Pinpoint Test A: Seat SWITCHPACK Tests

A1: SEAT SWITCHPACK TEST 1
1. Check the specification of the seat
  Are there memory functions for the seat?
  
  Yes: GO to A2.
  
  No: GO to A3.
A2: SEAT SWITCHPACK TEST 2
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 A3.
A3: SEAT SWITCHPACK TEST 3
NOTE: Perform this test at every power circuit terminal in the seat switchpack connector.
1. Set a multimeter to measure voltage
2. Using the multimeter, measure and record the battery voltage (reference voltage)
  NOTE: Do not disconnect the electrical connector during this step; the seat switchpack is removed for access to the wiring harness only.
3. Refer to the relevant service information and remove the seat switchpack
4. Set the ignition to on
  NOTE: Circuit reference - VBATT/GND -
5. Connect the multimeter across the seat switchpack power terminal and the ground terminal
  Is the measured voltage less than battery voltage?
  
  Yes: GO to A4.
  
  No: Install a new seat switchpack
A4: SEAT SWITCHPACK TEST 4
NOTE: Circuit reference - GND -
1. Connect the multimeter to the seat switchpack ground terminal and battery negative
  Is the measured voltage greater than 0V?
  
  Yes: Refer to the electrical circuit diagrams and check seat switchpack ground circuit for open circuit, high resistance. Repair the harness as necessary
  
  No: Refer to the electrical circuit diagrams and check seat switchpack power circuit for open circuit, high resistance. Repair the harness as necessary