Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    Overhaul
    1. Remove oil pump relief valve Remove the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve.  Oil pump relief valve plug  oil pump relief valve spring  oil pump relief valve 2. Inspect oil pump assy Remove 3 screws and o ...

    Inspection procedure
    Hint: read freeze frame data using the hand–held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, th ...

    Removal & installation and disassembly & re
    1. Remove bench type rear seat cushion assy (, 72–8) 2. Remove rear floor service hole cover 3. Work for preventing gasoline from spilling out  start the engine.  after the engine has stopped on the its own, turn the ignition switch to lock. 4. Disconnect fuel tank main tu ...