Inspection and check of the handbrake (Discovery 3)

1. Check the customer complaint.

2. Visually inspect for obvious mechanical and electrical faults.

Mechanical elements	Electrical elements
Condition and installation of parking brake cable(s) Condition and installation of parking brake shoes Parking brake drums (integrated into the rear brake discs) Parking Brake Actuator Module Status and Installation	Parking brake warning lights Fuses Engine compartment fuse box - fuse 11E Engine compartment fuse box - fuse 8E Passenger compartment fuse box - fuse 40P Passenger compartment fuse box - fuse 41P Wiring harness/electrical connectors. Check for bent/corroded pins CAN electrical circuits (Control Area Network) Parking brake switch Parking Brake Actuator Module

3. If an obvious cause for a fault identified or reported by the customer is found, correct it before proceeding to further actions. (if possible).

4. Before referring to the symptom chart or DTC index, read all DTCs using an approved diagnostic system or scan tool. Clear all DTCs after troubleshooting.

The article was copied from the website: www.lrman.ru

Table of signs of malfunctions

Sign of malfunction	Possible reasons	Action taken
Unable to engage or release parking brake / Poor performance / sticking / deformation of parking brake	Parking brake cables are dirty, pinched or damaged Parking brake cables are not properly adjusted or secured Parking brake pads and linings are worn/dirty Parking brake drums (integrated into the rear brake discs) Parking brake shoes incorrectly adjusted after replacement Parking Brake Actuator Module Malfunction	Inspect the parking brake cables for dirt, binding, or damage. Check that the cables are routed correctly. Make sure the cable end(s) are properly connected to the lever(s). Inspect the parking brake shoes and drums for condition/wear/dirt. Brake Disc (70.12.33) Parking Brake Shoes (70.40.09) Check that the parking brake shoes are adjusted correctly. Parking Brake Shoe and Lining Adjustment (70.40.11) Inspect the parking brake actuator module for operation, damage, and/or excessive noise during operation. Inspect for DTCs related to the parking brake actuator module.