Test N

PINPOINT TEST N: THE DOOR AJAR INDICATOR IS INOPERATIVE (CHIME IS OPERATIVE)/DOES NOT OPERATE CORRECTLY

Test N1-N4:

Normal Operation
The normally open door ajar switches are directly hardwired to the front electronic module (FEM). When any door is open, the door ajar switch provides a ground signal to the FEM. When the door is closed, the door ajar switch opens, removing the ground signal to the FEM. The FEM uses the multiple inputs from the door ajar switches to determine whether the doors are in the opened or closed position and provides a signal to the instrument cluster over the standard corporate protocol (SCP) communication network, circuits 4-EG8 (GY/VT) and 5-EG8 (BU/WH). A door ajar chime that is operating correctly indicates that the FEM is monitoring the correct operation of the door ajar switches.

Possible Causes
- FEM
- instrument cluster