Mitsubishi MOTORS Space Runner 1998, Workshop Manual

Page: 313 / 1164

GDI <4G9> -
Troubleshooting
13B-71
Terminal
No.
Normal condition Check condition (Engine condition) Check item
38 Engine control relay Ignition switch: OFF 0 - 3 V
Ignition switch: ON System voltage
42 Brake vacuum sensor When the engine is running at idle,
stop the engine, and then turn the
ignition switch to ON and depress the
brake pedal several times.
Voltage increases
45 A/C switch 1 Engine: Idling A/C switch: OFF 0 - 3 V
A/C switch: ON
(Compressor is
operating)
System voltage
51 Injector open circuit check
signal
Engine: Increase engine speed from
idle speed to 4,000 r/min.
Decreases slightly
(approx.0.7 V) from 4.5 V -
5.0 V.
52 Small lamp switch Engine: Idling Lighting switch:
OFF
0 - 3 V
Lighting switch:
ON
System voltage
57 Purge control solenoid valve Engine coolant Engine: Stopped System voltage
temperature:
80 - 95 _ C
Ignition switch:
ON
Engine: Start the
engine, and then
increase engine
speed to 3,500
r/min.
Voltage decreases.
58 Tachometer Engine: 3,000 r/min 0.3 - 3.0 V
60 Oxygen sensor heater Engine: Idling 0 - 3 V
control
Engine: 5,000 r/min System voltage
76 Oxygen sensor Engine: Running at 2,500 r/min after
having warmed up
0 « 1 V
(changes repeatedly)
71 Ignition switch-ST Engine: Cranking 8 V or more