1
2
3
Cooling Fan Harness Connector CA16
FE02-7807b
(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 1.
(f)
Make low-speed relay work.
(g)
Measure voltage between CA16 cooling fan wiring harness
connector terminal No.1 and a reliable ground.
Standard Voltage: 11-14 V
Is the voltage specified value?
No
Yes
Step 2
Check the cooling fan ground circuit.
1
2
3
Cooling Fan Harness Connector CA16
FE02-7802b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the cooling fan wiring harness connector CA16.
(c)
Measure resistance between cooling fan wiring harness
connector CA16 terminal No.3 and a reliable ground.
Standard Resistance: Less than 1 Ω
Is the resistance specified value?
No
CA16 terminal No.3 poor connection to
ground. Inspect and repair the faulty parts.
Yes
Step 3
Replace the cooling fan assembly.
Step 4
Use scan tool "Action Test" to drive fan 1. Does the low speed relay work?
No
Yes
Step 5
Check relay B terminal No.87 power supply.
Engine
Cooling System JL4G18-D
2-469
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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