Toyota Corolla (E120): Diagnosis circuit

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On–vehicle inspection
1. Inspect refrigerant pressure with manifold gauge set  this is a method in witch the trouble is located by using a manifold gauge set. Read the manifold gauge pressure when the these conditions are established. Test conditions: temperature at the air inlet with the switch set ...

Replacement
Hint: components: 1. Remove rear wheel 2. Remove rear brake drum sub–assy 3. Disconnect skid control sensor wire (w/ abs) 4. Remove rear axle hub & bearing assy lh Remove the 4 bolts and hub & bearing assy lh. 5. Install rear axle hub & bearing assy lh Install t ...

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 ...