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1.Before inspection, set the vehicle to the pre-inspection condition.
2.Turn the ignition switch to "LOCK" (OFF) position.
3.Connect the M.U.T.-III to the diagnosis connector.
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4.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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5.Start the engine and let it run at idle.
6.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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7.Check the idle speed.
Standard value: 750 ± 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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8.If the idle speed is outside the standard value, inspect the MPI system (Refer to GROUP 13A - Troubleshooting - Inspection Chart for Trouble Symptoms  ).
9.Remove the timing light.
10.Turn the ignition switch to "LOCK" (OFF) position and then disconnect the M.U.T.-III.
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