3. Schematic:
Engine Coolant Temperature Sensor
Engine
Control
Module
FE02-5029b
4. Diagnostic Steps:
Warning!
Refer to "Cooling System Servicing Warning" in "Warnings and Notices".
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Note
It is not recommended at any time to use flammable anti-freezer, such as alcohol. Combustible anti-freezer can cause
serious fires.
Step 1
Initial Inspection
(a)
Check the engine coolant temperature sensor whether there
is evidence of corrosion, as well as the engine coolant leaking
through the sensor.
(b)
Check the cooling system whether the engine coolant level
is correct.
Next
Step 2
Measure engine coolant temperature sensor resistance.
2-98
Control System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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