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 (Refer to GROUP 00 - Precautions Before Service - M.U.T.-III Sub Assembly ).

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 M.U.T.-III and measure engine idle speed and check that it is approximately 700 r/min <Except Euro5> or approximately 750 r/min <Euro5>.
6.Select No. 11 (actuator test function) of 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 13A - Troubleshooting - Inspection Chart for Trouble symptoms ).
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 8° BTDC
11.Remove the timing light.
12.Turn the ignition switch to the "LOCK" (OFF) position and then disconnect the M.U.T.-III.