4. Door Switch Input Circuit

OPERATION DESCRIPTION
When the door is closed (the door switch is switched OFF), HIGH-level signals are sent to the electronic control unit; when the door is opened (the door switch is switched ON), LOW-level signals are sent to the electronic control unit.





ELECTRONIC CONTROL UNIT TERMINAL VOLTAGE
Check connection status of the electronic control unit.





CHECKING THE DOOR SWITCH CIRCUIT
Disconnect the connector of the electronic control unit and check at the wiring harness side.