11A-IGNITION TIMING CHECK

IGNITION TIMING CHECK

1. Before inspection, set the vehicle to the pre-inspection condition.

caution

To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).

Turn the ignition switch to the "LOCK" (OFF) position and then connect scan tool (M.U.T.-III) to the data link connector [Refer to GROUP 13A - Diagnostic Function, How to Connect the Scan Tool (M.U.T.-III)

3. Set the timing light to the power supply line (terminal No. 3) of the ignition coil No. 1.

note	The power supply line is looped and also longer than the other ones.

4. Start the engine and let it run at idle.

5. Select the item No. 2 on scan tool (M.U.T.-III) and measure engine idle speed and check that it is approximately 700 r/min.

6. Select No. 11 (actuator test function) of the scan tool (M.U.T.-III), and set the ignition timing to the basic ignition timing.

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 MFI system (Refer to GROUP 13A - Diagnosis, Symptom Chart

caution

If the test is not cancelled, a forced driving will continue for 27 minutes. Driving under this condition may damage the engine.

9. Cancel the actuator test function item No. 11, Basic ignition timing set mode, on scan tool (M.U.T.-III)

10. Check that ignition timing is at the standard value.

Standard value: Approximately 8° BTDC

11. Remove the timing light.

12. Turn the ignition switch to the "LOCK" (OFF) position and then disconnect the scan tool (M.U.T.-III).