Mitsubishi Montero Sport (2004+). Manual — part 261
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-457
STEP 3. Check connector A-43 at the crankshaft position
sensor 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 go to Step 20.
STEP 4. Using scan tool MB991958, check data list item 22:
Crankshaft Position Sensor.
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 data reading mode for item
22, Crankshaft Position Sensor.
• The tachometer and engine speed indicated on the scan
tool should much.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
NO : Replace the PCM. Then go to Step 20.
AK200494
1
2
3
A-43(B)
AB
CONNECTOR: A-43
HARNESS
CONNECTOR:
COMPONENT SIDE
CRANKSHAFT
POSITION
SENSOR
AK303629AB
MB991911
MB991827
MB991824
16-PIN
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-458
STEP 5. Check connector A-43 at the crankshaft position
sensor 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 go to Step 20.
AK200494
1
2
3
A-43(B)
AB
CONNECTOR: A-43
HARNESS
CONNECTOR:
COMPONENT SIDE
CRANKSHAFT
POSITION
SENSOR
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI)
13A-459
STEP 6. Measure the sensor supply voltage at crankshaft
position sensor harness side connector A-43.
(1) Disconnect the connector A-43 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 2 and ground.
• Voltage should be between 4.8 and 5.2 volts
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?
YES : Go to Step 11.
NO : Go to Step 7.
AK200494
1
2
3
A-43(B)
AB
CONNECTOR: A-43
HARNESS
CONNECTOR:
COMPONENT SIDE
CRANKSHAFT
POSITION
SENSOR
AKX01416 AO
2 1
3
A-43 HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI)
13A-460
STEP 7. Measure the sensor supply voltage at PCM
connector C-90 by backprobing.
(1) Do not disconnect the PCM connector C-90.
(2) Disconnect the crankshaft position sensor connector A-43.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between terminal No. 45 and ground
by backprobing.
• Voltage should be between 4.8 and 5.2 volts.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?
YES : Go to Step 8.
NO : Go to Step 9.
STEP 8. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Repair it because of open circuit between crankshaft
position sensor connector A-43 (terminal No. 2) and
PCM connector C-90 (terminal No. 45). Then go to
Step 20.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 20.
AK103762
42
43
48
49
50
51
52
53
54
55
56
57
46 45 44
58
59
60
61
62
63
64
65
66
47
41
AB
CONNECTOR: C-90
C-90(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01544
AKX01544
41
AG
C-90 HARNESS CONNECTOR:
HARNESS SIDE
42 43
44 45 46
47 48 49 50 51 52 53 54 55 56 57
58 59
60 61 62 63
64 65 66
AK103762
42
43
48
49
50
51
52
53
54
55
56
57
46 45 44
58
59
60
61
62
63
64
65
66
47
41
AB
CONNECTOR: C-90
C-90(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
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