Honda Civic Service Manual page 722

I
PCM CONNECTOR B {25P1 {cont'dl
Terminal Number Signal
Description
Measuring Conditions/Terminal Vohage
8 1 1
S H B
Shift control solenoid valve B
control
In 1st gear and 2nd gear in -q1, q11 position,
and in E] position: Battery voltage
In 3rd gear and 4th gear in lD.J, [Dr- position: 0 V
B't2
SLU Interlock control
When ignition switch is ON (ll), brake pedal
deoressed and accelerator Dedal released: 0 V
8 1 3
D4 IND D4 Indicator light control
When ignition switch is first turned ON (ll):
Battery voltage for two seconds
In E position: Baftery voltage
B't 4 N M S G
Mainshaft speed sensor ground Always: 0 V
E t c
N M
Mainshaft speed sensor signal
i n p u t
Depending on engine speed: Pulsing signal
When engine is stopped: 0 V
8 1 6
ATP R
Ay'T gear position switch E
position signal input
I n E p o s i t i o n : 0 V
In other than E position: Battery voltage
817
ATP 2
A/T gear position switch E posi-
tion signal input
I n E p o s i t i o n : 0 V
In orher than E position: Battery voltage
8 1 8 t o 8 2 1
Not used
s22
NCSG
Countershatt speed sensor ground
Alwaysr 0 V
B23
N C
Countershaft speed sensor signal
i n p u t
Depending on vehicle speed: Pulsing signal
When vehicle is stopped: 0 V
B24 ATP D4
Ay'T gear position switch lor posi-
tion signal input
I n E p o s i t i o n : 0 V
In other than 6 position: 5 V
ATP NP
A,/T gear position switch E and
N position signals input
I n E a n d E p o s i t i o n s :
0 V
In otherthan E and N] positions: Battery voltage
PCM CONNECTOR C {31P)
Terminal Number
Signal
Description
Measuring Conditions/Terminal Voltage
Cl to C6
- see section 11 -
c1
Service check signal
With ignition switch ON (ll) and service check
connector oDen; 5 V
With ignition switch ON (ll) and service check
connector connected with sDecial tool: 0 V
C8 to Cg
- see section 11 -
c 1 0
V B U
Back-up power system
Always battery voltage
C 1 1 t o C 3 1
- see section '11 -
PCM CONNECTOR D (16P}
Terminal Number
Signal
Description
Measuring Conditions/Terminal Voltage
Dl to D4
- see section 11 -
D5
STOP SW
Brake switch signal input
Brake pedal depressed: Battery voltage
Brake pedal released: 0 V
D 6 t o D 1 6
- see section 1 l -
14-43