IDLE MIXTURE CHECK

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 a 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.Check that ignition timing is at the standard value. Standard value: approximately 10° BTDC 6.Run the engine at 2,500 r/min for 2 minutes. 7.Set the CO, HC tester. 8.Check the CO contents and the HC contents at idle. Standard value CO contents: 0.5% or less HC contents: 100 ppm or less 9.If there is a deviation from the standard value, check the following items: 10. Diagnosis output Fuel pressure Injector Ignition coil, spark plug cable, spark plug EGR control system Evaporative emission control system Compression pressure note Replace the three way catalyst when the CO and HC contents are not within the standard value, even though the result of the inspection is normal on all items. 11.Remove the timing light 12.Turn the ignition switch to the "LOCK" (OFF) position and then disconnect the M.U.T.-III.