![](../../../img/11/ACE00805AC00ENG.png)
![](../../../img/11/ACE00807AC00ENG.png)
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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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![](../../../img/11/ACE02009AB00ENG.png)
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3.Set the timing light to
the terminal No. 3 power supply line (white) of the ignition
coil No. 1. 4.Start the engine and let it run at
idle. 5.Use the M.U.T.-III to measure engine idle
speed and check that it is within the standard
value. Standard value: 720 ± 100
r/min 6.Select No. 11 of the M.U.T.-III
Actuator test. 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 on 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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