4. Door Switch Input Circuit

DESCRIPTION OF OPERATION
When the door is closed (the door switch is switched OFF), HIGH-level signals are sent to the ECU.

When the door is opened (the door switch is switched ON), LOW-level signals are sent to the ECU.





ECU TERMINAL VOLTAGE
Connection condition of the ECU)

NOTE: * Measurement is not possible by using a voltmeter, but is possible by using an oscilloscope.





CHECKING THE DOOR SWITCH CIRCUIT
Disconnect the connector of the ECU and check at the wiring harness side.)