Published: 20-Oct-2016

2007.0 Range Rover Sport (LS), 308-07B

Transfer Case (G830653)

DIAGNOSIS AND TESTING
Overview

The DD295 transfer box is a permanent four-wheel-drive unit, with 50/50 torque distribution to the front and rear driveshafts and is identical for all engine derivatives. For additional information on the transfer box and associated DTCs: REFER to: Four-Wheel Drive Systems (308-07A Four-Wheel Drive Systems, Diagnosis and Testing).

Inspection and Verification
  1. Verify the customer concern.
  1. Confirm which, if any, warning lights and/or messages were displayed on the instrument cluster. For a list of messages, refer to the relevant section of the workshop manual.
  1. Visually inspect for obvious mechanical or electrical faults.

Visual inspection

MechanicalElectrical
  • Transfer box
  • Oil leaks
  • Driveshafts
  • Halfshafts
  • Constant velocity (CV) joints
  • Fuse(s)
  • Wiring harness/electrical connectors
  • Controller area network (CAN) circuits
  • Instrument cluster
  • Range change selection switch
  • Transfer box control module
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. Use the approved diagnostic system or a scan tool to retrieve any DTCs before moving onto the symptom chart or DTC index.
      • Confirm that all DTCs are cleared following rectification.
Symptom Chart
SymptomMessagePossible causesAction
Warning message/gearbox fault displayed on instrument cluster-
  • Transfer case system fault
  • Using the manufacturer approved diagnostic system, perform routine - Inline diagnostic unit 2 non-intrusive test - Transfer case
  • Pass - Recheck operation
  • Fail - Refer to the relevant DTC index
Loss of drive due to transfer box stuck in neutral and transmission park lock function is inoperative'PARK LOCK FAILURE APPLY HANDBRAKE'
  • Transfer box control module CAN bus - off bus during range change
  • Transfer box changeover solenoid fault
  • Transfer box motor fault
  • Transfer box internal obstruction
  • Refer to the Network Communications section of the workshop manual.
Loss of drive-
  • Half shaft failure
  • Driveshaft failure
  • Front or rear axle: differential failure
  • Transfer box center differential failure
  • Check the condition of the driveshafts, half shafts and CV joints.
Range change inhibited'TRANSMISSION RANGE CHANGE INOPERATIVE'
  • Transfer box control module has shut down due to thermal overload
  • Transfer box internal obstruction
  • Transfer box changeover solenoid fault
  • Transfer box motor fault
  • Transfer box control module failure
  • Using the manufacturer approved diagnostic system, perform routine - Inline diagnostic unit 2 non-intrusive test - Transfer case
  • Check for transfer box control module DTCs.
Off road traction reduced'TRANSMISSION OVER HEAT SLOW DOWN'
  • Center differential temperature is approaching the over heated threshold
  • Check for over-temperature DTCs.
'TRANSMISSION FAULT – TRACTION REDUCED'
  • Center differential has failed - operating as an open differential
  • Transfer box control module has stopped transmitting on the CAN bus and defaults to open center differential
  • Check for lost communication and bus off DTCs.
Judder-
  • Noise / Judder evident possibly after oil change
  • Evident when vehicle at low speed, when cornering, parking or steering
  • Using the manufacturers approved diagnostic system, complete the transfer case calibration routine
  • Disconnect the electrical connections. Check for bent or corroded terminals. Clean or replace and reconnect electrical connections
  • Clear the DTC, cycle the ignition state off / on wait 30 seconds and re-test
  • Using the manufacturers approved diagnostic system, complete the transfer case calibration routine
  • If the judder is still evident, collect an oil sample and check for water ingress (emulsification). White coloration of oil
  • If water ingress is evident replace the transfer case. Ensure breather is installed correctly
Clunk-
  • Transfer box clutch actuator out of correct position :
    • Evident when transfer case range change from high to low and low to high
    • Evident during ignition state switched off and transfer case cycles to rest position
  • Using the manufacturers approved diagnostic system, complete the transfer case calibration routine
  • Disconnect the electrical connections. Check for bent or corroded terminals. Clean or replace and reconnect electrical connections
  • Clear the DTC, cycle the ignition state off / on wait 30 seconds and re-test
  • Using the manufacturers approved diagnostic system, complete the transfer case calibration routine
Whine - Bearing wear-
  • Bearing Wear: - L322 V8 Diesel: pre-VIN LM334433 and pre-Transfer Case Unit Serial No: A664402
  • Bearing Wear: - L319 pre-VIN LA572494
  • L320 pre-VIN LS288059
  • L322 Gasoline pre-VIN LM346534 and pre-Transfer Case Unit Serial No: A0711997
NOTE:

For VINs/Transfer Case Serial numbers not specified in the previous column, the correct action is to install a new Transfer Case as required

  • Replace either the front or rear bearing/seal REFER to: (308-07 Transfer Case)
    Transfer Case Front Output Shaft Bearing (In-vehicle Repair),
    Transfer Case Rear Output Shaft Bearing (In-vehicle Repair).