FUEL SYSTEM
VALVE>
Inspection of
Components
VEHICLE SPEED SENSOR
Vehicle speed sensor
speed sensor
Component side
connector
Component side
connector
Engine control
module
Vehicle speed sensor
Engine control module connector
speed [km/h
(mph)]
1 6 2 4 5 1
OPERATION
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The vehicle-speed sensor is incorporated within
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
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The vehicle-speed sensor, by intermitting by the
reed switch the flow (to ground) of the
mately
voltage applied from the engine
module, produces vehicle-speed signals.
If ‘there is damaged or disconnected wiring, or
a
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
side connector
Engine control
module harness
Check the vehicle speed sensor out-
put circuit for continuity.
. Engine control module connector:
Disconnected
. Move the vehicle.
TSB Revision
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