Toyota Corolla (E120): Inspection procedure

Circuit description

Open/B+ short circuit in abs motor relay circuit

Other materials:

Engine mechanical
Preparation Sst Recomended tools Ssm Equipment Exhaust Preparation Equipment ...

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 ...

Terminals of ecu
1. Inspect integration relay Disconnect the connector and check the continuity of each terminal of the disconnected connector. Standard : If the result is not as specified, the vehicle’s side may malfunction. Reconnect the connector and check each terminal. Standard: If ...