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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 (Refer to GROUP 00 -
Precautions Before Service, M.U.T.-III ).
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![](../../../img/11/ACF01013AB00ENG.png)
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3.Set the timing light to
the timing pick-up loop (white) of No. 1 ignition
coil. 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
note |
The ignition timing may
fluctuate within ±7°. This is
normal.
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note |
In higher altitude, the
ignition timing is more advanced than the
standard value by approximately
5°.
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note |
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: 650 ± 100 r/min
note |
The idle speed is controlled
automatically by the idle speed control
system.
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note |
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 13B - Troubleshooting - Inspection chart
for trouble symptom ). 8.Remove
the timing light. 9.Turn the ignition switch to
the "LOCK" (OFF) position and then disconnect the
M.U.T.-III.
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