Test C: The Alarm System Does Not Operate Correctly - Alarm Does Not Activate With Hood Ajar/Open

PINPOINT TEST C: THE ALARM SYSTEM DOES NOT OPERATE CORRECTLY - ALARM DOES NOT ACTIVATE WITH HOOD AJAR/OPEN

C1:

C1-C3:

C4-C5:

Normal Operation
The hood switch is a normally closed switch. The smart junction box (SJB) receives the hood switch status through circuit CPL25 (BU/OG), the hood switch, and the hood switch ground circuit GD123 (BK/GY). When the hood is open, the hood switch opens, removing the ground to the SJB.

DTC B1520 - sets when there is an open in the circuit between the hood switch and the SJB, an open in the ground circuit to the hood switch, or the hood switch is stuck open.

Possible Causes
- Circuit CPL25 (BU/OG) open or short to ground
- Circuit GD123 (BK/GY) open
- Hood switch
- SJB