Mitsubishi Eclipse. Manual — part 289
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-649
STEP 9. Check for open circuit and short circuit to ground
between idle air control motor connector B-34 and ECM
connector C-49 <M/T> or PCM connector C-50 <A/T>.
a. Idle air control motor connector B-34 (terminal No. 1) and
ECM connector C-49 (terminal No. 4) <M/T> or PCM con-
nector C-50 (terminal No. 14) <A/T>.
b. Idle air control motor connector B-34 (terminal No. 3) and
ECM connector C-49 (terminal No. 17) <M/T> or PCM con-
nector C-50 (terminal No. 28) <A/T>.
c. Idle air control motor connector B-34 (terminal No. 4) and
ECM connector C-49 (terminal No. 5) <M/T> or PCM con-
nector C-50 (terminal No. 15) <A/T>.
d. Idle air control motor connector B-34 (terminal No. 6) and
ECM connector C-49 (terminal No. 18) <M/T> or PCM con-
nector C-50 (terminal No. 29) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.
AK300408
1
2
3
4
5
6
CONNECTOR: B-34
AB
B-34 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300413
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
21
23
26
24
25
3
10
11
12
13
CONNECTOR: C-49 <M/T>
C-49 (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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-650
STEP 10. Check connector C-49 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 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 14.
AK300413
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
21
23
26
24
25
3
10
11
12
13
CONNECTOR: C-49 <M/T>
C-49 (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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-651
STEP 11. Check the idle air control motor operation using
special tool MB991709.
(1) Remove the idle air control motor.
(2) Connect special tool MB991709 to the idle air control motor.
(All terminals should be connected.)
(3) Use the jumper wires to connect terminal No. 2 of the idle
air control motor connector to the positive battery terminal.
(4) Check the ensure that the motor operates when the
terminals No. 1 and No. 3 of the idle air control motor
connector are respectively connected to the negative
battery terminal using a jumper wire.
• Vibration should be present at each application of volt-
age to test clip combination.
(5) Then use jumper wires to connect the terminal No. 5 of the
idle air control motor connector to the positive battery
terminal.
(6) Check the ensure that the motor operates when the
terminals No. 4 and No. 6 of the idle air control motor
connector are respectively connected to the negative
battery terminal using a jumper wire.
• Vibration should be present at each application of volt-
age to test clip combination.
(7) Install the idle air control motor. Refer to, Throttle Body
−
Q: Is the idle air control motor operating properly?
YES : Go to Step 12.
NO : Replace the idle air control motor. Then go to Step 14.
AK300408
1
2
3
4
5
6
CONNECTOR: B-34
AB
B-34 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01627AB
TERMINAL 2
IAC MOTOR
TERMINAL 5
MB991709
AKX01626
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-652
STEP 12. Check for harness damage between MFI relay
connector A-18X (terminal No. 4) and idle air control motor
connector B-34 (terminal No. 2, No. 5).
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair it. Then go to Step 14.
AK300454
2
1
3
4
CONNECTOR: A-18X
AB
A-18X
HARNESS CONNECTOR:
COMPONENT SIDE
AK300408
1
2
3
4
5
6
CONNECTOR: B-34
AB
B-34 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
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