Mitsubishi 3000GT 1991 Service Manual page 181

FUEL SYSTEM
IGNITION SWITCH-ST <M/T>
Enaine control unit connector
OPERATION
The ignition switch-ST inputs a high signal to the engine control unit while the engine is cranking. The
l
engine control unit provides fuel injection control, etc., at engine startup based on this signal.
When the ignition switch is set to START, the battery voltage at cranking is applied through the ignition
l
switch to the engine control unit, which detects that the engine is cranking.
INSPECTION
Using Multi-use
Tester
No. Data display
Function Item
Data reading
HARNESS INSPECTION
1
Engine control
2
side connector
Check condition
Ignition switch: ON
Switch state
Measure the input voltage
engine control
Engine control unit connector:
l
Disconnected
Ignition switch:
l
L
Check for continuity of the ground
circuit.
Engine control unit connector:
l
Disconnected
TSB Revision
I
Engine control unit
Engine
stop
Cranking
to the
unit.
START
1
FU0638
Normal indication
OFF
ON
Repair the
harness.