Ignition Timing: Testing and Inspection

1. Before inspection, set the vehicle in the following condition:
- Engine coolant temperature: 80 - 95° C (176 - 203° F)
- Lights, electric cooling fan and all accessories: OFF
- Transaxle: Neutral (P range on vehicles wit A/T)
2. Connect the scan tool to the data link connector.
3. Set up a timing light.
4. Start the engine and run at idle.
5. Check that the idle speed is at approximately 750 r/min.
6. Select the 'item No.17' of the actuator test on the scan tool.
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, check the MFI components.
9. Press the clear key of the scan tool (select force-activating cancel mode), and cancel the actuator test.

NOTE: If it is not cancelled, force-activation continues for 27 minutes. Do not drive the vehicle in this condition, or the engine could be damaged.

10. Check the actual ignition timing is fat the standard value.

Standard value: Approximately 10° BTDC

NOTE:
1. Ignition timing is variable within about ± 7°, even under normal operating.
2. And it is automatically further advanced by about 5° from 10° BTDC at higher altitudes.