Mitsubishi 3000GT Service Manual page 259

HARNESS INSPECTION
A Harness side
connector
Engine control
2
A Harness side
side connector r:i
connector
On-Vehicle Inspection of MFI
FUEL INJECTION - ComDonents
Measure the power supply volt-
aae of idle air control ,motor.
l Idle air control motor connec-
tor: Disconnected
l Ignition switch: ON
Battery voltage
7
Check for an open-circuit, or a
harness
short-circuit to around between
the engine contr;l module andthe
idle air control motor.
l
Idle air control motor connec-
l
tor: Disconnected
Checking the Operation Sound
(1) Check that the operation sound of the stepper motor
can be heard after the ignition is switched ON (but without
starting the motor).
(2) If the operation sound cannot be heard, check the stepper
motor's activation circuit.
If the circuit is normal, it is probable that there is a
malfunction of the stepper motor or of the engine control
module.
TSB Revision
INSPECTION
Repair the
Repair the
harness.
(Al -4)