Test B: The Alarm System Does Not Arm/Disarm - Using the Driver Door Arm/Disarm Switch

PINPOINT TEST B: THE ALARM SYSTEM DOES NOT ARM/DISARM - USING THE DRIVER DOOR ARM/DISARM SWITCH

B1-B3:

B3-B5:

B5-B6:

Normal Operation
The driver door arm/disarm switch grounds either circuit 31S-AA78 or 31S-AA79 to the driver door module (DDM). The DDM then communicates over the standard corporate protocol (SCP) communication network to the front electronic module (FEM) to arm/disarm the alarm system.

Possible Causes
- driver door arm/disarm switch
- DDM
- circuit 31S-AA79 (BK/WH) short to ground
- circuit 31S-AA78 (BK/BU) short to ground