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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 >> Power Seat Malfunction (Front Seat) >> 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 Motor

  1. Ignition OFF, disconnect the harness connector at the appropriate seat motor listed below:
    • M50 Seat Front Vertical Motor
    • M55 Seat Rear Vertical Motor
    • M51 Seat Horizontal Motor
    • M56 Seat Recline 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 and 12 V.
  3. Momentarily install a jumper wire between control terminal 5 and ground. The seat motor should momentarily perform the appropriate FORWARD/ REARWARD/ UP/ DOWN function.
    • If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function 

      Replace the seat motor.

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

      Replace the seat motor.

    • Go to next step: If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function 
  5. All OK.
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