Circuit Protection

The CJB provides circuit protection for all interior lamp circuits. The following interior lamp circuits are protected by Field Effect Transistors (FETS):

• Luggage compartment lamps
• Footwell lamps
• Courtesy lights
• Ignition push button illumination
• Puddle lamps.

The above components are protected by FETs which can detect overloads and short circuits. The FETs respond to heat generated by increased current flow caused by a short circuit. On a normal circuit this would cause the fuse to blow, rendering that component and circuit inoperative. The FETs respond to the heat increase and disconnect the supply to the affected circuit. When the fault is rectified or the FET has cooled, the FET will reset and operate the circuit normally.

The following interior lamps circuits are protected by Fuse 57P (10A) in the CJB and part of the Battery Saver mode:

• Glove compartment lamp
• Map reading lamps
• Vanity mirror lamps.