Mitsubishi Montero (2004+). Manual — part 304
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-703
STEP 5. Check connector B-22X at MFI relay for damage.
Q: Is the connector in good condition?
YES : Repair harness wire between MFI relay connector
B-22X terminal No. 1 and intake manifold tuning
solenoid connector B-04 terminal No. 1 because of
open circuit or short circuit to ground. Then go to Step
12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
STEP 6. Measure the power supply voltage at PCM
connector D-132 by backprobing.
(1) Do not disconnect the connector D-132.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 4 and ground by
backprobing.
• 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 9.
NO : Go to Step 7.
AK200951
2 1
3
4
B-22X
AB
CONNECTOR: B-22X
HARNESS
CONNECTOR:
COMPONENT SIDE
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
AK201426
2
3 4
5
6 7 8 9
1
10
14 15
161718
1920
21 22
232425
2627
111213
AB
D-132 HARNESS
CONNECTOR:
HARNESS SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-704
STEP 7. Check connector D-132 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
STEP 8. Check for open circuit and short circuit to ground
between intake manifold tuning solenoid connector B-04
(terminal No. 2) and PCM connector D-132 (terminal No.
04).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
AK200971
1
2
AB
HARNESS
CONNECTOR:
COMPONENT
SIDE
CONNECTOR: B-04
B-04(B)
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-705
STEP 9. Check connector D-132 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
STEP 10. Check for harness damage between MFI relay
connector B-22X (terminal No. 1) and intake manifold
tuning solenoid connector B-04 (terminal No. 1).
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair it. Then go to Step 12.
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
AK200951
2 1
3
4
B-22X
AB
CONNECTOR: B-22X
HARNESS
CONNECTOR:
COMPONENT SIDE
AK200971
1
2
AB
HARNESS
CONNECTOR:
COMPONENT
SIDE
CONNECTOR: B-04
B-04(B)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-706
STEP 11. Check for harness damage between intake
manifold tuning solenoid connector B-04 (terminal No. 2)
and PCM connector D-132 (terminal No. 4).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
STEP 12. Using scan tool MB991958, check actuator test
item 11: Variable Induction control Solenoid.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the actuator test mode for item
11, Intake manifold tuning solenoid.
• An operation sound should be heard and vibration
should be felt when the intake manifold tuning solenoid
is operated.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : The inspection is complete.
NO : Retry the troubleshooting.
AK200971
1
2
AB
HARNESS
CONNECTOR:
COMPONENT
SIDE
CONNECTOR: B-04
B-04(B)
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
AK302970
AB
MB991911
MB991824
MB991827
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