in 
P position, brake 
pedal pressed, and 
accelerator 
released: about 0 V

23

PNK

NEP (ENGINE 
SPEED PULSE)

Outputs engine 
speed pulse

With engine 
running: pulses

24

RED

WEN (WRITE 
ENABLE SIGNAL)

Detects write enable 
signal

With ignition 
switch ON (II): 
about 0 V

25

ORN

IMOCD 
(IMMOBILIZER 
CODE)

Detects immobilizer 
signal

 

26

BLK

CANL (CAN 
COMMUNICATION 
SIGNAL LOW)

Sends 
communication 
signal

With ignition 
switch ON (II): 
pulses

27

RED

ACC (A/C 
COMPRESSOR 
CLUTCH RELAY)

Drives A/C 
compressor clutch 
relay

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

29

LTGRN

FTP (FUEL TANK 
PRESSURE (FTP) 
SENSOR)

Detects FTP sensor 
signal

With ignition 
switch ON (II) and 
fuel fill cap 
removed: about 2.5 
V

30

PUR

SMODE 
(SEQUENTIAL 
SPORT SHIFT 
MODE)

Detects sequential 
sport shift mode 
switch signal

In M position: 
about 0 V 
In any position 
other than M: 
battery voltage

31

GRN

METINH (METER 
DISPLAY INHIBIT 
SIGNAL)

Sends inhibit signal With ignition 

switch ON (II): 
about 10.0 V

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 49 

© 2005 Mitchell Repair Information Company, LLC. 

When the PCM receives a demand for cooling from the A/C system, it delays the compressor from being 
energized, and enriches the mixture to assure smooth transition to the A/C mode. 

Air Fuel Ratio (A/F) Sensor 

The A/F sensor operates over a wide air/fuel range. The A/F sensor is installed upstream of the WU-TWC, 
and sends signals to the PCM which varies the duration of fuel injection accordingly. 

Fig. 27: Identifying Air Fuel Ratio (A/F) Sensor 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Barometric Pressure (BARO) Sensor 

The BARO sensor is inside the PCM. It converts atmospheric pressure into a voltage signal that modifies the 
basic duration of the fuel injection discharge. 

Camshaft Position (CMP) Sensor 

The CMP sensor input is used by the PCM to determine ignition timing at start up (cranking) and when 
crank angle is abnormal. 

Fig. 28: Identifying Terminal And Magnet Of Camshaft Position Sensor 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Crankshaft Position (CKP) Sensor 

The CKP sensor detects crankshaft speed and is used by the PCM to determine ignition timing and timing 
for fuel injection of each cylinder as well as detecting engine misfire.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE Fuel and Emissions Systems - RL

  

me 

 

Friday, June 05, 2009 2:33:27 PM

Page 50 

© 2005 Mitchell Repair Information Company, LLC.