Mitsubishi FUEL Manual page 35

Multipoint fuel injection (mpi)
Table of Contents

Advertisement

Check the following connector:
B-64
OK
Measure at camshaft position sensor
connector B-64.
D Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 3
and earth
(Ignition switch: ON)
OK: System voltage
(2) The voltage between terminal 2
and earth
(Ignition switch: ON)
OK: 4.8 - 5.2 V
(3) The resistance between terminal
1 and earth
OK: 2 W or less
OK
Use an analyzer to measure the
output waveform at camshaft position
sensor connector B-64.
D Use test harness (MB991709) to
connect the connector, and
measure at the pick-up harness.
D Engine: Idling
D The voltage between terminal 2
and earth
OK: A normal waveform should
be displayed as described
on P.13A-88 (Inspection
Procedure Using an Ana-
lyzer), its maximum value
should be 4.8 V or more,
and its minimum value
should be 0.6 V or less
with no noise in waveform.
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
MPI <4G6> -
Troubleshooting
NG
Repair
(1) NG
Check the following connector:
C-31
Check the harness wire between the
camshaft position sensor connector
and the engine control relay, and
repair if necessary.
(2) NG
Measure at engine-ECU connector
C-40 <M/T> or engine-A/T-ECU
connector C-176 <A/T>.
D Measure the voltage at the
engine-ECU terminal <M/T> or
engine-A/T-ECU terminal <A/T>.
D Disconnect connector B-64.
D Ignition switch: ON
D The voltage between terminal 88
<M/T>, 56 <A/T> and earth
OK: 4.8 - 5.2 V
Check the following connector:
C-40 <M/T>, C-176 <A/T>
Check the harness wire between the
intermediate connector and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
Check the trouble symptoms.
(3) NG
Check the harness wire between the
camshaft position sensor connector
and earth, and repair if necessary.
NG
Check the camshaft position sensing
cylinder.
Replace the camshaft position
sensor.
Check the trouble symptoms.
Check the following connectors:
B-64, C-31, C-40, C-176
Check the harness wires between the camshaft position sensor connector and the
engine-ECU <M/T> or engine-A/T-ECU <A/T>, the camshaft position sensor connector
and the engine control relay, and the camshaft position sensor connector and earth.
Then, repair if necessary.
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)
NG
OK
OK
NG
NG
OK
NG
OK
NG
NG
OK
NG
NG
OK
13A-35
Repair
Check the following connector:
C-40 <M/T>, C-176 <A/T>
NG
OK
Repair
Check the harness wire between the
camshaft position sensor connector
and the engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
Repair
Repair
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
Replace
Repair

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Mpi 4g6Mpi 6a1

Table of Contents