|
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.
|
|
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.
|
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.
|
11.Remove the timing light. 12.Turn the ignition switch to the "LOCK" (OFF) position and then disconnect the M.U.T.-III.
|