Mitsubishi FUEL Manual page 107

MUT-II Data list
21 Engine coolant temperature
sensor
OK: When the engine is cold,
the temperature is roughly
the same as ambient tem-
perature. If warm, it is 80 -
120_C.
NG
Measure at engine coolant
temperature sensor connector B-33.
D Disconnect the connector and
measure at the harness side.
D Resistance between terminals 1
and 2
OK: At 20_C of engine coolant
temperature: 2.1 - 2.7 kW
At 80_C of engine coolant
temperature: 0.26 - 0.36
kW
OK
Check the following connector:
B-33
OK
Measure at engine coolant
temperature sensor connector B-33.
D Disconnect the connector and
measure at the harness side.
(1) Voltage between terminal 1 and
earth
(Ignition switch: ON)
OK: 4.8 - 5.2 V
(2) Resistance between terminal 2
and earth
OK: 2 W or less
OK
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MPI <6A1> -
OK
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
Replace
NG
Repair
(1) NG
Measure at engine-ECU connector
C-167.
D Measure the voltage at the
engine-ECU terminal.
D Disconnect connector B-33.
D Ignition switch: ON
D Voltage between terminal 44 and
earth
OK: 4.8 - 5.2 V
Check the following connector:
C-167
Check the harness wire between the
engine coolant temperature sensor
and the engine-ECU.
Check the trouble symptoms.
(2) NG
Check the following connector:
C-167
Check the harness wire between the
engine coolant temperature sensor
and the engine-ECU.
Check the trouble symptoms.
Troubleshooting
OK
NG
NG
OK
NG
OK
NG
NG
OK
NG
OK
NG
13A-107
Check the following connector:
C-167
OK NG
Repair
Check the harness wire between the
engine coolant temperature sensor
and the engine-ECU, and repair if
necessary.
Repair
Repair
Replace the engine-ECU.
Repair
Repair
Replace the engine-ECU.