Mitsubishi 3000GT Service Manual page 205

CLOSED THROTTLE POSITION SWITCH
(Closed throttle position
switch mounted)
Terminal voltage (V)
Throttle shaft turning angle o, zogl
OPERATION
The closed throttle position switch senses whether the accelerator pedal is depressed or not, converts
l
it into high/low voltage and inputs the voltage to the engine control module, which then controls
the idle air control motor based on the input signal.
The voltage in the engine control module is applied to the closed throttle position switch through
l
a resistor. When the accelerator pedal is released, the closed throttle position switch is turned on
to conduct the voltage to ground. This causes the closed throttle position switch terminal voltage
to go low from high.
TROUBLESHOOTING HINTS
If the closed throttle position switch harness and individual part check results are normal but the closed
throttle position switch output is abnormal, the following troubles are suspected.
(1) Poorly adjusted accelerator cable or auto-cruise control cable
(2) Poorly adjusted fixed SAS
INSPECTION
Using Scan Tool
Function
Data reading 26
MULTIPORT On-Vehicle Inspection of MFI
FUEL INJECTION - Components
A Harness side
connector
I
Data display
Check condition
Switch state Ignition switch:
(check by operating ac-
pedal repeated-
celerator
Engine control module
Closed
throttle
. . .
Throttle valve
ON At idle position
I
I
I
3 4
Normal indication
O N
OFF