Pinpoint Test F: Heating And Cooling: Seat Backrest Or Seat Base Inoperative

F1: CONFIRM THE CORRECT SETTINGS
NOTE: When dealing with an individual inoperative seat, seat backrest or seat base the two should be treated as individual assemblies and NOT replaced as a pair.
1. Where applicable to the system control type, use the infotainment screen to confirm that the seat backrest and seat base are both active, if not make sure that the seat backrest and seat base are both active and retest the system. Confirm if this was the cause for the customers concern.
  Were the settings the cause for the customers concern?
  
  Yes: No further action required, refer the customer to Jaguar Land Rover owner information for Climate Seats and review the system operation with the customer.
  
  No: GO to F2.
F2: CHECK FOR STORED DIAGNOSTIC TROUBLE CODE(S)
1. Check the HVAC for stored DTC s
  Are there any stored DTC s?
  
  Yes: For information on stored DTC s refer to the information in the HVAC DTC index. If the fault persists or the DTC index refers back to the Diagnosis and Testing procedure, GO to F3.
  
  No: GO to F3.
F3: SYSTEM INTEGRITY CHECKS
1. Check the condition of the climate assembly fixing to the seat backrest and make sure the outlet is correctly installed and secured to the seat base
  Is the climate assembly correctly installed and secured?
  
  Yes: GO to F4.
  
  No: Secure the climate assembly to the seat replacing any fixtures required and retest the system.
F4: SYSTEM INTEGRITY CHECKS
1. Check the condition of the air intake and fan for blockages causing a restricted air flow.
  Were any blockages found?
  
  Yes: Remove any blockages and retest the system.
  
  No: GO to F5.
F5: SYSTEM INTEGRITY CHECKS
1. Check the air intake and fan for damage which could cause reduced functionality
  Was any damage to the air intake or fan found?
  
  Yes: Replace the damaged climate assembly only, DO NOT replace in pairs.
  
  No: GO to F6.
F6: SYSTEM INTEGRITY CHECKS
1. Remove the climate assembly and inspect the climate assembly outlet duct is installed correctly to the seat backrest and the bellows within the seat backrest
  Was a concern found with the alignment and installation of the components?
  
  Yes: Rectify as necessary and retest the system.
  
  No: GO to F7.
F7: SYSTEM INTEGRITY CHECKS
1. Remove the seat backrest and inspect the bellows and the seat backrest cushion for any damage that could reduce functionality
  Was any damage found to the seat backrest cushion or bellows that could reduce functionality?
  
  Yes: Rectify as necessary, replace the bellows and/or the seat backrest cushion. DO NOT replace the seat backrest cover as part of the repair.
  
  No: GO to F8.
F8: WIRING HARNESS INTEGRITY CHECKS
NOTE: The nyogel must not trace between pins of the connector, this can cause a potential short circuit
1. Refer to the electrical circuit diagrams and gain access to the affected climate assembly and climate seat module, check the connectors are secure and fully latched and retest the system
  Were the connectors correctly installed?
  
  Yes: GO to F9.
  
  No: If the system began to operate as expected after reconnecting the connectors, complete a pin drag test to make sure that the female pin associated to the circuit is not loose. If any of the pins are loose or damaged, repair as necessary making sure that Nyogel (LR054614) is applied to the individual pins of the repaired connector.
F9: WIRING HARNESS INTEGRITY CHECKS
NOTE: The nyogel must not trace between pins of the connector, this can cause a potential short circuit
1. Refer to the electrical circuit diagrams and gain access to the affected climate seat module, disconnect the electrical connector at the climate seat module and check for any damage, loose or bent pins
  Was a concern identified with the connector or pins?
  
  Yes: Repair the wiring using an overlay harness (if available), REFER to: WIRING HARNESS OVERLAY Make sure that Nyogel (LR054614) is applied to the individual pins of the repaired connector.
  
  No: GO to F10.
F10: REPLACE THE CLIMATE ASSEMBLY
1. Replace the affected climate assembly DO NOT replace the seat climate assemblies as a pair, only the individual affected assembly should be replaced. Make sure the system is reassembled to test, retest the system and attempt to recreate the concern
  Is the concern still present?
  
  Yes: GO to F11.
  
  No: Internal failure of the climate unit, make sure all components are refitted correctly and hand the vehicle back to the customer.
F11: REPLACE THE CLIMATE SEAT MODULE
1. Replace the affected climate seat module. Make sure the system is reassembled to test, retest the system and attempt to recreate the concern
  Is the concern still present?
  
  Yes: Raise a TA and report all of the above findings and information.
  
  No: Internal failure of the climate seat module, make sure all components are refitted correctly and hand the vehicle back to the customer.