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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.
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3.Set the timing light to
the power supply line (terminal No. 3) of the ignition coil
No.
1. 4.Start the engine and let it run 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<4B11> or 750
r/min<4B12>. 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 13A - 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.
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9.Cancel the actuator test function item No.
11, Basic ignition timing set mode, on
the M.U.T-III. 10.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.
- 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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11.Remove the timing light. 12.Turn
the ignition switch to the "LOCK" (OFF) position and then
disconnect the M.U.T.-III.
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