Mitsubishi Grandis. Manual — part 775
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-351
STEP 9. Connector check: C-110 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair or replace.
STEP 10. Check harness between B-16X
(terminal No. 2) A/C compressor relay connector
and C-110 (terminal No. 8) engine-ECU <M/T>
connector or engine-A/T-ECU <A/T> connector.
• Check earthing line for open/short circuit.
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair.
AK305618AB
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Connector: C-110
<L.H. drive vehicles>
<R.H. drive vehicles>
C-110 (GR)
C-110 (GR)
Harness side connector
AK301005
2
1
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4
AC
B-16X
Connector: B-16X
Harness side
connector
Relay box’s
Triangle marks
AK305618AB
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Connector: C-110
<L.H. drive vehicles>
<R.H. drive vehicles>
C-110 (GR)
C-110 (GR)
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-352
STEP 11. MUT-III data list
• Refer to Data List Reference Table
a. Item 49: A/C relay
1. Engine: Idling
2. A/C set temperature:
Maximum Cool when temperature in cabin is
25
°C or more
Maximum Hot when temperature in cabin is
25
°C or less
OK:
ON (when A/C is ON)
OFF (when A/C is OFF)
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
).
NO :
Replace engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
STEP 12. Connector check: C-110 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Repair or replace.
STEP 13. Check harness between B-16X
(terminal No. 2) A/C compressor relay connector
and C-110 (terminal No. 8) engine-ECU <M/T>
connector or engine-A/T-ECU <A/T> connector.
• Check earthing line for damage.
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Repair.
AK305618AB
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27
Connector: C-110
<L.H. drive vehicles>
<R.H. drive vehicles>
C-110 (GR)
C-110 (GR)
Harness side connector
AK301005
2
1
3
4
AC
B-16X
Connector: B-16X
Harness side
connector
Relay box’s
Triangle marks
AK305618AB
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Connector: C-110
<L.H. drive vehicles>
<R.H. drive vehicles>
C-110 (GR)
C-110 (GR)
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-353
STEP 14. Connector check: C-307 ignition switch
connector
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Repair or replace.
STEP 15. Check harness between C-307 (terminal
No. 4) ignition switch connector and B-16X
(terminal No. 3) A/C compressor relay connector.
NOTE: Before checking harness, check intermediate
connectors C-17, C-31
*1
,C-01
*2
, C-205,and C-202
and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 16 .
NO :
Repair.
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AK305629
C-307
C-307
Connector: C-307
Harness side connector
<R.H.drive vehicle>
<L.H.drive vehicle>
AB
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AK305629
C-307
C-307
Connector: C-307
Harness side connector
<R.H.drive vehicle>
<L.H.drive vehicle>
AB
AK301005
2
1
3
4
AC
B-16X
Connector: B-16X
Harness side
connector
Relay box’s
Triangle marks
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-354
STEP 16. Check harness between battery and
B-16X (terminal No. 4) A/C compressor relay
connector.
NOTE: Before checking harness, check intermediate
connector A-16, and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Repair.
STEP 17. Check harness between B-16X
(terminal No. 1) A/C compressor relay connector
and B-120 (terminal No. 1) A/C compressor
assembly connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Replace A/C compressor magnet clutch.
NO :
Repair.
AK301005
2
1
3
4
AC
B-16X
Connector: B-16X
Harness side
connector
Relay box’s
Triangle marks
AK301005
2
1
3
4
AC
B-16X
Connector: B-16X
Harness side
connector
Relay box’s
Triangle marks
1
AK305637AB
B-120 (B)
Connector: B-120
Harness side connector
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