Pinpoint Test A: The Parking Brake Does Not Apply Or Does Not Hold Vehicle

A1 CHECK THE PARKING BRAKE CONTROL
- Pull up the parking brake control handle.
Does the parking brake control move?
- Yes : GO to A2
- No : GO to A3
A2 INSPECT THE FOLLOWING PARKING BRAKE COMPONENTS
NOTE: Have an assistant pull and release the parking brake to help isolate disconnected cables or cables that do not move.
- Parking brake control
- Front parking brake cable
- Rear parking brake cables and/or equalizer
- Rear brake caliper actuators
Is any damage found or are any components disconnected?
- Yes : CONNECT the component(s) or INSTALL new parking brake component(s) as necessary. TEST the system for normal operation.
  ADJUST the parking brake cables.
  
  REFER to: PARKING BRAKE CABLE ADJUSTMENT - VEHICLES WITH: REAR DISC BRAKES .
- No : VERIFY that the rear pads and brake discs are within thickness specifications.
  REFER to: SPECIFICATIONS .
  
  If the rear pads and brake discs are OK, INSTALL new rear brake caliper(s). REFER to: BRAKE CALIPER .
A3 ISOLATE THE PARKING BRAKE CONTROL AND FRONT PARKING BRAKE CABLE
- Disconnect the front parking brake cable from the rear parking brake cable equalizer.
- Pull up the parking brake control handle.
Does the parking brake control handle move?
- Yes : GO to A4
- No : INSTALL a new parking brake control or a new front parking brake cable as necessary.
  REFER to: PARKING BRAKE CONTROL .
  
  TEST the system for normal operation.
A4 ISOLATE THE REAR PARKING BRAKE CABLES
- Disconnect the rear parking brake cable from the rear brake caliper at the affected wheel end(s).
- While holding the cable conduit, attempt to slide the cable inside the conduit.
Does the cable slide freely inside the conduit?
- Yes : The parking brake system is operating normally at this time. INSPECT the rear brake components on the affected wheel end(s). INSTALL new rear brake components as necessary and ADJUST the parking brake cables.
  REFER to: PARKING BRAKE CABLE ADJUSTMENT - VEHICLES WITH: REAR DISC BRAKES .
- No : INSTALL new rear parking brake cables.
  REFER to: PARKING BRAKE CABLE - VEHICLES WITH: REAR DISC BRAKES .