Toyota Corolla (E120) 2002–2008 Repair Manual / Supplemental restraint system

Toyota Corolla (E120): Supplemental restraint system

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Monitor description
The battery supplies electricity to the ecm even when the ignition switch is off. This electricity allows the ecm store data such as dtc history, freeze frame data, fuel trim values, and other data. If the battery voltage falls below a minimum level, the ecm will conclude that there is a fault ...

Basic Audio Operations
Basic audio operations and functions common to each mode are explained in this section. Operating the multimedia system Random playback Select to change on/off. Repeat play Select to change on/off. ■Using cellular phones Interference may be heard through the multimedia system' ...

Circuit description
When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...