Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 379

13A-20
Code No.23 Camshaft position sensor system
Range of check
While engine is cranking or running
Set conditions
Sensor output voltage does not change for 4 seconds (no pulse signal is
being input).
or
Abnormal pulse signal pattern is output.
Measure at the camshaft position sen-
sor connector A-81.
Connect the connector (Use the
test harness MB991709)
Voltage between 2 and earth
(Engine: Cranking)
OK: 0 – 4.0 V
Voltage between 2 and earth
(Engine: Idling)
OK: 0.5 – 2.0 V
OK
Replace the engine-ECU.
GDI –
Troubleshooting
NG
Measure at the camshaft position sen-
sor connector A-81.
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
OK
Check the following connector:
A-81
OK
Check trouble symptom.
NG
Replace the camshaft position sensor.
Probable cause
Malfunction of the camshaft position sensor
Open circuit or short-circuited harness wire of the
camshaft position sensor
Malfunction of the engine-ECU
(1) NG
Check the harness wire between the
camshaft position sensor and the en-
gine control relay, and repair if neces-
sary.
(2) NG
Check the following connector:
B-31
(3) NG
Check trouble symptom.
Check the harness wire between the
engine-ECU and the camshaft position
sensor.
NG
Repair
Replace the engine-ECU.
Check the harness wire between the
camshaft position sensor and the earth,
and repair if necessary.
OK
NG
Repair
NG
OK
NG
Repair