Mitsubishi Grandis. Manual — part 737
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-199
STEP 6. Connector check: C-113 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Check intermediate connector B-17, and
repair if necessary (R. H. drive vehicles). If
intermediate connector is normal, check and
repair harness between B-20 (terminal No.
3) power steering pressure sensor
connector and C-113 (terminal No. 97)
engine-ECU <M/T> connector or
engine-A/T-ECU <A/T> connector.
• Check power supply line for damage.
NO :
Repair or replace.
STEP 7. Connector check: C-113 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair or replace.
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
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112
113
114
115
116
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119
120
Harness side connector
AK305622
1
2
3
AB
Connector: B-20
B-20 (B)
B-20 (B)
Harness side
connector
<L.H. drive vehicles>
<R.H. drive vehicles>
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
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97
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Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-200
STEP 8. Check harness between B-20 (terminal
No. 3) power steering fluid pressure sensor
connector and C-113 (terminal No. 97)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
NOTE: Before checking harness, check intermediate
connector B-17, and repair if necessary (R. H. drive
vehicles).
.
•
Check power supply line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair.
STEP 9. MUT-III data list
• Refer to Data List Reference Table
a. Item B4: Power steering fluid pressure sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to
GROUP00
− How to Use
Troubleshooting/Inspection Service Points
).
NO :
Replace engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
STEP 10. Perform resistance measurement at
B-20 power steering fluid pressure sensor
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 1 and earth.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Go to Step 11.
AK305622
1
2
3
AB
Connector: B-20
B-20 (B)
B-20 (B)
Harness side
connector
<L.H. drive vehicles>
<R.H. drive vehicles>
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
91
92
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95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
Harness side connector
AK305622
1
2
3
AB
Connector: B-20
B-20 (B)
B-20 (B)
Harness side
connector
<L.H. drive vehicles>
<R.H. drive vehicles>
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-201
STEP 11. Connector check: C-113 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair or replace.
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
91
92
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96
97
98
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101
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109
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111
112
113
114
115
116
117
118
119
120
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-202
STEP 12. Check harness between B-20 (terminal
No. 1) power steering fluid pressure sensor
connector and C-113 (terminal No. 96)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
NOTE: Before checking harness, check intermediate
connector B-17 (R. H. drive vehicles) and C-116, and
repair if necessary.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair.
STEP 13. Perform voltage measurement at C-112
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
• Measure engine-ECU <M/T> or engine-A/T-ECU
<A/T> terminal voltage.
• Ignition switch: ON
• Voltage between terminal No. 84 and earth.
OK: 1V or less (Steering wheel: Not
operated)
Voltage rises (Steering wheel: Operated)
Q: Is the check result normal?
YES :
Go to Step17 .
NO :
Go to Step 14 .
AK305622
1
2
3
AB
Connector: B-20
B-20 (B)
B-20 (B)
Harness side
connector
<L.H. drive vehicles>
<R.H. drive vehicles>
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
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97
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109
110
111
112
113
114
115
116
117
118
119
120
Harness side connector
AK305617
Connector: C-112
C-112 (GR)
C-112 (GR)
AB
Harness side connector
<R.H. drive vehicles>
<L.H. drive vehicles>
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