Mitsubishi Montero Sport (2004+). Manual — part 180
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-133
STEP 5. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Repair harness wire between engine coolant
temperature sensor connector A-67 (terminal No. 1)
and PCM connector C-90 (terminal No. 44) because
of open circuit. Then go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
STEP 6. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Replace the PCM. Then go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
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
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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-134
STEP 7. Check for continuity at engine coolant
temperature sensor harness side connector A-67.
(1) Disconnect the connector A-67 and measure at the harness
side.
(2) Check for the continuity between terminal No. 2 and
ground.
• Should be less than 2 ohms.
Q: Does continuity exist?
YES : Go to Step 10.
NO : Go to Step 8.
STEP 8. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
AK104023
1
2
A-67(B)
AB
CONNECTOR: A-67
HARNESS
CONNECTOR:
COMPONENT SIDE
AK000235
A-67 HARNESS
CONNECTOR:
COMPONENT SIDE
2 1
AK
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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-135
STEP 9. Check for open circuit between engine coolant
temperature sensor connector A-67 (terminal No. 2) and
PCM connector C-90 (terminal No. 57).
NOTE: Check harness after checking intermediate connector
C-71. If intermediate connector is damaged, repair or replace it.
Refer to GROUP 00E, Harness Connector Inspection
.
Then go to Step 11.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 11.
NO : Repair it. Then go to Step 11.
AK104023
1
2
A-67(B)
AB
CONNECTOR: A-67
HARNESS
CONNECTOR:
COMPONENT SIDE
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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-136
STEP 10. Check the engine coolant temperature sensor.
(1) Disconnect the engine coolant temperature sensor
connector A-67.
(2) Remove the engine coolant temperature sensor.
(3) With the temperature sensing portion of engine coolant
temperature sensor immersed in hot water, check
resistance.
Standard value:
14
− 17 kΩ [at −20°C (−4°F)]
5.1
− 6.5 kΩ [at 0°C (32°F)]
2.1
− 2.7 kΩ [at 20°C (68°F)]
0.9
− 1.3 kΩ [at 40°C (104°F)]
0.48
− 0.68 kΩ [at 60°C (140°F)]
0.26
− 0.36 kΩ [at 80°C (176°F)]
(4) Apply 3M
AAD part number 8731 or equivalent on the
screw section of the engine coolant temperature sensor.
(5) Install the engine coolant temperature sensor, and tighten
to the specified torque.
Tightening torque: 29
± 10 N⋅m (22 ± 7 ft-lb)
Q: Is the resistance at the standard value?
YES : Replace the PCM. Then go to Step 11.
NO : Replace the engine coolant temperature sensor. Then
go to Step 11.
STEP 11. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Procedure 6 −
Other Monitor
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0118 set?
YES : Repeat the troubleshooting.
NO : The procedure is complete.
AK104023
1
2
A-67(B)
AB
CONNECTOR: A-67
HARNESS
CONNECTOR:
COMPONENT SIDE
AKX01622
AKX01623 AB
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