Celica ST Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1998)
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Malfunction Indicator Lamp: Description and Operation
OBD II regulations require that the vehicle's on-board computer lights up the Malfunction Indicator Lamp (MIL) on the instrument panel when the
computer detects a malfunction in the computer itself or in drive system components which affect vehicle emissions. In addition to the MIL
lighting up when a malfunction is detected, the applicable Diagnostic Trouble Code (DTC) prescribed by SAE J2012 are recorded in the ECM
memory.
If the malfunction does not reoccur in 3 trips, the MIL goes off automatically but the DTCs remain recorded in the ECM memory.
