Mitsubishi Montero (2002-2004). Manual — part 653
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-309
STEP 4. Check for short circuit to ground between fuel
tank temperature sensor connector G-03 and PCM
connector D-134.
NOTE: Check harness after checking intermediate connector
D-111, E-113 and F-07. If intermediate connector are damaged,
repair or replace it. Refer to GROUP 00E, Harness Connector
Inspection
. Then go to Step 5.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 5.
NO : Repair it. Then go to Step 5.
STEP 5. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
GROUP 13A, Procedure 6
− Other Monitor
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0182 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK200959
1
2
3
AB
CONNECTOR: G-03
G-03(B)
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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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-310
DTC P0183: Fuel Tank Temperature Sensor Circuit High Input
POWERTRAIN CONTROL
MODULE (PCM)
Fuel Tank Temperature Sensor Circuit
2
16
3
2
7
1
BLA
CK
BLA
CK
LIGHT
GREEN-
RED
G-03
MU802337
1 2 3
AK201139
81
FUEL TANK TEMPERATURE SENSOR
(INTEGRATED IN FUEL LEVEL SENSOR)
4
17
1
12 13 14
18
30
41
34
3
16
10
6 7
19
31
42
20
32
43
21
33
25
24
26
36
35
37
29
28
15
27
38
8 9
39 40
11
2
22
5
23
D-111
8
7
6
5
1 2 3 4
F-07
MU802609
11
1
9 10
13
2
12
3 4
7
5
14
6
8
E-113
5 V
LIGHT
GREEN-
RED
LIGHT
GREEN-
RED
LIGHT GREEN-
RED
61
656667686970 717273
74757677787980 8182
8384
858687
8889
62
6364
D-134
(MU803804)
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-311
.
CIRCUIT OPERATION
• 5-volt voltage is applied to the fuel tank tempera-
ture sensor output terminal (terminal No. 3) from
the PCM (terminal No. 81) via the resistor in the
PCM.
• The fuel tank temperature sensor output voltage
increases when the resistance increases and
decreases when the resistance decreases. The
ground terminal (terminal No. 2) is grounded to
the vehicle body.
.
TECHNICAL DESCRIPTION
• The fuel tank temperature sensor converts the
fuel tank temperature to a voltage.
• The PCM detects the fuel tank temperature in the
fuel tank with this output voltage.
.
DTC SET CONDITIONS
Check Conditions
• 2 seconds or more have passed since the start-
ing sequence was completed.
Judgement Criteria
• Sensor output voltage has continued to be 4.6
volts or higher for 2 seconds.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Fuel tank temperature sensor failed.
• Open or shorted fuel tank temperature sensor cir-
cuit, or loose connector.
• PCM failed.
AK201038
CONNECTOR: D-134
AD
PCM
D-134(GR)
AK201053
E-113
AB
CONNECTOR: E-113
AK201055
CONNECTOR: D-111
D-111
AB
AK201040 AB
CONNECTOR: G-03
G-03(B)
FUEL TANK TEMPERATURE SENSOR
(INTEGRATED IN FUEL
LEVEL SENSOR)
AK201054
F-07(B)
AB
CONNECTOR: F-07
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-312
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check data list item
4A: Fuel Tank Temperature Sensor.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the data reading mode for item
4A, Fuel Tank Temperature Sensor.
• Approximately the same as the ambient air temperature
when the engine is cooled.
(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 : Go to Step 2.
STEP 2. Check connector G-03 at the fuel tank temperature
sensor for damage.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
ACX01539
16-PIN
MB991502
AC
AK200959
1
2
3
AB
CONNECTOR: G-03
G-03(B)
HARNESS
CONNECTOR:
COMPONENT SIDE
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