Mitsubishi Lancer Evolution IX. Manual — part 454
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-291
Inspection Procedure 19: Battery Rundown
COMMENT ON TROUBLE SYMPTOM
• Failure is possibly caused by failed alternator,
failed generation control circuit or other faults.
PROBABLE CAUSES
• Failed battery
• Alternator G terminal short-circuit
• Failed alternator
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check battery voltage.
• Measure battery voltage during cranking.
OK: 8 V or more
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. Connector check: B-14 intermediate
connector
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair or replace the connector.
STEP 3. Perform voltage measurement at B-14
intermediate connector.
• Disconnect connector, and measure at male con-
nector side.
• Ignition switch: "ON"
• Voltage between terminal No. 9 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Go to Step 4 .
AK305035
3
4
5
8
9
1
2
6
7
10
Connector : B-14
Female side
connector
B-14(B)
AC
AK401753
1
2 3
6
7 8
4 5
9 10
Connector : B-14
Male side
connector
B-14(B)
AB
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-292
STEP 4. Connector check: C-208 ignition switch
connector
Q: Is the check result normal?
YES :
Check intermediate connectors C-01, C-23
<L.H. drive vehicles>, C-124, C-211 and
C-214, and repair if necessary. If
intermediate connectors are normal, check
and repair harness between B-14 (terminal
No. 9) intermediate connector and C-208
(terminal No. 2) ignition switch connector.
• Check power supply line for
open/short circuit.
NO :
Repair or replace the connector.
STEP 5. Perform voltage measurement at B-14
intermediate connector.
• Disconnect connector, and measure at female
connector side.
• Ignition switch: "ON"
• Voltage between terminal No. 10 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Go to Step 6 .
STEP 6. Connector check: B-25 alternator
connector
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair or replace the connector.
AK305251
1
2
3
4
5
6
Harness side connector
Connector: C-208
C-208
<L. H. drive vehicles>
<R. H. drive vehicles>
C-208
AB
AK401753
1
2 3
6
7 8
4 5
9 10
Connector : B-14
Male side
connector
B-14(B)
AB
AK305035
3
4
5
8
9
1
2
6
7
10
Connector : B-14
Female side
connector
B-14(B)
AC
AK305036
M
2
1
3
4
Harness side
connector
AB
Connector : B-25
B-25(GR)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-293
STEP 7. Check harness between B-14 (terminal
No. 10) intermediate connector and B-25
(terminal No. 1) alternator connector.
• Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair the damaged harness wire.
STEP 8. Check harness between B-14 (terminal
No. 9) intermediate connector and B-25 (terminal
No. 3) alternator connector.
• Check power supply line for open/short circuit.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair the damaged harness wire.
AK305035
3
4
5
8
9
1
2
6
7
10
Connector : B-14
Female side
connector
B-14(B)
AC
AK305036
M
2
1
3
4
Harness side
connector
AB
Connector : B-25
B-25(GR)
AK305035
3
4
5
8
9
1
2
6
7
10
Connector : B-14
Female side
connector
B-14(B)
AC
AK305036
M
2
1
3
4
Harness side
connector
AB
Connector : B-25
B-25(GR)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-294
STEP 9. Check harness between B-25 (terminal
No. 3) alternator connector and C-208 (terminal
No. 2) ignition switch connector.
NOTE: Before checking harness, check intermediate
connectors C-01, C-23 <L.H. drive vehicles>, C-124,
C-211 and C-214, and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Replace the alternator.
NO :
Repair the damaged harness wire.
STEP 10. Connector check: C-121 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair or replace the connector.
AK305036
M
2
1
3
4
Harness side
connector
AB
Connector : B-25
B-25(GR)
AK305251
1
2
3
4
5
6
Harness side connector
Connector: C-208
C-208
<L. H. drive vehicles>
<R. H. drive vehicles>
C-208
AB
AK501995
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
AB
Connector: C-121
C-121 (GR)
C-121 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст