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1.Before inspection, set the vehicle to the pre-inspection condition.
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2.Turn the ignition switch to the "LOCK" (OFF) position and then connect the M.U.T.-III
to the diagnosis connector.
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3.Set the timing light to the power supply line (terminal No. 3) of the ignition coil No.
1.
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The power supply line is looped and also longer than the other ones.
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4.Start the engine and let it run at idle.
5.Check that ignition timing is at the standard value.
Standard value: approximately 10° BTDC
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- The ignition timing may fluctuate within ±7°. 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.
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6.Check the idle speed.
Standard value: 700 ± 100 r/min
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- The idle speed is controlled automatically by the idle speed control system.
- When using the M.U.T.-III, select item No. 2 and take a reading of the idle speed.
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7.If the idle speed is outside the standard value, inspect the MPI system (Refer to
GROUP 13A - Troubleshooting - Inspection Chart for Trouble Symptoms  ).
8.Turn the ignition switch to the "LOCK" (OFF) position and then remove the M.U.T.-III.
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