Mitsubishi Montero (2002-2004). Manual — part 649
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-293
STEP 3. Using scan tool MB991502, check data list item 21:
Engine Coolant Temperature Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991502 to the data reading mode for item
21, Engine Coolant Temperature Sensor.
• The engine coolant temperature and temperature
shown with the scan tool should approximately match.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 4.
NO : Refer to , DTC P0116
− Engine Coolant Temperature
Circuit Range/Performance Problem
, DTC
P0117
− Engine Coolant Temperature Circuit Low
Input
, DTC P0118
− Engine Coolant
Temperature Circuit High Input
.
STEP 4. Using scan tool MB991502, check data list item 25:
Barometric Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991502 to the data reading mode for item
25, Barometric Pressure Sensor.
• When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg.).
• When altitude is 600 m (1,969 feet), 95 kPa (28.1
in.Hg.).
• When altitude is 1,200 m (3,937 feet), 88 kPa (26.0
in.Hg.).
• When altitude is 1,800 m (5,906 feet), 81 kPa. (23.9
in.Hg.)
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 5.
NO : Refer to , DTC P0106
− Barometric Pressure Circuit
Range/Performance Problem
, DTC
P0107
− Barometric Pressure Temperature Circuit
Low Input
, DTC P0108
− Barometric
Pressure Temperature Circuit High Input
.
STEP 5. Check harness connector B-44 at injector
intermediate connector for damage.
Q: Is the harness 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 10.
ACX01539
16-PIN
MB991502
AC
ACX01539
16-PIN
MB991502
AC
AK200949
3
4
7
8
1
2
5
6
B-44(B)
CONNECTOR: B-44
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-294
STEP 6. Check the left bank injector resistance at
intermediate connector B-44.
(1) Disconnect the injector intermediate connector B-44.
(2) Measure the resistance between each injector side
connector terminal.
a. Measure the resistance between terminal No. 8 and No.
2 when measuring No. 2 cylinder injector.
b. Measure the resistance between terminal No. 8 and No.
7 when measuring No. 3 cylinder injector.
c. Measure the resistance between terminal No. 8 and No.
5 when measuring No. 6 cylinder injector.
• Resistance should be between 13 and 16 ohms
[at 20
°C (68°F)].
Q: Is the measured resistance between 13 and 16 ohms [at
20
°C (68°F)]?
YES : Go to Step 8.
NO : Go to Step 7.
STEP 7. Check the left bank injector.
(1) Remove the intake manifold.
(2) Disconnect the left bank injector connector, which deviates
from the standard value at Step 6.
(3) Measure the resistance between injector side connector
terminal No. 1 and No. 2.
Standard value: 13
− 16 ohms [at 20°C (68°F)]
Q: Is the resistance between 13 and 16 ohms [at 20
°C
(68
°F)]?
YES : Repair harness wire between injector intermediate
connector and left bank injector connector because of
harness damage. Then go to Step 10.
NO : Replace the injector. Then go to Step 10.
AK200949
3
4
7
8
1
2
5
6
B-44(B)
CONNECTOR: B-44
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
AK000533
6
3 4
7 8
1 2
5
AK000533
6
3 4
7 8
1 2
5
INJECTOR
INTERMEDIATE
CONNECTOR
AB
AK201292
1
2
B-11(GR)
B-35(GR)
B-33(GR)
CONNECTORS: B-11, B-33, B-35
AB
HARNESS
CONNECTORS:
COMPONENT SIDE
AKX01414AB
INJECTOR SIDE
CONNECTOR
1 2
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-295
STEP 8. Check the fuel pressure.
Refer to GROUP 13A, On-vehicle Service
− Fuel Pressure Test
Q: Are there any abnormalities?
YES : Go to Step 9.
NO : Repair or replace it. Then go to Step 10.
STEP 9. Replace the left bank injector.
(1) Replace the left bank injector.
(2) Carry out a test drive with the drive cycle pattern. Refer to
GROUP 13A, Procedure 2
.
(3) Read in the diagnostic trouble code (DTC).
Q: Is DTC P0175 set?
YES : Replace the PCM. Then go to Step 10.
NO : The inspection is complete.
STEP 10. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
GROUP 13A, Procedure 2
.
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0175 output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK201292
1
2
B-11(GR)
B-35(GR)
B-33(GR)
CONNECTORS: B-11, B-33, B-35
AB
HARNESS
CONNECTORS:
COMPONENT SIDE
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-296
DTC P0181: Fuel Tank Temperature Sensor Circuit Range/Performance
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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