Acura Integra 1998 Service Manual page 466

Terminal Number
Signal Description
Maasuring Conditlons/Tarminal Voliage
424
ACCL
Air conditioning (Ay'C) clutch relay
control
With A,/C comDressor ON: 0 V
With Ay'C compressor OFF: Battery voltage
A25 t G 1
Power supply system
With ignition switch ON (ll)r 12 V
426 L G 1
Ground
B1
Not used
8 2 BAROS S Barometric pressure sensor signal
input
With ignition switch ON (ll) and depending on
barometric pressure: Approx. 3 V
B3
ECT
Engine coolant temperature sen-
sor signal input
With ignition switch ON (ll) and depending on
engine coolant tem perature: Approx. 0.1 - 4.8 V
B4
TPS Throttle position sensor signal
input
With ignition switch ON (ll) 8nd throttle fully
open: 4.14 - 4.82 V
With ignition switch ON (ll) and throttle fully
closed: 0.44 - 0.56 V
B 5
VSS Vehicle speed sensor signal input With ignition switch ON (ll) and front wheels
rotating; Pulsing signal
B6
AFSB Upshifvdownshift comparative
signal output
With engine idling: 0 V
At uDshift or downshift: 5 V for an instant
B7
AFSA
Upshifvdownshift com parative
srgnal output
With engine idling: 0 V
At upshift or downshift: 5 V for an instant
B8
NCSG
Countershaft speed sensor signal
ground
Always: 0 V
B9
NC Countershaft speed sensor signal
Input
Depending on vehicle speed: Pulsing signal
When vehicle is stopped:0 V
B 1 0 NM Mainshaft speed sensor signal
input
Depending on vehicle speed: Pulsing signal
When vehicle is stoDoed: 0 V
8 1 1
Not used
812 STOP SW
Brake switch signal input With ignition switch ON {ll) and b.ake pedal
depressed: Battery voltage
With ignition switch ON (lll and brake pedal
released:0 V
8 1 3
Not used
8 1 4
scs
Timing adjustment
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 special tool: 0 V
8 1 5
Not used
8 1 6
Not used
817
N M S G Mainshaft speed sensor signal
ground
Always: 0 V
8 1 8 Not used
8 1 9 FAS
Shift acknowledge input With engine idling: 5 V
At upshift or downshift: 0 V for an instant
820
VBEF
+5 V reference
With ignition switch ON {lll: Approx. 5 V
82'l Not used
Not used
14-49