Mitsubishi L200. Manual — part 166
TROUBLESHOOTING
DIESEL FUEL
13A-460
STEP 24. Connector check: A-16X starter relay
connector
Q: Is the check result normal?
YES :
Go to Step 25.
NO :
Repair or replace.
STEP 25. Check harness between A-16X
(terminal No. 2) starter relay connector and B-14
(terminal No. 9) inhibitor switch connector
NOTE: Before checking harness, check starter relay
connectors A-115 and B-10, and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 26.
NO :
Repair the damaged harness wire.
STEP 26. Check harness between A-16X
(terminal No. 3) starter relay connector and A-110
(terminal No. 1) starter connector
NOTE: Before checking harness, check starter relay
connectors A-27, and repair if necessary.
• Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 27.
NO :
Repair the damaged harness wire.
STEP 27. Check harness between A-10 (terminal
No. 1) starter connector and battery.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Replace the starter.
NO :
Repair the damaged harness wire.
AK501014
2
1
3
4
AC
A-16X
Connector: A-16X
Relay box's side connector
AK501014
2
1
3
4
AC
A-16X
Connector: A-16X
Relay box's side connector
AK700823
3
4
5
8
9
1
2
6
7
10
AB
Connector: B-14
B-14 (B)
Harness side
connector
AK501014
2
1
3
4
AC
A-16X
Connector: A-16X
Relay box's side connector
AK700920
1
Harness side connector
Connector: A-110
AB
A-110 (B)
1
AK700921
Harness side connector
Connector: A-10
AB
A-10
TROUBLESHOOTING
DIESEL FUEL
13A-461
Inspection Procedure 5: Starting Impossible (Starter operative but no initial combustion)
PROBABLE CAUSES
• Failed battery
• Improper fuel used
• Fuel contaminated with foreign matter
• Injector leaking or clogged
• Failed injector
• Fuel injection learning failure
• Fuel filter clogged
• Fuel line leaking or clogged
• Failed fuel pressure limiter valve
• Failed rail pressure sensor
• Failed supply pump (suction control valve)
• Failed glow system
• Timing belt broken
• Failed engine-ECU
• Air cleaner clogged
• Compression pressure low
DIAGNOSIS PROCEDURE
STEP 1. Check battery voltage.
• Measure battery voltage at cranking.
OK: 8 V or more
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Check battery (Refer to GROUP 54A
−
Battery
− On-vehicle Service − Battery test
).
STEP 2. M.U.T.-III diagnosis code.
Q: Is the diagnosis code set?
YES :
Inspection chart for diagnosis code (Refer
to
NO :
Go to Step 3 .
STEP 3. Check injector identification code.
• Check injector identification code (Refer to
GROUP 00
− Precautions Before Service − Injec-
tor Identification code Registration Procedure ).
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Register the injector ID.
STEP 4. M.U.T.-III data list.
• Item 40: Starter switch
OK:
ON (Ignition switch: ST)
OFF (Ignition switch: ON)
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Check for starting impossible to operate
(Refer to Inspection Procedure 4
STEP 5. Check timing belt for breakage.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Replace the timing belt.
STEP 6. Confirm the using fuel.
Q: Is the specified fuel being used?
YES :
Go to Step 7 .
NO :
Replace fuel.
STEP 7. Check glow system.
• Check glow system (Refer to Code No. P0381
<Euro5> or Inspection Procedure 25
<Except Euro5>).
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair or replace the failed item.
STEP 8. Check fuel supply line.
• Check for fuel leakage and clogging
• Check fuel filter for clogging
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair or replace the failed item.
STEP 9. Priming (air bleeding)
• Bleed air
Q: Does trouble symptom persist?
YES :
Go to Step 10 .
NO :
The procedure is complete.
TROUBLESHOOTING
DIESEL FUEL
13A-462
STEP 10. M.U.T.-III actuator test.
• Refer to Actuator Test Reference Table
a. Item 19: Suction control valve
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Replace the suction control valve. After
replacing the suction control valve, learn the
supply pump (Refer to GROUP 00
−
Precautions Before Service
− What The
Common Rail Engine Learns ).
STEP 11. Check suction control value itself.
• Check suction control value itself (Refer to
).
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Replace the suction control valve. After
replacing the suction control valve, learn the
supply pump (Refer to GROUP 00
−
Precautions Before Service
− What The
Common Rail Engine Learns ).
STEP 12. M.U.T.-III data list.
• Refer to Data List Reference Table
.
a. Item 63: Rail pressure sensor
b. Item 64: Rail pressure target
Q: Are the check results normal?
YES :
Go to Step 14 .
NO :
Go to Step 13 .
STEP 13. Replace the rail pressure sensor.
• Replace the common-rail assembly.
Q: Does trouble symptom persist?
YES :
Go to Step 18 .
NO :
The procedure is complete.
STEP 14. Check the waveforms of crank angle
sensor and camshaft position sensor.
• Check the waveforms during cranking.
Q: Are waveforms being output?
YES :
Go to Step 15 .
NO :
Proceed to the diagnostic code procedure
for the sensor that does not output
waveforms (Refer to Inspection Chart for
Diagnosis Code
).
STEP 15. Check compression pressure.
• Check compression pressure (Refer to GROUP
11A
− On-vehicle Service − Compression Pres-
sure Check ).
Q: Is the check result normal?
YES :
Go to Step 16 .
NO :
Check and repair the engine itself.
STEP 16. Check injector itself.
• Check injector itself (Refer to
).
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Replace the injector at the failed cylinder.
After replacing the Injector, register the
injector identification code and learn fuel
injection (Refer to GROUP 00
− Precautions
Before Service
− What The Common Rail
Engine Learns ).
STEP 17. M.U.T.-III data list.
• Refer to Data List Reference Table
.
a. Item 5: Barometric pressure sensor
b. Item 7: Engine coolant temperature sensor
c. Item 8: EGR gas temperature sensor
<Euro5>
d. Item 8: Intake air temperature sensor No. 2
<Except Euro5>
e. Item 21: Fuel temperature sensor
f. Item 43: Intake air temperature sensor No. 1
Q: Are the check results normal?
YES :
Go to Step 18 .
NO :
Perform the diagnosis code classified check
procedure for the sensor that has shown an
abnormal data value (Refer to Inspection
Chart for Diagnosis Code
STEP 18. Check the trouble symptoms.
Q: Does trouble symptom persist?
TROUBLESHOOTING
DIESEL FUEL
13A-463
YES :
Replace the engine-ECU. When the engine-
ECU is replaced, write the chassis number
(Refer to GROUP 00
− Precautions Before
Service
− How to Perform Chassis Number
Writing ). After replacing the engine-ECU,
register the injector identification code and
learn fuel injection (Refer to GROUP 00
−
Precautions Before Service
− What The
Common Rail Engine Learns ). After
registering the injector identification code,
the vehicle equipped with the DPF carries
out the forcible DPF regeneration. (Refer to
GROUP 17
− Emission Control − Diesel
Particulate Filter (DPF) System
− Forcible
DPF Regeneration ).
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunction ).
Inspection Procedure 6: Improper Starting (Long time to start)
PROBABLE CAUSES
• Failed battery
• Improper fuel used
• Fuel contaminated with foreign matter
• Injector leaking or clogged
• Failed injector
• Fuel injection learning failure
• Fuel filter clogged
• Fuel line leaking or clogged
• Failed fuel pressure limiter valve
• Failed rail pressure sensor
• Failed supply pump (suction control valve)
• Failed supply pump correction learning
• Failed glow system
• Failed EGR system operation
• Failed engine-ECU
• Compression pressure low
DIAGNOSIS PROCEDURE
STEP 1. Check battery voltage.
• Measure battery voltage during cranking.
OK: 8 V or more
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Check battery (Refer to GROUP 54A
−
Battery
− On-vehicle Service − Battery Test
).
STEP 2. M.U.T.-III diagnosis code.
Q: Is the diagnosis code set?
YES :
Inspection chart for diagnosis code (Refer
to
NO :
Go to Step 3 .
STEP 3. M.U.T.-III data list.
• Refer to Data List Reference Table (Refer to
).
a. Item 5: Barometric pressure sensor
b. Item 7: Engine coolant temperature sensor
c. Item 8: EGR gas temperature sensor
<Euro5>
d. Item 8: Intake air temperature sensor No. 2
<Except Euro5>
e. Item 16: EGR valve position sensor
f. Item 17: EGR valve target position
g. Item 21: Fuel temperature sensor
h. Item 43: Intake air temperature sensor No. 1
Q: Are the check results normal?
YES :
Go to Step 4 .
NO :
Perform the diagnosis code classified check
procedure for the sensor that has shown an
abnormal data value (Refer to Inspection
Chart for Diagnosis Code
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