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Circuit/System Testing

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle OFF, disconnect the connector at the S47D Front Seat Adjuster Memory Switch - Driver - Driver.
  2. Test for less than 10 Ω between the ground circuit terminal 2 and ground.
    • If 10 Ω or greater 
    1. Test circuit 2150 for an open/high resistance:
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    2. Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Ignition/Vehicle in Service Mode.
  4. Press a power seat switch in order to wake up the K40D Driver Seat Adjuster Memory Module.
  5. Test for 4.8 - 5.2 Volts between the signal circuit terminal 3 and ground.
    • If less than 4.8 V 
    1. Test circuit 615 for a short to ground:
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
    2. Test circuit 615 for an open/high resistance:
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    3. Replace the K40D Driver Seat Adjuster Memory Module.
    • If greater than 5.2 V 
    1. Test circuit 615 for a short to voltage:
      • If a short to voltage is found, repair the fault on the circuit.
      • Go to next step: If a short to voltage is not found
    2. Replace the K40D Driver Seat Adjuster Memory Module.
    • Go to next step: If between 4.8 - 5.2 V 
  6. Test or replace the S47D Front Seat Adjuster Memory Switch - Driver.
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