Mitsubishi 3000GT Service Manual page 480

ENGINE AND EMISSION CONTROL
8 Inspection of park/neutral position switch circuit <A/T>
DESCRIPTION OF OPERATION
The park/neutral position switch is interlocked with
the starter switch. When the gear selector lever
is placed in the "N" position during vehicle speed
control, a cancel signal is input to the control unit
TROUBLESHOOTING HINTS
ECU terminal voltage
Terminal
No.
1 Park/neutral position switch
Signal name
TSB Revision
which internally interrupts the power supply to the
vacuum pump assembly drive circuit for cancellation
of vehicle speed.
Condition
Park/neutral position switch in "N" or "P"
position
Park/neutral position switch in "II", 'Z", "L"
or "R" position
Terminal
voltage
0 V
Battery positive
voltage