Mitsubishi Montero (2002-2004). Manual — part 593
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-69
STEP 13. Check for harness damage between engine
coolant temperature sensor connector B-37 (terminal No.
1) and PCM connector D-135 (terminal No. 98).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.
STEP 14. 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 P116 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK200943
1
2
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-37
B-37(B)
AK200947
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CONNECTOR: D-135
HARNESS CONNECTOR:
COMPONENT SIDE
AB
PCM
D-135(GR)
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-70
DTC P0117: Engine Coolant Temperature Circuit Low Input
.
CIRCUIT OPERATION
• 5-volt voltage is applied to the engine coolant
temperature sensor output terminal (terminal No.
1) from the PCM (terminal No. 98) via the resistor
in the PCM. The ground terminal (terminal No. 2)
is grounded with (terminal No. 96).
• The engine coolant temperature sensor is a neg-
ative temperature coefficient type of resistor. It
has the characteristic that when the engine cool-
ant temperature rises the resistor decreases.
• The engine coolant temperature sensor output
voltage increases when the resistor increases
and decreases when the resistor decreases.
.
YELLO
W
-GREEN
SKY B
ULE
AK201129
ENGINE COOLANT
TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE(PCM)
5 V
98
2
B-37
(MU802406)
96
1
Engine Coolant Temperature Sensor Circuit
1 2
9192
939495
96979899
100
105
113114
115116117
118119120
106
107108109
110111112
101102103
104
D-135
(MU803805)
AK200942
ENGINE COOLANT
TEMPERATURE SENSOR
AK200942AB
B-37(B)
CONNECTOR: B-37
AK201038AF
CONNECTOR: D-135
PCM
D-135(GR)
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-71
TECHNICAL DESCRIPTION
• The engine coolant temperature sensor converts
the engine coolant temperature to a voltage and
output it.
• The PCM checks whether this voltage is within a
specified range.
.
DTC SET CONDITIONS
Check Conditions
• 2 seconds or more have passed since the staring
sequence was completed.
Judgement Criteria
• Engine coolant temperature sensor output volt-
age has continued to be 0.1 volt or lower [corre-
sponding to coolant temperature of 140
°C
(284
°F) or higher] for 2 seconds.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Engine coolant temperature sensor failed.
• Open or shorted engine coolant temperature sen-
sor circuit, or loose connector.
• PCM failed.
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check data list item 21:
Engine Coolant 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
21, Engine Coolant Temperature Sensor.
• The engine coolant temperature and temperature
shown with the scan tool should approximately match.
(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 B-37 at the engine coolant
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 6.
ACX01539
16-PIN
MB991502
AC
AK200943
1
2
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-37
B-37(B)
TSB Revision
DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-72
STEP 3. Check for short circuit to ground between engine
coolant temperature sensor connector B-37 (terminal No.
1) and PCM connector D-135 (terminal No. 98).
Q: Is the harness wire in good condition?
YES : Go to Step 4.
NO : Repair it. Then go to Step 6.
STEP 4. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 6.
AK200943
1
2
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-37
B-37(B)
AK200947
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CONNECTOR: D-135
HARNESS CONNECTOR:
COMPONENT SIDE
AB
PCM
D-135(GR)
AK200947
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CONNECTOR: D-135
HARNESS CONNECTOR:
COMPONENT SIDE
AB
PCM
D-135(GR)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст