Mitsubishi L200. Manual — part 81
TROUBLESHOOTING
DIESEL FUEL
13A-120
STEP 5. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair or replace the connector.
STEP 6. Check harness between A-107 (terminal
No. 1) engine coolant temperature sensor
connector and C-105 (terminal No. 63) engine-
ECU connector.
• Check output line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
STEP 7. M.U.T.-III data list
• Item 7: Engine coolant temperature sensor
OK:
Engine cold state: At ambient temperature
(atmospheric temperature) or equivalent.
Engine hot state: At 80
− 120 °C
Q: Is the check result normal?
AKA00089
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C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
AK501323
1
2
AB
A-107 (B)
Harness side
connector
Connector: A-107
AKA00089
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C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
TROUBLESHOOTING
DIESEL FUEL
13A-121
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
NO :
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 ).
STEP 8. Perform resistance measurement at A-
107 engine coolant temperature sensor
connector.
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 2 and earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Go to Step 9 .
STEP 9. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair or replace the connector.
AK501323
1
2
AB
A-107 (B)
Harness side
connector
Connector: A-107
AKA00089
1
2
3
4
5
6
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96
C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
TROUBLESHOOTING
DIESEL FUEL
13A-122
STEP 10. Check harness between A-107 (terminal
No. 2) engine coolant temperature sensor
connector and C-105 (terminal No. 87) engine-
ECU connector.
• Check earthing line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
AK501323
1
2
AB
A-107 (B)
Harness side
connector
Connector: A-107
AKA00089
1
2
3
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C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
TROUBLESHOOTING
DIESEL FUEL
13A-123
Code No. P0122: Throttle Position Sensor Circuit Low Input
OPERATION
• A power voltage of 5 V is applied to the elec-
tronic-controlled throttle valve (terminal No. 2)
from the engine-ECU (terminal No. 93).
• The power voltage is earthed to the engine-ECU
(terminal No. 34) from the electronic-controlled
throttle valve (terminal No. 4).
• The sensor signal is inputted to the engine-ECU
(terminal No. 40) from the electronic-controlled
throttle valve output terminal (terminal No. 1).
FUNCTION
• The throttle position sensor converts the throttle
valve position into voltage and inputs it into the
engine-ECU.
• The engine-ECU control the throttle valve posi-
tion.
TROUBLE JUDGMENT
Check Conditions
• Battery positive voltage is 8 − 16 V
• 2 seconds later after the ignition switch has been
in "ON" position or the engine has started up
AKA00096
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1 2 3 4 5
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93
2
Electronic-controlled
throttle valve
R
W
Engine-ECU
40
34
1
4
Throttle Position Sensor Circuit
C-105
A-132
(MU805200)
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Gray
R: Red P: Pink V: Violet PU: Purple SI: Silver
Hall IC
5 V
B
B
AB
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