LEMON Manuals: Even more car manuals for everyone
Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different car >> Section 184 (Seating -- XE/(760)) >> Seating (G2260444) >> Diagnosis And Testing >> Seats - Vehicles With: Lumbar/Massage (G2105548) >> Pinpoint Tests >> Pinpoint Test I: Memory Seat Bolster Inflate Tests

Pinpoint Test I: Memory Seat Bolster Inflate Tests

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
  1. I1: MEMORY SEAT BOLSTER INFLATE TEST 1 
    NOTE: Some DTCs can only be set if the fault is detected during the On Demand Self Test routine.
    1. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - On Demand Self Test
    2. Using the Jaguar Land Rover approved diagnostic equipment, check the relevant seat module for related DTCs and refer to the relevant DTC index

      Are any relevant DTCs set?

      Yes 

      Perform the relevant corrective action

      No 

      GO to  I2.

  2. I2: MEMORY SEAT BOLSTER INFLATE TEST 2 
    NOTE: The battery support unit must be connected during this test to make sure that the power supply is stable.
    NOTE:
    • Circuit reference - VBATT -
    • The bolster inflate circuit current specification is 1.05A ± 10%.
    1. Connect an inductive ammeter to the seat switchpack power circuit
    2. Set the ignition to on
    3. Operate the seat switchpack bolster inflate switch

      Is the measured current less than specification?

      Yes 

      GO to  I3.

      No 

      Check the lumbar/bolster pump hose and the bolster air cell hoses for blockages/leaks

  3. I3: MEMORY SEAT BOLSTER INFLATE TEST 3 
    NOTE: Do not disconnect the electrical connector during this step; the seat switchpack is removed for access to the wiring harness only.
    1. Refer to the relevant article of the repair information and remove the seat switchpack
    2. Set a multimeter to measure voltage
    3. Using the multimeter, measure and record the battery voltage (reference voltage)
      NOTE: Circuit reference - BOLSTER INF/GND -
    4. Connect the multimeter across the seat switchpack bolster inflate terminal and the ground terminal
    5. Set the ignition to on
    6. Operate the seat switchpack bolster inflate switch

      Is the measured voltage less than battery voltage?

      Yes 

      GO to PINPOINT TEST A .

      No 

      Refer to the electrical circuit diagrams and check the bolster inflate circuit for short circuit to ground, short circuit to power, open circuit, high resistance

scientia non olet · About LEMON Manuals