IGNITION TIMING CHECK

2.Turn the ignition switch to the "LOCK" (OFF) position and then connect the M.U.T.-III to the diagnosis connector (Refer to GROUP 00 - Precautions Before Service, M.U.T.-III ).

3.Set the timing light to the timing pick-up loop (white) of No. 1 ignition coil. 4.Start the engine and run it at idle. 5.Select item No. 2 on the M.U.T.-III to measure engine idle speed and check that it is approximately 650 r/min. 6.Select item No. 11 (actuator test function) on the 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 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.Cancel the actuator test function item No. 11, Basic ignition timing set mode, on M.U.T.-III. 10.Check that ignition timing is at the standard value. Standard value: approximately 10° BTDC note Ignition timing fluctuates about ±7°, even under normal operating condition. note It is automatically further advanced by about 5° from 10° BTDC at higher altitudes. note 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 the ignition switch to the "LOCK" (OFF) position and then remove the M.U.T.-III.