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Circuit/System Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X2 and X3 harness connectors at the K29F Seat Heating Control Module - Front.
  2. Test for greater than 3.0 kΩ between the signal and the low reference circuit terminals listed below:
    • Driver seat cushion terminal 3 X3 and terminal 13 X2
    • Passenger seat cushion terminal 4 X3 and terminal 14 X2
    • If less than 3.0 kΩ 
    1. Ignition OFF, disconnect the harness connector at the appropriate seat cushion heating element listed below:
      • E14B Seat Heating Element - Driver Cushion
      • E14D Seat Heating Element - Passenger Cushion
    2. Test for Infinite resistance between the signal and low reference circuits.
      • If less than infinite resistance, repair the short between the circuits.
      • If infinite resistance, test or replace the E14 Seat Heating Element.
    • Go to next step: If greater than 3.0 kΩ 
  3. Replace the K29F Seat Heating Control Module - Front.
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