2.8.7 Diagnostic Information and Procedures
2.8.7.1 Diagnosis Description
Get familiar with the system functions and operation before start system diagnostics, so
that it will help to determine the correct diagnostic steps, more importantly, it will also help to determine whether the customer
described situation is normal.
2.8.7.2 Cooling Fan Circuit Diagnosis
Diagnostic Tips:
–
If a customer complains an overheating fault, verify whether it is because the engine coolant boiling or the engine coolant
temperature gage is indicating overheating. If the engine is overheated, but the cooling fan still runs normally, check the engine
cooling system.
–
If the underhood fuse EF29 fuses immediately after installation, check whether the cooling fan high and low speed relay and
cooling fan motor wire is short to ground. If the fuse fuses immediately after the engine control module pull-in, then the cooling
fan motor may be faulty.
–
When the air-conditioning system is running, the engine control module controls the cooling fan running at low speed. When the
air-conditioning high pressure reaches 1,520 kPa (220.5 psi), the engine cooling fan control module will switch the cooling fan
from low to high speed. When the air-conditioning high pressure drops back to 1,450 kPa (210.3 psi), the cooling fan will return
low-speed.
–
Scan tool can be used in the "Function Test" to drive high or low speed cooling fan relay pull-in. Check whether the fan works
normally in order to quickly determine the fault.
Note
Before carry out this diagnostic procedures, check whether the underhood fuse EF29 is normal and main relay is
working properly. When use scan tool "Action Test", make sure the scan tool communication with ECM is normal.
Step 1
Verify the fault.
Next
Step 2
Confirm whether the Low-Speed cooling fan runs.
(a)
Turn the ignition switch to "OFF" position.
(b)
Connect scan tool to the datalink connector.
(c)
Start the engine to normal working temperature.
(d)
Turn off the A/C switch.
(e)
Select in sequence: Engine / Data List / Engine Coolant
Temperature.
(f)
When the engine coolant temperature displays 95°C
(203 ºF) the cooling fan should be running at low speed.
Does the low speed cooling fan run?
No
Refer to
Yes
Step 3
Confirm whether the high-speed cooling fan runs.
(a)
Turn off the A/C switch.
2-464
Cooling System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Содержание EC715 2009
Страница 4: ......
Страница 312: ...2 3 4 5 Fuel Injectors FE02 2022b 2 230 Fuel System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 330: ...Next Step 10 End 2 248 Fuel System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 516: ...2 7 4 3 Front Muffler Assembly FE02 2032b 2 434 Exhaust System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 517: ...2 7 4 4 Rear Muffler Assembly FE02 2033b Engine Exhaust System JL4G18 D 2 435 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 519: ...2 7 4 6 Front Muffler Heat Shield FE02 2034b Engine Exhaust System JL4G18 D 2 437 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1164: ......
Страница 1257: ...Next Step 9 System normal Brake System ABS TCS EBD ESP 6 93 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1278: ...6 7 8 Special Tools and Equipment 6 7 8 1 Trigger Tool FE06 1007b 6 114 TPMS Brake System EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1412: ...9 2 6 4 Warning lamp Always On Schematic 9 14 Airbag System Safety Protection Device EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1703: ...Rear Wiper Motor Hatchback FE11 2009c Body Electric Wipers Washers System 11 219 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1704: ...Washer Fluid Tank Sedan FE11 2010b 11 220 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1705: ...Washer Fluid Tank Hatchback FE11 2010c Body Electric Wipers Washers System 11 221 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1706: ...Rear Washer Nozzle Hatchback FE11 2011c 11 222 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1734: ...Next Step 13 System normal 11 250 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1860: ...BCM FE11 0803b 11 376 Remote Anti theft System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1951: ...Reverse Radar Control Module FE11 1207b Body Electric Reverse Radar 11 467 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1954: ...16 R Control Module Power Supply Gear In Reverse 12 V 11 470 Reverse Radar Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 2008: ......
Страница 2104: ...FE12 0085c 2 Install the hatchback seal 12 96 Interior Trim Body Sheet Metal and Painting EC718 EC718RV EC715 EC715RV 10 2009 ...