Mitsubishi Grandis. Manual — part 760
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-291
STEP 13: Check harness between C-307 (terminal
No. 5) ignition switch connector and B-116
(terminal No. 1) starter connector.
NOTE: Before checking harness, check intermediate
connectors B-17 and C-18, and repair if necessary.
• Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Repair.
STEP 14: Check harness between B-115 (terminal
No. 1) starter connector and battery.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Replace starter.
NO :
Repair.
1
2
3
4
5
6
AK305629
C-307
C-307
Connector: C-307
Harness side connector
<R.H.drive vehicle>
<L.H.drive vehicle>
AB
AK305631
1
B-116 (B)
Connector: B-116
Harness side connector
AB
AK305630
1
B-115
Connector: B-115
Harness side connector
AB
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-292
Inspection Procedure 5: Starting Impossible (No Initial Combustion) <A/T>
COMMENT ON TROUBLE SYMPTOM
• Failure is possibly caused by failed starter itself
or failed related circuit.
PROBABLE CAUSE
• Failed battery
• Failed inhibitor switch
• Failed starter motor
• Open/short circuit in starter associated circuit or
loose connector contact
AK305576
1
5 6
1 2 3 4
7
8
9 10
1 2 3
4 5 6
31
35363738394041 42 43
444546474849
50 51
5253
545556
57 58
32
33 34
1
M
Battery
Inhibitor
switch
OFF
ON
AB
Starter
B-115
B-116
(MU801211)
C-111
(MU803803)
B-111
(MU802355)
B-17
B-W
C-307
2
7
10
9
B-W
B-W
Engine-A/T-ECU
B-Y
B-L
1
51
1
B-Y
C-18
IG2
ST
LOCK
ACC
IG1
Ignition switch
5
Stating impossible (no initial combustion) <A/T>
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
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-293
DIAGNOSIS PROCEDURE
STEP 1: Check battery voltage.
• Measure battery voltage at cranking.
OK: 8 V or higher
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Check battery (Refer to GROUP 54A
−
Battery-On-vehicle Service
− Battery Test
STEP 2: MUT-III data list
• Refer to Data List Reference Table
a. Item 18: Cranking signal
OK:
ON (Ignition switch: ST)
OFF (Ignition switch: ON)
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Go to Step 3.
STEP 3: Connector check: C-111 engine-A/T-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair or replace.
STEP 4: Perform voltage measurement at C-111
engine-A/T-ECU connector.
• Disconnect connector, and measure at the
harness side.
• Ignition switch: ST
• Voltage between terminal No. 51 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Go to Step 5.
STEP 5: Connector check: B-111 inhibitor switch
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair or replace.
AK305625AB
Connector: C-111
<L.H. drive vehicles>
<R.H. drive vehicles>
C-111 (GR)
C-111 (GR)
Harness side connector
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
52
53
54
55
56
57
58
50
51
AK305625AB
Connector: C-111
<L.H. drive vehicles>
<R.H. drive vehicles>
C-111 (GR)
C-111 (GR)
Harness side connector
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
52
53
54
55
56
57
58
50
51
AK305632
8
9
3
4
5
1
2
6
7
10
B-111 (B)
Connector: B-111
Harness side connector
AB
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-294
STEP 6: Perform voltage measurement at B-111
inhibitor switch connector
• Disconnect connector, and measure at the
harness side.
• Ignition switch: ST
• Voltage between terminal No. 10 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Go to Step 7.
STEP 7: Connector check: C-307 ignition switch
connector
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair or replace.
STEP 8: Check ignition switch
• Check ignition switch (Refer to GROUP 54A −
Ignition switch
− Inspection
).
Q: Is the check result normal?
YES :
Check intermediate connector C-18 and
repair if necessary. If intermediate
connector is normal, check and repair
harness between B-111 (terminal No. 10)
inhibitor switch connector and C-307
(terminal No. 5) ignition switch connector.
• Check power supply line for
open/short circuit.
NO :
Replace ignition switch.
AK305632
8
9
3
4
5
1
2
6
7
10
B-111 (B)
Connector: B-111
Harness side connector
AB
1
2
3
4
5
6
AK305629
C-307
C-307
Connector: C-307
Harness side connector
<R.H.drive vehicle>
<L.H.drive vehicle>
AB
AK305632
8
9
3
4
5
1
2
6
7
10
B-111 (B)
Connector: B-111
Harness side connector
AB
1
2
3
4
5
6
AK305629
C-307
C-307
Connector: C-307
Harness side connector
<R.H.drive vehicle>
<L.H.drive vehicle>
AB
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