Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 83

13D-18
Code No. 23 Camshaft position sensor system
Range of Check
D Ignition switch: ON
D Engine speed is approx. 50 r/min or more.
Set conditions
D Sensor output voltage does not change for 4 seconds (no pulse signal input.)
Measure at the camshaft position sensor connector A-78.
D Connect the connector. (Use the test harness: MB991223 and
jumper wire.)
D Voltage between 2 and earth (Engine: cranking)
OK: 0.4 - 3.0 V
D Voltage between 2 and earth (Engine: idling)
OK: 1.5 - 2.0 V
Measure at the camshaft position sensor connector A-78.
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
OK
NG
Check the following con-
nector: A-78
OK
Check trouble symptom.
NG
Replace the camshaft position sensor.
MPI -
NG
Repair
Troubleshooting
Probable cause
D Malfunction of the camshaft position sensor
D Improper
short-circuited harness wire of the camshaft position
sensor circuit
D Malfunction
engine-A/T-ECU <A/T>
OK
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
1. NG
Check the harness wire between the camshaft position sensor
and the control relay connector, and repair if necessary.
2. NG
Check the following con-
nector: B-51 <M/T>, B-112
<A/T>
3. NG
OK
Check trouble symptom.
NG
Check the harness wire
between the engine-ECU
<M/T> or engine-A/T-ECU
<A/T> and the camshaft
position sensor connector.
OK
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
Check the harness wire between the camshaft position sensor
and the earth, and repair if necessary.
connector contact, open circuit
of the engine-ECU <M/T>
NG
Repair
NG
Repair
or
or