Toyota Corolla (E120): Inspection procedure

1 Inspect stop lamp switch assy

2 Check harness and connector(stop lamp switch assy – ecm)

2 Check harness and connector(stop lamp switch assy – ecm)

 

  1. Install the stop lamp switch assy.
  2.  disconnect the ecm connector.
  3.  measure the voltage according to the value(s) in the table below when the brake pedal is depressed and released.

Standard:

Replace ecm

Replace ecm

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    Circuit description
    The throttle position sensor is mounted in the throttle body and detects the throttle valve opening angle. When the throttle valve is fully closed, a voltage of approximately 0.3 To 1.0 V is applied to terminal vta of the ecm. The voltage applied to terminal vta of the ecm increases in pro ...