Next
Step 2
Check the engine coolant temperature sensor signal.
(a)
Turn the ignition switch to "OFF" position.
(b)
Connect scan tool to the datalink connector.
(c)
Turn off A/C switch.
(d)
Turn the ignition switch to "ON" position.
(e)
Select in sequence: Engine / Data List / Engine Coolant
Temperature.
(f)
Observe the engine coolant temperature sensor displayed
temperature, when the engine is completely cooled down, the
displayed temperature should be slightly higher than the
ambient temperature.
Is displayed temperature normal?
No
Coolant temperature sensor or circuit
malfunction. Refer to the
Yes
Step 3
Remove and check the cooling fan low-speed relay, cooling fan still running?
No
Yes
Step 4
Check and repair circuit between high speed cooling fan relay and cooling fan wiring harness connector
CA16.
Engine
Engine Cooling System JL4G15-D
2-851
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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