Specifications

ENGINE <4G9-GDI> – On-vehicle Service
11A-9
IGNITION TIMING CHECK
1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Connect the MUT-II to the diagnosis connector.
3. Set the timing light to the condenser of the No.1 ignition
coil power supply line (terminal No.3).
4. Start the engine and run at idle.
5. Check that engine idle speed is within the standard value.
Standard value: 600 ± 50 r/min
NOTE
After 4 minutes or more have passed in the idle running
condition, the idle speed will become 750 r/min.
6. Select No.17 of the MUT-II Actuator test.
NOTE
At this time, the engine speed will become approximately
750 r/min.
7. Check that basic ignition timing is within the standard value.
Standard value: 5_ BTDC ± 3_
8. If the basic ignition timing is outside the standard value,
inspect the GDI system while referring to GROUP 13A
– Troubleshooting.
9. Press the MUT-II clear key (Select a forced driving cancel
mode) to release the Actuator test.
Caution
If the test is not cancelled, a forced driving will continue
for 27 minutes. Driving under this condition may
damage the engine.
10. Check that ignition timing is at the standard value.
Standard value: approx. 16_BTDC
NOTE
(1) The ignition timing will become approximately 5_BTDC
after more than 4 minutes have passed since the basic
ignition timing set mode was released.
(2) The ignition timing may fluctuate within ±7_BTDC.
This is normal.
(3) In higher altitude, the ignition timing is more advanced
than the standard value by approximately 5 degree.
MUT-II
No.1 ignition coil
Condenser