(b)
Repair the fault indicated by the DTC.
(c)
Clear DTC.
Is air-conditioning clutch working properly?
Yes
System normal
No
Step 2
Repair according to the fault symptom table.
(a)
Repair as the following fault symptom table.
Symptoms
Suspected
Faulty
Components
Repair Procedure
Engine Coolant
Temperature Too Low
1. ECT sensor
malfunction.
2. ECT sensor
wiring harness
malfunction.
3. Engine cooling
system work in
the big loop.
4. ECM
malfunction.
1. Repair the ECT
harness.
2. Replace the
ECT.
3. Replace the
thermostat.
4. Repair the
ECM, if
necessary,
replace it.
Air Pressure Switch
Signal Abnormal
1. Pressure
switch
indicates the
air pressure
signal not
comply with
the Standard
Value:.
2. Pressure
switch wiring
harness
malfunction.
3. ECM
malfunction.
1. Repair the
pressure switch
wiring harness.
2. Repair the
pressure switch.
3. Repair the
ECM, if
necessary,
replace it.
Heating, Ventilation and A/C System
Automatic Air-conditioning
8-25
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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