Honda Civic. Manual — part 175

signal

Battery voltage

B16

BRN

ATP 2-1
(TRANSMISSION
RANGE SWITCH 2-
1)

Detects
transmission
range switch
2 position and
1 position
signal

In 2 and 1:
About 0 V
In any position
other than 2
and 1: Battery
voltage

B17

WHT/RED NM (INPUT SHAFT

(MAINSHAFT)
SPEED SENSOR)

Detects input
shaft
(mainshaft)
speed sensor
signal

With the
ignition switch
ON (II): About
0 V or about
5.0 V
With engine
idling in N:
About 2.5 V
(pulses)

B18

YEL/BLU VCC2 (SENSOR

VOLTAGE)

Provides
sensor
reference
voltage

With the
ignition switch
ON (II): About
5.0 V

B20

GRN

SH C (SHIFT
SOLENOID VALVE
C)

Drives shift
solenoid
valve C

With engine
running in R,
D3 (in 3rd
gear), and D
(in 3rd gear):
Battery voltage
With engine
running in P,
N, 2, D3 (in 1st
and 2nd gears),
and D (in 1st,
2nd, 4th, and
5th gears):
About 0 V

B21

YEL/GRN ATP D

Detects

In D: About 0

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

(TRANSMISSION
RANGE SWITCH D)

transmission
range switch
D position
signal

V
In any position
other than D:
Battery voltage

B22

YEL

ATP RVS
(TRANSMISSION
RANGE SWITCH
RVS)

Detects
transmission
range switch
R position
signal

In R: About 0
V
In any position
other than R:
Battery voltage

B25

BLU/WHT LS C (A/T CLUTCH

PRESSURE
CONTROL
SOLENOID VALVE
C)

Drives A/T
clutch
pressure
control
solenoid
valve C

With ignition
switch ON (II)
Current
controlled

B26

GRN/WHT SH B (SHIFT

SOLENOID VALVE
B)

Drives shift
solenoid
valve B

With engine
running in R,
1, D3 (in 1st
gear), and D
(in 1st gear)
Battery voltage
With engine
running in P,
N, 2, D3 (in
2nd and 3rd
gears), and D
(in 2nd, 3rd,
4th, and 5th
gears): About 0
V

B27

BRN/RED ATFT (ATF

TEMPERATURE
SENSOR)

Detects ATF
temperature
sensor signal

With igniting
switch ON (II):
0.2-4.8 V
(about 1.8 V at
operating

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

temperature)
(depending on
ATF
temperature)

B28

BLU/YEL ATP FWD

(TRANSMISSION
RANGE SWITCH
FWD)

Detects
transmission
range switch
D, D3, and 2
positions
signal

In D, D3, and
2: About 0 V
In any position
other than D,
D3, and 2:
Battery voltage

B29

WHT/BLK EGRP (EXHAUST

GAS
RECIRCULATION
(EGR) VALVE
POSITION SENSOR)

Detects EGR
valve position
sensor signal

With engine
running. 1.2-
3.0 V
(depending on
EGR valve lift)

B33

GRN/YEL SG2 (SENSOR

GROUND)

Sensor
ground

Less than 1.0 V
at all times

B35

WHT

LS A (A/T CLUTCH
PRESSURE
CONTROL
SOLENOID VALVE
A)

Drives A/T
clutch
pressure
control
solenoid
valve A

With ignition
switch ON (II):
Current
controlled

B36

BLK

PG1 (POWER
GROUND)

Ground
circuit for
PCM circuit

Less than 1.0 V
at all times

B37

BRN

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

Drives IMT
actuator

With ignition
switch ON (II).
Battery voltage

B38

WHT/BLK IMT - (INTAKE

MANIFOLD
TUNING (IMT)
ACTUATOR - SIDE)

Ground for
IMT actuator

With ignition
switch ON (II):
About 4.5 V
(between IMT

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

PCM CONNECTOR C o (44P)

CONNECTOR TERMINAL WIRE COLOR REFERENCE

+ terminal and
IMT -
terminal)

B39

WHT

IMTM (INTAKE
MANIFOLD
TUNING (IMT)
VALVE MONITOR)

Detects IMT
valve position

With ignition
switch ON (II):
About 0 V
With engine
speed about
5,200 rpm:
About 5.0 V

B44

BRN/WHT LS B (A/T CLUTCH

PRESSURE
CONTROL
SOLENOID VALVE
B)

Drives A/T
clutch
pressure
control
solenoid
valve B

With ignition
switch ON (II):
Current
controlled

NOTE:

Standard battery voltage is about 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

C11

GRN/RED MAP (MANIFOLD

ABSOLUTE
PRESSURE (MAP)
SENSOR)

Detects MAP
sensor signal

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

C13

YEL/RED VCC1 (SENSOR

Provides sensor With

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)