Toyota Corolla (E170): Engine compartment

Vehicle interior

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    Circuit description
    The shift solenoid valve sl is turned ”on” and ”off” by signals from the ecm in order to control the hydraulic pressure operation, the lock–up relay valve, which then the controls operation of the lock–up clutch. Fail safe function: if the ecm detects a malfunction, it turns the ...

    Symptom simulation
    Hint: the most difficult case in troubleshooting is when no symptoms occurs. In such cases, a thorough customer problem analysis must be carried out. Then the same or similar conditions and environment in which the problem occurred in the customer’s vehicle should be simulated. No matter ho ...

    Standard bolt
    How to determine bolt strength Specified torque for standard bolts How to determine nut strength *: Nut with 1 or more marks on one side surface of the nut. Hint: use the nut with the same number of the nut strength classification or the greater than the bolt strength classificati ...