Corolla CE Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
Ignition Switch: Symptom Related Diagnostic Procedures
Symptom Chart
Troubleshooting / Theft Deterrent System
HINT: Troubleshooting of the theft deterrent system is based on the premise that the door lock control system is operating normally. Accordingly,
before troubleshooting the theft deterrent system, first make certain that the door lock control system is operating normally.
Inspection Flow Charts
IGNITION SWITCH CIRCUIT
CIRCUIT DESCRIPTION
When the ignition switch is turned to the ACC position, battery positive voltage is applied to the terminal ACC of the ECU. Also, if the ignition switch is
turned to the ON position, battery positive voltage is applied to the terminals ACC and IG of the ECU.
When the battery positive voltage is applied to the terminal ACC of the ECU while the theft deterrent system is activated, the warning stops.
Furthermore, power supplied from the terminals ACC and IG of the ECU is used as power for the door courtesy switch, and position switch, etc.