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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (Power Seat System) >> Diagnostic Information and Procedures >> DTC B3728 or B3737 >> Component Testing

Component 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.

Seat Adjuster Switch Test

  1. Ignition OFF, disconnect the harness connector at the appropriate S64 Seat Adjuster Switch.
  2. Test for infinite resistance between the B+ terminal E and each control terminal with the switch in the open position.
    • If less than infinite resistance 

      Replace the S64 Seat Adjuster Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the B+ terminal E and each control terminal with the appropriate switch in the closed position.
    • If 2 Ω or greater 

      Replace the S64 Seat Adjuster Switch.

    • Go to next step: If less than 2 Ω 
  4. Test for less than 2 Ω between the ground terminal B and each control terminal with the switch in the open position.
    • If 2 Ω or greater 

      Replace the S64 Seat Adjuster Switch.

    • Go to next step: If less than 2 Ω 
  5. All OK.