Mitsubishi MOTORS Space Runner 1998, Workshop Manual

Page: 259 / 1164

GDI <4G9> -
Troubleshooting
13B-17
Code No.22 Crank angle sensor system Probable cause
Range of check
D Engine: During cranking
Set conditions
D Sensor output voltage does not change for 4 seconds (no pulse signal is
being input).
D Malfunction of the crank angle sensor
D Open circuit or short-circuited harness wire of the
crank angle sensor circuit
D Malfunction of the engine-ECU
NG
Repair
NG
Repair
OK
Replace the engine-ECU.
(3) NG
Check the harness wire between the
crank angle sensor and the earth, and
repair if necessary.
NG
Repair
NG
Replace the crank angle sensor.
OK
Replace the engine-ECU.
OK
Check trouble symptom.
NG
Check the harness wire between the
engine-ECU and the crank angle sen-
sor.
OK
Check trouble symptom.
(2) NG
Check the following connector:
B-51
OK
Check the following connector:
A-71
Measure at the crank angle sensor con-
nector A-71.
D Connect the connector
(Use the test harness
MD998478)
D Voltage between 2 (black clip)
and earth
(Engine: Cranking)
OK:
0 - 4.0 V
D Voltage between 2 (black clip)
and earth
(Engine: Idling)
OK:
1.5 - 2.5 V
NG
Measure at the crank angle sensor con-
nector A-71.
D Disconnect the connector, and
measure at the harness side.
(1) Voltage between 3 and earth
(Ignition switch: ON)
OK:
System voltage
(2) Voltage between 2 and earth
(Ignition switch: ON)
OK:
4.8 - 5.2 V
(3) Continuity between 1 and earth
OK:
Continuity
(1) NG
Check the harness wire between the
crank angle sensor and the engine con-
trol relay, and repair if necessary.