Mitsubishi 1989-1993 GALANT Service Manual page 200

FUEL SYSTEM <SOHC-8 VALVE> -
TROUBLESHOOTING HINTS
Hint 1:
The signals of the throttle-position sensor are more
important for control of the automatic transaxle than
for control of the engine; shifting "impact shocks"
are produced if there is a
throttle-position sensor.
INSPECTION
Using Scan tool
Function
Data reading 14
HARNESS INSPECTION
connector
connector
Harness side
connector
of the
m a l f u n c t i o n
Sensor vol-
Ignition switch: ON held
tage for 15 sec. or more
Measure the power supply voltage of
the throttle position sensor.
. Connector:' Disconnected
q
. Ignition switch: ON
0
Check for continuity of the ground
circuit.
Connector:
Check for an open-circuit, or a short-
circuit to ground, between the engine
control module and the throttle posi-
. Throttle position sensor connector:
Engine control module connector:
Disconnected
TSB Revision
Hint 2:
If the voltage of the throttle-position sensor deviates
from the standard value, check once again after
making the throttle-position sensor adjustment.
Disconnected
Repair the
harness.
Repair the
harness.