Toyota Corolla (E120): Tvip ecu communication circuit

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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 ...

Warning lights
Warning lights inform the driver of malfunctions in the indicated vehicle’s systems. *1: Vehicles without a smart key system: These lights turn on when the engine switch is turned to the “ON” position to indicate that a system check is being performed. They will turn off after the engi ...

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, the ...