Mitsubishi Montero (2002-2004). Manual — part 686
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-441
STEP 2. Measure the signal voltage at fuel tank differential
pressure sensor connector G-05.
(1) Tumble the second seat.
(2) Remove the service hole cover (upper) and packing.
(3) Remove the service hole cover (lower) and packing.
(4) Disconnect fuel tank differential pressure sensor connector
G-05.
(5) Connect special tool MB991658 between fuel tank
differential pressure sensor connector G-05 terminals 1, 2
and 3.
(6) Turn the ignition switch to the "ON" position.
(7) Remove the fuel cap.
(8) Measure the voltage between fuel tank differential pressure
sensor connector G-05 terminal 1 and ground.
• The voltage should measure between 2.0 and 3.0 volts.
(9) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 2.0 and 3.0 volts?
YES : Go to Step 10.
NO : Go to Step 3.
STEP 3. Measure the 5-volt reference signal at fuel tank
differential pressure sensor connector G-05.
(1) Disconnect fuel tank differential pressure sensor connector
G-05.
(2) Connect special tool MB991658 between fuel tank
differential pressure sensor connector G-05 terminals 1, 2
and 3.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between fuel tank differential pressure
sensor connector G-05 terminal 3 and ground.
• The voltage should measure 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 4.
ACX00218
CONNECTOR : G-05
AS
G-05 (B)
SERVICE HOLE (UPPER)
G-05 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
3
SERVICE HOLE (LOWER)
AC002081AB
MB991658
FUEL TANK DIFFERENTIAL
PRESSURE SENSOR
ACX00218
CONNECTOR : G-05
AR
G-05 (B)
SECOND SEAT UNDER
SERVICE HOLE
G-05 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
3
AC002081AB
MB991658
FUEL TANK DIFFERENTIAL
PRESSURE SENSOR
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-442
STEP 4. Measure the 5-volt reference signal at PCM
connector D-135 by backprobing.
(1) Do not disconnect PCM connector D-135.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between PCM connector D-135
terminal 97 and ground by backprobing.
• The voltage should measure 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 6.
NO : Go to Step 5.
STEP 5. Check PCM connector D-135 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 14.
NO : Repair or replace the faulty component. (Refer to
GROUP 00E, Harness Connector Inspection
AC203993
CONNECTOR: D-135
AC
D-135 (GR)
PCM
94
93
95
96 97 98 99 100
92
91
101 102 103
104
105 106
107 108 109
110 111 112
113 114
115 116 117
118 119 120
AC204160 AB
D-135 HARNESS CONNECTOR:
HARNESS SIDE
AC203997
CONNECTOR: D-135
AB
D-135 (GR)
PCM
D-135 HARNESS CONNECTOR:
HARNESS SIDE
94
93
95
96 97 98 99 100
92
91
101 102103
104
105 106
107 108 109
110 111 112
113 114
115 116 117
118 119 120
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-443
STEP 6. Check intermediate connectors D-112, E-111 and
F-07, and fuel tank differential pressure sensor connector
G-05 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 7.
NO : Repair or replace the faulty component. (Refer to
GROUP 00E, Harness Connector Inspection
AC203998
CONNECTOR: D-112
AC
D-112
D-112 HARNESS
CONNECTOR:
COMPONENT SIDE
38
28
16
33
22
10
31
19
7
1
18
30
29
17
5
6
21
20
32
8
2
9
25
13
3
24
23
34 35
11 12
27
26
36 37
14
4
15
AC203999
CONNECTOR: E-111
AC
E-111
E-111 HARNESS
CONNECTOR:
COMPONENT SIDE
38
12 13
11
26
14
1
20
6
23 24 25
37
31
36
30
10
9
21 22
35
8
7
34
17
29
18 19
5
4
15 16
33
28
32
27
3
2
AC204000
CONNECTOR: F-07
AC
F-07 (B)
F-07 HARNESS
CONNECTOR:
COMPONENT SIDE
8
4
3
2
1
5 6 7
ACX00218
CONNECTOR : G-05
AR
G-05 (B)
SECOND SEAT UNDER
SERVICE HOLE
G-05 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
3
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-444
STEP 7. Check the harness wires between PCM connector
D-135 terminal 97 and fuel tank differential pressure
sensor connector G-05 terminal 3 for damage.
Q: Are the harness wires in good condition?
YES : It can be assumed that this malfunction is intermittent.
(Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points
− How to Cope with
Intermittent Malfunction
NO : Repair the damaged harness wires. Go to Step 15.
AC203997
CONNECTOR: D-135
AB
D-135 (GR)
PCM
D-135 HARNESS CONNECTOR:
HARNESS SIDE
94
93
95
96 97 98 99 100
92
91
101 102103
104
105 106
107 108 109
110 111 112
113 114
115 116 117
118 119 120
ACX00218
CONNECTOR : G-05
AR
G-05 (B)
SECOND SEAT UNDER
SERVICE HOLE
G-05 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
3
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