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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 B175A, B1770, B2015, or B3942 >> 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 Horizontal Motor

  1. Ignition OFF, disconnect the X2 harness connector at the M51 Seat Horizontal Motor.
    2. NOTE:

    When performing the following tests, make sure that the seat is not already in the position the test is attempting to produce.

  2. Install a 30 A fused jumper wire between control terminal 1 X2 and 12 V.
  3. Momentarily install a jumper wire between control terminal 5 X2 and ground. The seat motor should momentarily perform the appropriate REARWARD function.
    • If the motor does not perform the REARWARD function 

      Replace the M51 Seat Horizontal Motor.

    • Go to next step: If the motor performs the REARWARD function 
  4. Reverse the jumper wires; the motor should perform FORWARD function.
    • If the motor does not perform the FORWARD function 

      Replace the M51 Seat Horizontal Motor.

    • Go to next step: If the motor performs the FORWARD and REARWARD functions 
  5. All OK.
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