Mitsubishi 1989-1993 GALANT Service Manual page 452

FUEL SYSTEM
OPERATION
The turbocharger waste gate solenoid is an ON-
l
OFF type solenoid valve and controls the leaking
of overboost pressure that is fed to the turbo-
charger waste gate actuator.
Battery power is supplied to the turbocharger
l
waste gate solenoid via the multiport fuel injec-
TROUBLESHOOTING HINTS
Since the results of the inspection of the turbo-
charger waste gate solenoid harness and single
parts are normal, the following troubles can be in-
ferred if there is some trouble such as poor accele-
ration, etc.
(1) Malfunction of the overboost pressure control
INSPECTION
Using Scan tool
Function Item No.
Actuator test 12
HARNESS INSPECTION
Harness side
connector
I
ACTUATOR INSPECTION
Refer to GROUP 15.
Description
Measure the power supply voltage.
Check for an open-circuit, or short-
circuit to around, between the turbn-
Engine
charger w'aste g&e solenoid and thk
control
module
engine control module.
harness
side
connector: Disconnected
connector
105
tor: Disconnected
TSB Revision
turns on the power transistor inside
current flows to the coil and some overboost
pressure that is fed to the turbocharger waste
gate solenoid leaks out.
system
(2) Poor intake air hose connection
(3) Malfunction of turbo charger, turbocharger
waste gate solenoid
(4) Clogging of exhaust gas system
Inspection conditions
ignition switch: ON
module
the unit,
Normal condition
Operating sound is
heard when driven.
Repair the
harness.