Mitsubishi L200. Manual — part 159
TROUBLESHOOTING
DIESEL FUEL
13A-432
SYMPTOM PROCEDURES
Inspection Procedure 1: Communication with Engine-ECU Is Not Possible
TROUBLESHOOTING
DIESEL FUEL
13A-433
OPERATION
• The M.U.T.-III receives data from the engine-ECU
via the CAN bus line.
PROBABLE CAUSES
• Damaged connector (Engine-ECU connector,
diagnosis connector)
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
AKA00111
101 102
103104 105 106107 108109 110 111112 113 114115
118119 120 121122 123124 125126127 128 129130
131132 133 134135 136137 138139140 141142 143
146147 148 149150 151152 153154155 156 157158
117
145
116
144
7
6
22
11
C-53*¹ or
C-35*²
20*¹ or
21*²
9*¹ or
10*²
109
108
R
B
R
B
J/C (CAN 2)
C-01
CAN Communication Circuit
Engine-ECU
C-103
16
14
6
21
10
22
11
4
5
R
J/C (CAN 1)
C-119
B
R-L
B-L
W-B
B
B
Diagnosis connector
C-22
MU803797
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
12
15A
J/B
13
1
C-213
C-208
W
Fusible link 20
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
AB
TROUBLESHOOTING
DIESEL FUEL
13A-434
• Damaged harness (Open or short circuit in the
engine-ECU power supply circuit, open circuit
between diagnosis connector and J/B connector,
and open circuit between diagnosis connector
and earth)
• Failed CAN bus line
• Failed M.U.T.-III
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check the V.C.I. indicator lamp
illuminates.
• Connect the M.U.T.-III to the diagnosis connector.
Q: Is the V.C.I. indicator lamp illuminates in a green
colour?
YES :
CAN bus diagnosis (Refer to GROUP 54C
−
Troubleshooting
− Can Bus Diagnosis Table
).
NO :
Go to Step 2 .
AK600277
Diagnosis
connector
MB991827
MB991824
MB991910
<L.H. drive vehicles>
Diagnosis
connector
MB991827
MB991824
MB991910
<R.H. drive vehicles>
AC
TROUBLESHOOTING
DIESEL FUEL
13A-435
STEP 2. Connector check: C-22 diagnosis
connector
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair or replace.
STEP 3. Perform voltage measurement for open
circuit at C-22 diagnosis connector.
• Voltage between terminal No. 16 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair harness between C-22 (terminal No.
16) diagnosis connector and C-208
(terminal No. 13) J/B connector.
AK700805
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
C-22 (B)
Connector: C-22
<R.H. drive vehicles>
C-22 (B)
AB
Harness side connector
<L.H. drive vehicles>
AK700805
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
C-22 (B)
Connector: C-22
<R.H. drive vehicles>
C-22 (B)
AB
Harness side connector
<L.H. drive vehicles>
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