(b)
When the engine coolant temperature displays 102°C
(215.6 ºF) The cooling fan should be running at high speed.
Does the high speed cooling fan run?
No
Yes
Step 4
Turn on the A/C switch, confirm whether the Low-Speed cooling fan runs.
(a)
Turn the ignition switch to "OFF" position.
(b)
Connect scan tool to a datalink connector.
(c)
Select in sequence: Engine / Data List / Engine Coolant
Temperature.
(d)
When the engine coolant temperature is below 90°C
(194 ºF) Start the engine, turn on the A/C switch, cooling fan
should be running at low speed.
Does the low speed cooling fan run?
No
Yes
Step 5
Intermittent Fault. Refer to
.
2.8.7.3 High-Speed Cooling Fan Does Not Run
Note
Before carry out this diagnostic procedures, please Refer to the2.8.7.2
Cooling Fan Circuit Diagnosis, which will facilitate
the Diagnostic.
Step 1
check the high-speed cooling fan power supply .
1
2
3
Cooling Fan Harness Connector CA16
FE02-7801b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cooling fan wiring harness connector CA16.
(c)
Turn the ignition switch to "ON" position.
(d)
Connect scan tool to the datalink connector.
(e)
Select in sequence: Engine / Action Test / Fan 2.
(f)
Make the high-speed relay work.
(g)
Measure voltage between CA16 cooling fan wiring harness
connector terminal No.2 and a reliable ground.
Standard Voltage: 11-14 V
Is the voltage specified Value?
No
Yes
Step 2
Check the cooling fan ground circuit.
Engine
Cooling System JL4G18-D
2-465
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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