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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Power Seat System) >> Diagnostic Information and Procedures >> DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:

    It is only necessary to test or verify the function that did not pass in Circuit/System Verification.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector:S64D Seat Adjuster Switch - Driver
  3. Ignition - On / Vehicle - In Service Mode
  4. Verify the scan tool parameter:
    • Driver Seat Cushion Front Vertical Switch = Inactive
    • Driver Seat Cushion Rear Vertical Switch = Inactive
    • Driver Seat Horizontal Switch = Inactive
    • Driver Seat Back Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector:X5@K40D Seat Memory Control Module - Driver
    3. Test for infinite resistance between the test points:
      • {Driver Seat Cushion Front Vertical Switch - Up}Signal circuit terminal A@Component harness & Ground
      • {Driver Seat Cushion Front Vertical Switch - Down}Signal circuit terminal K@Component harness & Ground
      • {Driver Seat Cushion Rear Vertical Switch - Up}Signal circuit terminal F@Component harness & Ground
      • {Driver Seat Cushion Rear Vertical Switch - Down}Signal circuit terminal J@Component harness & Ground
      • {Driver Seat Horizontal Switch - Forward}Signal circuit terminal D@Component harness & Ground
      • {Driver Seat Horizontal Switch - Rearward}Signal circuit terminal C@Component harness & Ground
      • {Driver Seat Back Switch - Forward}Signal circuit terminal H@Component harness & Ground
      • {Driver Seat Back Switch - Rearward}Signal circuit terminal G@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component:K40D Seat Memory Control Module - Driver
    • Go to next step: If the specified state 
  5. Connect a 3 A fused jumper wire between the test points:
    • {Driver Seat Cushion Front Vertical Switch - Up}Signal circuit terminal A & Ground circuit terminal E
    • {Driver Seat Cushion Front Vertical Switch - Down}Signal circuit terminal K & Ground circuit terminal E
    • {Driver Seat Cushion Rear Vertical Switch - Up}Signal circuit terminal F & Ground circuit terminal E
    • {Driver Seat Cushion Rear Vertical Switch - }DownSignal circuit terminal J & Ground circuit terminal E
    • {Driver Seat Horizontal Switch - Forward}Signal circuit terminal D & Ground circuit terminal E
    • {Driver Seat Horizontal Switch - Rearward}Signal circuit terminal C & Ground circuit terminal E
    • {Driver Seat Back Switch - Forward}Signal circuit terminal H & Ground circuit terminal E
    • {Driver Seat Back Switch - Rearward}Signal circuit terminal G & Ground circuit terminal E
    • Verify the scan tool parameter:
    • Driver Seat Cushion Front Vertical Switch = Up/Down
    • Driver Seat Cushion Rear Vertical Switch = Up/Down
    • Driver Seat Horizontal Switch = Forward/Rearward
    • Driver Seat Back Switch = Forward/Rearward
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:X5@K40D Seat Memory Control Module - Driver
    3. Test for less than 2 ohms between the test points:
      • {Driver Seat Cushion Front Vertical Switch - Up}Signal circuit terminal A@Component harness & Terminal 9@Control module harnessX5
      • {Driver Seat Cushion Front Vertical Switch - Down}Signal circuit terminal K@Component harness & Terminal 10@Control module harnessX5
      • {Driver Seat Cushion Rear Vertical Switch - Up}Signal circuit terminal F@Component harness & Terminal 19@Control module harnessX5
      • {Driver Seat Cushion Rear Vertical Switch - Down}Signal circuit terminal J@Component harness & Terminal 20@Control module harnessX5
      • {Driver Seat Horizontal Switch - Forward}Signal circuit terminal D@Component harness & Terminal 7@Control module harnessX5
      • {Driver Seat Horizontal Switch - Rearward}Signal circuit terminal C@Component harness & Terminal 8@Control module harnessX5
      • {Driver Seat Back Switch - Forward}Signal circuit terminal H@Component harness & Terminal 21@Control module harnessX5
      • {Driver Seat Back Switch - Rearward}Signal circuit terminal G@Component harness & Terminal 22@Control module harnessX5
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K40D Seat Memory Control Module - Driver
    • Go to next step: If the specified state 
  6. Test or replace the component:S64D Seat Adjuster Switch - Driver
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