Diagnostics

Inspection procedure

2steps
~12min
1/5difficulty
Done 0 of 2
1 Inspect stop lamp switch assy
  1. Check that the stop light lights up when brake pedal is depressed and turns off when the brake pedal is released.
2 Inspect skid control ecu terminal voltage(stp terminal)
2 Inspect skid control ecu terminal voltage(stp terminal)
Toyota Corolla. Nspect skid control ecu terminal voltage
  1. Disconnect skid control ecu connector.
  2. measure voltage between terminal stp (16) and gnd (1, 23) of skid control ecu harness side connector when the brake pedal is depressed.

    Voltage: 10 – 14 v

    3 Check harness and connector(stop light switch – skid control
3 Check harness and connector(stop light switch – skid control ecu)
  1. Check for open and short circuit in harness and connector between stop light switch and skid control ecu
Proceed to next circuit inspection shown on problem symptoms table
Proceed to next circuit inspection shown on problem symptoms table 4 Check harness and connector(stop light circuit)
  1. Check for open and short circuit in harness and connector of the stop light circuit
Repair or replace harness or connector
Repair or replace harness or connector

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.