Land Rover Technical Bulletin Rover

							
Technical Service Bulletin 
      
No.LTB00079  
      13 August 2007 
 
 
Models:   
Discovery 3/LR3     VIN-range: 5A000259 Onwards  
Range Rover Sport (LS)    VIN-range: 5A900106 Onwards  
 
Markets: All  Section: 206-00  
Summary:   
Screech noise on application/release of the El ectronic Parking Brake (EPB) when the car is 
stationary, with the possibility of the EPB lamp illuminating, with Diagnostic Trouble Code (DTC) 
C1A43-00, C1A53-68 and/or C1A46-62 stored.  
Cause: The internal components of the EPB actuator have over-t raveled and may be jammed. 
Action:  Should a customer express concern, follow  the Diagnostic Procedure outlined below.
  
Labour Time:   
Operation Description   Operation No.  Time  
Electric Park Brake Unjamming 
Procedure  70.35.89/37  0.2 hours  
Service Electric Park Brake 
Shoes - Range Rover Sport  70.35.89/38  1.8 hours  
Service Electric Park Brake 
Shoes - New Discovery  70.35.89/38  1.5 hours  
 
Repair/Claim Coding:   
Causal Part:  SNF500180  
ACES Condition 
Code:  42  
Defect Code:   
 
Diagnostic Procedure   
Unjamming the EPB  
 1 . CAUTION: This procedure requires IDS DVD108  with Patch File 1 loaded or later.  
  Connect an approved battery charger/power supply to the vehicle.  
 2 .  Connect IDS to the vehicle and begin a  new diagnostic session, by entering the 
  correct VIN for the current vehicle.  
  3 .  Follow the IDS prompts to read the vehicle configuration.  
 4 .  When prompted Do you wish to read diagno stic trouble codes?, select NO and then 
  press tick to continue.  
  5 .  When the Content Model is displayed select Vehicle Configuration tab.  
 6 .  Select from the menu Set-up and Configuration, and then press tick to continue.  
 7 .  Select Parking Brake from the drop down menu.  
 8 .  Select Parking Brake unjam Procedure  from the menu and then press tick to 
 continue.  
    
						

							
 9 .  NOTE:  If the task completes successfully the  parking brake cables will drive out to 
  the mount position.  
  Follow all on-screen instructions to complete this task.  
 10 . When the task is complete d, exit the current session.  
 11 . Disconnect IDS and the battery charger/power supply.  
 
Inspect and Service the Park Brake  
 12 . Isolate the parking brake electrical circuit.  
 1 Remove the EPB 30 Amp fuse LINK 8E  from the Battery Junction Box (P108). 
. 
 
  13 . Remove the rear wheels, brake calipers an d brake discs (see Global Technical Reference 
  GTR Workshop Manual, section: 206-05 (70.40.09)).  
  14 .  NOTE:  Renew components as necessary. To be  carried out as a separate warranty 
  claim (normal wear and tear is not covered by warranty).  
 
Inspect the general condition of the parking brakes. 1 Look for evidence of 
brake drag. This may be evident throug h excessive shoe lining or . drum 
wear. There may also be evidence of heat build-up on the shoes, drums or 
other internal components.  
2 Ensure shoe hold-down clips are not damaged.  
.  
3 Remove any build-up of brake dust from the drum/shoe interface.  
.  
4 Inspect shoe linings (they should be a minimum of 2.0 mm thick).  
.  
  15 . Check that the brake cables are correct ly attached by releasing the outer cable 
  retaining nuts from the back plates, and pulling on the cables. The cables should not detach 
  from the brake.  
  16 . Ensure the E-clips are installe d to the outer brake cable ends.  
 
Install and Adjust  
 17 . Refit the outer cable retaining nuts and torque to 8 Nm (6 lbft).  
 18 . Install the brake discs and brake calipers (see Global Technical Reference GTR 
  Workshop Manual, section: 206-05 (70.40.09)).  
  19 .  
 
CAUTION: Carry out the parking brake shoe and lining adjustment procedure in 
 full.   
Carry out parking brake shoe  and lining adjustment (see Glob al Technical Reference GTR 
Workshop Manual, section: 206-05).  
  20 . Reinstall the EPB 30 Amp fuse LINK 8E  to the Battery Junction Box (P108).  
 21 .  
 
CAUTION: This procedure requires IDS DVD1 08 with Patch File 1 loaded or later.  
Connect an approved battery charger/power supply to the vehicle.  
 22 . Connect IDS to the vehicle and begin a new  diagnostic session, by entering the correct 
  VIN for the current vehicle.  
  23 . Select from the menu Set-up and Configurat ion, and then press tick to continue.  
 24 . Select Parking Brake from the drop down menu.  
 25 . Select Drive Parking Brake  to the Latching Position from the menu and then press tick 
  to continue.  
  26 . Follow all on-screen instructions to complete this task.  
 27 . Clear all DTCs from the EPB Module fault memory.  
  
						

							
Check Actuator Operation  
 28 . Select gear posi tion NEUTRAL.  
 29 . Select gear range LOW.  
 30 .  NOTE:  If the repair has been successful ther e will be no abnormal loud screeching 
  noises coming from the EPB actuator while ca rrying out this exercise. If there are abnormal 
  screeching noises, the EPB actuator may have suffered internal damage and will have to be 
  replaced. To be carried out as  a separate warranty claim.  
 Using the EPB switch in the vehicles cab, appl y and release the parking brake three times.  
 31 .  NOTE:  If any DTCs have been logged, further investigation is required into possible 
  causes of these DTCs. Refer to the IDS DTC Help Text for further guidance. To be carried 
  out as a separate  warranty claim.  
 Re-check for DTCs in the EPB Module. If the  repair has been successful the DTCs listed at 
  the start of this bulletin will not have logged and the EPB red warning lamp will no longer be 
 flashing.  
  32 . When the task is complete d, exit the current session.  
 33 . Disconnect IDS and the battery charger/power supply.  
 
©2007 LandRover  
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