Toyota Corolla (E120): Inspection procedure

1 Input signal check

  1. See input signal check on page 05–745.
  2. check indicator light operation when driving with vehicle speed above 40 km/h (25 mph), and with vehicle speed below 40 km/h (25 mph).

    Ok: vehicle speed above 40 km/h (25 mph): indicator light blinks vehicle speed below 40 km/h (25 mph): indicator light stays on

2 Check speedometer circuit

2 Check speedometer circuit

3 Check harness and connector(between cruise control ecu assy

3 Check harness and connector(between cruise control ecu assy and combination meter assembly)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and combination meter assembly

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

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    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 ...

    Circuit description
    In the diagram below, when the engine is cranked, current flows from terminal st2 of the ignition switch to the starter relay coil and also current flows to terminal sta of the ecm (sta signal). When the sta signal and ne signal are input to the ecm, tr is turned on, current flows to the c ...

    Terminals of ecu
    1. Inspect integration relay Disconnect the connector from the integration relay. check the continuity between each terminal of the disconnected connector and the body ground, as shown in the illustration and table. Standard: If the result is not as specified, the vehicle’s ...