Mitsubishi Eclipse 1990 Service Manual page 603

INSPECTION PROCEDURE 31
Ignition switch-ST and park/neutral position
[Comment]
The ignition switch ST inputs a HIGH signal to the ECM while the engine is cranking.
The ECM controls fuel injection, etc. during starting based on this input.
The park/neutral position switch inputs the condition of the select lever, i.e. whether it is
in or range or in some other range, to the
The ECM controls the idle air control motor based on this input.
Check the park/neutral position switch. (Refer to GROUP
On-vehicle Service.)
Measure at the position switch connector
Disconnect the connector, and measure at the harness
side.
Voltage between 8 and ground
(Ignition switch: ON)
Voltage between 5 and ground
(Ignition switch: ON)
OK: Battery positive voltage
2. Continuity between 7 and ground
Engine (Turbo)>
Continuity between 8 and ground
OK: Continuity
3. Voltage between 8 and ground
Voltage between 5 and ground
Ignition switch: START
Disconnect ECM connector.
OK: Battery positive voltage
OK
ENGINE (TURBO)
AND ENGINE>
1. NG
2. NG
Engine (Turbo)>
Engine>
3. NG
Engine>
Engine
TSB Revision
system
Malfunction of
Improper connector contact, open circuit or
shortcircuited harness wire
Malfunction of the
Replace
OK
Check trouble symptom.
NG
NG
Check harness wire between
ECM and park/neutral
tion switch connector.
OK
Replace the ECM.
Check harness wire between park/neutral
and starter terminal. Repair, if necessary.
park/neutral position switch
and ignition switch connector.
OK
Check the ignition switch. (Refer to GROUP 54
switch
park/neutral switch
I , .
,
.
I
. ,
,
,
Switch.)