Mitsubishi L200. Manual — part 161
TROUBLESHOOTING
DIESEL FUEL
13A-440
Inspection Procedure 3: The Engine Warning Lamp Remains Illuminating and Never Goes Out or Is
Blinking.
AKB00284
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1 2 3
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15
7.5A
C-207
C-209
C-112
B-W
B-W
Engine
warning
lamp
Combination meter
4
6
12
15
J/B
C-112
C-111
MU801586
36
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Grey
R: Red P: Pink V: Violet PU: Purple SI: Silver
L-B
2
R
IG2
ST
LOCK
ACC
IG1
Ignition switch
C-307
R-W
R-W
Engine-ECU
C-53*¹ or
C-35*²
C-105
C-111
63
46
23
J/C (5)
C-132
Engine Warning Lamp (check engine lamp) Circuit
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
AB
TROUBLESHOOTING
DIESEL FUEL
13A-441
OPERATION
• Engine-ECU has detected failed sensor or failed
actuator. Or failure is possibly caused by short
circuit or other faults.
PROBABLE CAUSES
• Damaged connector (Engine-ECU connector,
combination meter connector)
• Damaged harness (Short circuit between engine-
ECU and combination meter)
• Failed combination meter
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check the illuminating condition of the
engine warning lamp.
Q: Is the engine warning lamp blinking?
YES :
Carry out the small injection quantity
learning procedure (Refer to GROUP 00
−
Precautions Before Service
− Small
Injection Quantity Learning Procedure ).
NO :
Go to Step 2 .
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. Connector check: C-105 engine-ECU
connector and C-111 combination meter
connector
Q: Are the check results normal?
YES :
Go to Step 4 .
NO :
Repair or replace.
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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
AK700806
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Harness side connector
C-111
C-111
Connector: C-111
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
TROUBLESHOOTING
DIESEL FUEL
13A-442
STEP 4. Check combination meter.
• Ignition switch: ON
• Disconnect C-111 combination meter connector
Q: Does the engine warning lamp go out?
YES :
Go to Step 5 .
NO :
Check combination meter (Refer to GROUP
54A
− Combination Meter − Check Chart for
Trouble Symptoms ).
AK700806
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61 60 59 58
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56
Harness side connector
C-111
C-111
Connector: C-111
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
TROUBLESHOOTING
DIESEL FUEL
13A-443
STEP 5. Perform resistance measurement for
short circuit at C-105 engine-ECU connector.
• Disconnect connector, and measure at harness
side.
• Disconnect C-111 combination meter connector.
• Voltage between terminal No. 46 and earth.
OK: 1 k
Ω or more
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair the harness wire.
STEP 6. 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 7 .
NO :
Register the injector ID.
STEP 7. Small injection quantity learning.
• Carry out the small injection quantity learning
procedure (Refer to GROUP 00
− Precautions
Before Service
− Small Injection Quantity Learn-
ing Procedure ).
Q: Does trouble symptom persist?
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 :
The procedure is complete.
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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
AK700806
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Harness side connector
C-111
C-111
Connector: C-111
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
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