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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information And Procedures >> Memory Seat Feature Malfunction >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, all vehicle systems OFF, disconnect the harness connector at the S47D Seat Memory Switch - Driver. It may take up to 2 min for all vehicle system to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 1 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Ignition ON, press a power seat switch in order to wake up the K40D Seat Memory Control Module - Driver.
  4. Test for 9 V or greater between each signal circuit terminal listed below and ground:
    • Memory set switch signal terminal 5
    • Memory switch signal terminal 6
    • If less than 9 V 
    1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module - Driver.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K40D Seat Memory Control Module - Driver.
    • Go to next step: If 9 V or greater 
  5. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module - Driver, ignition ON.
  6. Test for less than 1 V between each signal circuit terminal listed below and ground:
    • Memory set switch signal terminal 5
    • Memory switch signal terminal 6
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • Go to next step: If less than 1 V 
  7. Test or replace the S47D Seat Memory Switch - Driver.