Corolla LE Sedan L4-1762cc 1.8L DOHC MFI (1998)
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 Codes (DTC) prescribed by SAE J2012 are recorded in the ECM memory.
If the malfunction does not recur in 3 trips, the MIL goes off but the DTC remain recorded in the ECM memory.
