Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Ecm power source circuit / Circuit description
Toyota Corolla (E120): 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 supplying power to terminal +b of the ecm.
If the ignition switch is turned off, the ecm continues to switch on the efi relay for a maximum of 2 seconds for the initial setting of the isc valve.
Wiring diagram

Other materials:
Engine mechanical
Service data
Torque specification
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Stabilizer bar rear
Replacement
Hint: components:
1. Remove stabilizer bar rear
Remove the 2 bolts, nuts and stabilizer bar.
2. Install stabilizer bar rear
Install the 2 bolts, nuts and stabilizer bar.
Torque: 195 nvm (1,990 Kgf·cm, 144 ft·lbf)
Hint:
install the stabilizer bar so that the ...
Starting the engine
► Automatic transmission or continuously
variable transmission
1 Check that the parking brake is set.
2 Check that the shift lever is set in P.
3 Firmly depress the brake pedal.
4 Turn the engine switch to the “START” position and start the engine.
► Manual transmission
1 Che ...


