A) The temperature of the coolant corresponds to the range of 80-95°C.
b) Lights, radiator fan and all accessories: off.
V) Gearbox: CVT selector lever or automatic transmission in position "R".
G) Set the steering wheel to the straight ahead position.
2. If the tester was not connected earlier before testing, then turn off the ignition and connect the tester to the diagnostic socket under the instrument panel.
3. Start the engine and let it idle.
4. Check that the value of the basic ignition timing corresponds to the nominal value (see section "Checking the ignition timing").
5. Let the engine run at idle speed for 2 minutes.
6. Select the corresponding item on the tester (sub-item No. 22 of Actuator test item for MUT-II) and check the base idle speed.
Base idle speed rating:
- 4G 15-GDI - 650±50 rpm
- 4G93-GDI - 600±50 rpm
- MPI - 700±50 rpm
Note:
- The idle speed is controlled automatically by the idle speed control system.
- For GDI engines, after 4 minutes or more of running the engine at base idle speed, the idle speed will temporarily become 700+50 rpm (4G15) or 750+50 rpm (4G93). This phenomenon is called the mode "purge", while cleaning the exhaust system.
7. If the idle speed does not match the nominal value, check the components of the fuel injection system (see relevant chapter).
8. Turn off the ignition and disconnect the tester.