Toyota Corolla (E120): Problem symptoms table

Hint

: proceed with troubleshooting of each circuit in the table below.

Symptom

Suspect area
  • When the ignition switch is in the on position, the srs warning light sometimes comes on after approximately 6 seconds.
  •  Srs warning light circuit malfunction (Always lights up, when dtc is not output).
  • Srs warning light always comes on even when dtc is not output.
  • With the ignition switch is in the on position, the srs warning light does not come on.
  • Srs warning light circuit malfunction (does not light up, when ignition switch is turned to on).
  • Although a srs warning light operates normally, dtc or a normal system code is not displayed.
  • Tc terminal circuit
  • Although the terminals tc and cg are not connected, dtc or a normal system code are displayed
    Share this page:

    Other materials:

    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 ...

    Inspection procedure


    Hand–held tester: 1 Check operation of stop light Check if the stop lights go on and off normally when the brake pedal is depressed and released. 2 Inspect stop light switch assy Check the resistance between the terminals when the switch is turned on and off. Standard: ...

    Keys
    The following keys are provided with the vehicle. Type A Keys (without a wireless remote control function) Key number plate Type B Keys (with a wireless remote control function) Operating the wireless remote control function Key number plate Type C Electronic keys Operating the sm ...