Mitsubishi Eclipse. Manual — part 594
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-919
STEP 3. Check connector C-41 at the combination meter
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.
STEP 4. Check the power supply voltage at combination
meter harness side connector C-41.
(1) Disconnect the connector C-41 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 52 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 5.
NO : Check harness connectors C-108 and C-111 at
intermediate connector for damage, and repair or
replace as required. Refer to GROUP 00E, Harness
Connector Inspection
. If intermediate
connectors are in good condition, repair harness wire
between ignition switch connector C-87 (terminal No.
2) and combination meter connector C-41 (terminal
No. 52) because of open circuit. Then confirm that the
malfunction symptom is eliminated.
AK300741
44
45
41
46
47
42
43
49
50
51
52
48
55
56
54 53
CONNECTOR: C-41
AB
C-41 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300741
44
45
41
46
47
42
43
49
50
51
52
48
55
56
54 53
CONNECTOR: C-41
AB
C-41 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000364AD
56 55 54 53 52 5150 49 48
47 46 45 44 43 42 41
C-41 HERNESS
CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-920
STEP 5. Check connector C-51 at ECM <M/T> or connector
C-52 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK300458
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
CONNECTOR: C-52 <A/T>
C-52 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300443
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
CONNECTOR: C-51 <M/T>
C-51 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-921
STEP 6. Check the power supply voltage ECM connector
C-51 <M/T> or PCM connector C-52 <A/T>.
(1) Disconnect the connector C-51 <M/T> or C-52 <A/T> and
measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 22 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Replace the ECM or PCM. Then confirm that the
malfunction symptom is eliminated.
NO : Check harness connectors C-28 at intermediate
connector for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection
. If intermediate connectors is in
good condition, repair harness wire between
combination meter connector C-41 terminal 41 and
ECM connector C-51 (terminal No. 22) <M/T> or PCM
connector C-52 (terminal No. 22) <A/T> because of
open circuit. Then confirm that the malfunction
symptom is eliminated.
AK300741
44
45
41
46
47
42
43
49
50
51
52
48
55
56
54 53
CONNECTOR: C-41
AB
C-41 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01508AH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
C-51<M/T>, C-52<A/T>
HARNESS CONNECTORS:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-922
INSPECTION PROCEDURE 4: The Malfunction Indicator Lamp (SERVIVE ENGINE SOON or Check
Engine Lamp) Remains Illuminated and Never Goes Out.
AK301822
3
2
4 5 6
1 2 3
4 5 6
GREEN
1
RED-
YELLO
W
RED-
YELLO
W
BLA
CK-
WHITE
R
IG2
LOCK
ACC
IG1
C-111
MU801331
IGNITION
SWITCH
C-87
2
6
25
JUNCTION
BLOCK
52
41
MALFUNCTION INDICATOR LAMP
(SERVICE ENGINE SOON OR CHECK ENGINE LAMP)
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
21
22
ST
44 45
41
46 47
42 43
49 50 5152
48
55 56
54
53
C-41
C-28
7 8
5
3 4
35
34
10 11 12
2122 23 24
13 14 15
25 26 27
16
28
17
18 19 20
29
30 31
32 33
36 37
38
9
1 2
6
C-51 <M/T>, C-52 <A/T>
(MU803784)
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
Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) Circuit
1
6
4 5
11
10
1213
15
17
16
14
19
18
8 9
7
20
2 3
2122 23 2425 26 27 28
C-108
7.5A
23
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