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
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    Inspection procedure
    1 Inspect fuse(stop) Turn the ignition switch to off.  remove the stop fuse from the instrument panel j/b.  check continuity of the stop fuse. Ok: continuity 2 Inspect stop lamp switch assy Disconnect the stop lamp switch assy connector. check continuity betw ...

    Electronic control
    Removal and installation of battery terminal  before performing electrical work, disconnect the battery negative (–) terminal cable beforehand so as to prevent burnt–out damage by short.  When disconnecting and installing the terminal cable, turn the ignition switch an ...

    Circuit description
    The airbag sensor front lh circuit consists of the airbag sensor assy center and airbag sensor front lh. Dtc b1158/b1159/16 is recorded when malfunction is detected in the airbag sensor front lh circuit. Wiring diagram ...