IGNITION TIMING CHECK

1.Before inspection, set the vehicle to the pre-inspection condition. 2.Turn the ignition switch to the "LOCK" (OFF) position and then connect the M.U.T.-III to the diagnosis connector.

3.Set the timing light to the power supply line (black-white) of the No. 1 ignition coil. 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. 3 on M.U.T.-III and measure engine idle speed and check that it is within the standard value. Standard value: 750 ± 100 r/min 6.Select No. 7 of the M.U.T.-III Actuator test. 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 MPI system (Refer to GROUP 13B - Troubleshooting - Inspection chart for trouble symptom ). caution If the test is not cancelled, a forced driving will continue for 27 minutes. Driving under this condition may damage the engine. 9.Select a forced driving cancel mode to release the Actuator test. 10.Check that ignition timing is at the standard value. Standard value: approximately 10° BTDC note The ignition timing may fluctuate within ± 7° BTDC. This is normal. In higher altitude, the ignition timing is more advanced than the standard value by approximately 5°. Wait till approximately 1 minute passes after the engine started, and check the ignition timing when the engine stabilized. 11.Remove the timing light. 12.Turn off the ignition switch and then disconnect the M.U.T.-III.