Mitsubishi FUEL Manual page 132

13A-132
Code No. P0340 Top dead centre sensor system
Range of Check
D After the engine was started
Set Conditions
D The sensor output voltage does not change for 4 seconds (no pulse signal
input).
Check the following connector:
B-42
OK
Measure at distributor connector
B-42.
D Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 6
and earth
(Ignition switch: ON)
OK: System voltage
(2) The voltage between terminal 5
and earth
(Ignition switch: ON)
OK: 4.8 - 5.2 V
(3) The resistance between terminal
7 and earth
OK: 2 W or less
OK
Use an analyzer to measure the
output waveform at distributor
connector B-42.
D Use test harness (MB991348) to
connect the connector, and
measure at the pick-up harness.
D Engine: Idling
D The voltage between terminal 5
and earth
OK: A normal waveform should
be displayed as described
on P.13A-182* (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.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <6A1> - MPI <6A1> -
Troubleshooting Troubleshooting
NG
Repair
(1) NG
Check the following connector:
C-31
Check the harness wire between the
distributor connector and the engine
control relay, and repair if necessary.
(2) NG
Measure at engine-ECU connector
C-167.
D Measure the voltage at the
engine-ECU terminal.
D Disconnect connector B-42.
D Ignition switch: ON
D The voltage between terminal 50
and earth
OK: 4.8 - 5.2 V
Check the following connector:
C-167
Check the harness wire between the
distributor connector and the
engine-ECU.
Check the trouble symptoms.
(3) NG
Check the harness wire between the
distributor connector and earth, and
repair if necessary.
NG
Replace the distributor.
Check the trouble symptoms.
Check the distributor.
Check the following connectors:
C-31, C-167
Check the harness wires between the distributor connector and the engine-ECU, the
distributor connector and the engine control relay, and the distributor connector and
earth. Then, repair if necessary.
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)
Probable cause
D Malfunction of the camshaft position sensor
D Open or short circuit in the camshaft position
sensor circuit or loose connector contact.
D Malfunction of engine-ECU
NG
OK
OK
NG
NG
OK
NG
OK
NG
NG
NG
OK
NG
OK
Repair
Check the following connector:
C-167
NG
OK
Repair
Check the harness wire between the
distributor connector and the
engine-ECU, and repair if necessary.
Repair
Repair
Replace the engine-ECU.
Replace
Repair