Toyota Corolla (E120): Problem symptoms table

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.

On–vehicle inspection

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    Check dlc3
    The vehicle’s ecm uses the iso 9141–2 for communication protocol. The terminal arrangement of the dlc3 complies with sae j1962 and matches the iso 9141–2 format. Hint: if the display shows unable to connect to vehicle when you have connected the cable of the obd ii scan tool or the h ...

    Overhaul
    Hint: overhaul the rh side by the same procedure as the lh side. 1. Remove front wheel 2. Drain brake fluid Notice: wash the brake fluid off immediately if it comes into contact with any painted surface. 3. Remove front disc brake cylinder sub–assy Remove the union bolt and gasket ...

    Inspection procedure
    1 Inspect transmission wire(s1) Disconnect the transmission wire connector from the transaxle.  measure the resistance according to the value(s) in the table below. Standard: 2 Check harness and connector(transmission wire – ecm) Connect the transmission connec ...