3. Hood Switch Input Circuit

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

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





ECU TERMINAL VOLTAGE
Connection condition of the ECU connector).

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





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