Vehicle Speed Sensor - Mitsubishi 1989-1993 GALANT Service Manual

FUEL SYSTEM <SOHC-8 VALVE> -

VEHICLE SPEED SENSOR

Vehicle speed sensor
OPERATION
The vehicle-speed sensor is incorporated within
l
the speedometer; it converts vehicle-speed
data to pulse signals and inputs those signals to
the engine control module. The engine control
module, based upon those signals, regulates the
idle-speed control motor, etc.
TROUBLESHOOTING HINTS
If 'there is damaged or disconnected wiring, or
short-circuit, of the vehicle-speed sensor signal
circuit. the engine may stall when the vehicle speed
is reduced and the vehicle is stopped.
HARNESS INSPECTION
1 6 2 4 5 1
a
Engine control
Check the vehicle speed sensor out-
module harness
put circuit for continuity.
side connector
. Engine control module connector:
Disconnected
. Move the vehicle.
Component side
Component side
Engine control module connector
The vehicle-speed sensor, by intermitting by the
l
reed switch the flow (to ground) of the approxi-
mately 5V voltage applied from the engine con-
Engine control
module
Vehicle speed sensor