Mitsubishi Montero (2002-2004). Manual — part 579
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-13
STEP 6. Measure the sensor supply voltage at volume
airflow sensor harness side connector B-48.
(1) Disconnect the connector B-48 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 3 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 9.
NO : Go to Step 7.
STEP 7. Check connector D-134 at PCM for damage.
Q: Is the harness 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 13.
AK200937
3
4
5
1
2
6
7
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-48
B-48(B)
AKX01406 AJ
B-48 HARNESS CONNECTOR:
COMPONENT SIDE
1
2
3
4
5
6
7
AK201166
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CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-14
STEP 8. Check for short circuit to ground between volume
airflow sensor connector B-48 (terminal No. 3) and PCM
connector D-134 (terminal No. 63).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 13.
NO : Repair it. Then go to Step 13.
AK200937
3
4
5
1
2
6
7
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-48
B-48(B)
AK201166
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CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-15
STEP 9. Check the continuity at volume airflow sensor
harness side connector B-48.
(1) Disconnect the connector B-48 and measure at the harness
side.
(2) Check for the continuity between terminal No. 5 and
ground.
• Should be less than 2 ohms.
Q: Is the continuity normal?
YES : Go to Step 12.
NO : Go to Step 10.
STEP 10. Check connector D-134 at PCM 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 13.
AK200937
3
4
5
1
2
6
7
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-48
B-48(B)
AKX01409
1
2
3
4
5
6
7
B-48 HARNESS CONNECTOR:
COMPONENT SIDE
AL
AK201166
61
62
63
64
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85
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87
80
72
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89
CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-16
STEP 11. Check for open circuit and harness damage
between volume airflow sensor connector B-48 (terminal
No. 5) and PCM connector D-134 (terminal No. 88).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 13.
NO : Repair it. Then go to Step 13.
STEP 12. Check connector D-134 at PCM for damage.
Q: Is the connector in good condition?
YES : Replace the volume airflow sensor. Then go to Step
13.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 13.
AK200937
3
4
5
1
2
6
7
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-48
B-48(B)
AK201166
61
62
63
64
65
66
67
68
69
70
71
76
77
78
79
85
86
87
80
72
73
74
75
81
82
83
84
88
89
CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK201166
61
62
63
64
65
66
67
68
69
70
71
76
77
78
79
85
86
87
80
72
73
74
75
81
82
83
84
88
89
CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
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