Mitsubishi Eclipse. Manual — part 332
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-821
INSPECTION PROCEDURE 26: Generator output voltage is low (approximately 12.3 volts)
AK000676
4
3
2
6
3 4
7 8
1 2
5
1
BL
ACK
-RED
BL
ACK
-RED
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
GENERATOR
VOLTAGE
REGULATOR
B-45
1
2
B-13
MU802749
33 <M/T>
8 <A/T>
C-53 <M/T>
(MU803771)
C-50 <A/T>
(MU803784)
34
33
32
36
35
37
42
45
31
39
38
46
40 41
43 44
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
3132 33
34 35
1
10
Generator Circuit
AK300067
CONNECTOR: B-13
AB
B-13 (B)
AK300064
CONNECTOR: B-45
AB
B-45 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-822
.
CIRCUIT OPERATION
• The EMC <M/T> or PCM <A/T> controls genera-
tor out put current by duty-controlling continuity
between the generator G terminal (terminal No.
1) and ground.
.
TROUBLESHOOTING HINTS (The most likely
causes for this charging system: )
• Malfunction of the charging system.
• Short circuit in the harness between generator G
terminal and ECM <M/T> or PCM <A/T>.
• ECM <M/T> or PCM <A/T> failed.
DIAGNOSIS
STEP 1. Measure the voltage at generator intermediate
connector B-13 by backprobing.
(1) Do not disconnect the connector B-13.
(2) Start the engine and run at idle.
(3) Measure the voltage between terminal No. 2 and ground by
backprobing.
a. Engine: warming up
b. Radiator fan: stopped
c. Headlight switch: OFF to ON
d. Rear defogger switch: OFF to ON
e. Stoplight switch: OFF to ON
• Voltage rises by 0.2 − 3.5 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 0.2 and 3.5 volts?
YES : Replace the generator. Then confirm that the
malfunction symptom is eliminated.
NO : Go to Step 2.
AK300060
ECM
CONNECTOR: C-53 <M/T>
AH
C-53 (G)
AK300060AD
C-50 (GR)
PCM
CONNECTOR: C-50 <A/T>
AK300739
CONNECTOR: B-13
AB
B-13 (B)
3
4
7
8
1
2
5
6
HARNESS CONNECTOR:
COMPONENT SIDE
AK000365 AE
B-13 HARNESS
CONNECTOR:
HARNESS SIDE
1 2 3 4
5 6 7 8
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-823
STEP 2. Check connector B-13 at generator intermediate
connector for damage.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
STEP 3. Check connector B-45 at generator connector for
damage.
Q: Is the connector in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK300739
CONNECTOR: B-13
AB
B-13 (B)
3
4
7
8
1
2
5
6
HARNESS CONNECTOR:
COMPONENT SIDE
AK300740
2
1
3
4
CONNECTOR: B-45
AB
B-45 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-824
STEP 4. Check connector C-53 at ECM <M/T> or connector
C-50 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK300417
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
CONNECTOR: C-53 <M/T>
C-53 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300414
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
C-50 (GR)
CONNECTOR: C-50 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст