FUEL SYSTEM
On-vehicle
of MPI
13-69
HARNESS INSPECTION
arness side
connector
Measure the power supply voltage of
the idle position switch.
l
Connector: Disconnected
l
Ignition switch: ON
Check for continuity of the ground
circuit.
l
Connector: Disconnected
SENSOR INSPECTION
sensor
STOP
Repair the
harness.
(1) With the accelerator pedal released, check to be sure that
the throttle valve lever or the fixed SAS is pushed.
NOTE
If it is not pushed, adjust the fixed SAS (Refer to
(2) Disconnect the throttle position sensor connector.
(3) Check the continuity across the throttle position sensor
connector terminal
(Sensor ground) and (Idle position
switch).
Accelerator pedal
Depressed
Released
Continuity
Non-conductive
Conductive (0
NOTE
If there is no continuity when the accelerator pedal is returned,
loosen the throttle-position sensor installation screw; then,
after turning all the way in the counterclockwise direction,
check again.
(4) Replace the throttle-position sensor (idling-position switch
incorporated) if there is a malfunction.
NOTE
For the idle position switch and throttle position sensor
adjusting procedure, refer to
TSB Revision
Summary of Contents for 3000GT 1991
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