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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Fixed And MOVEABLE Window System) >> Diagnostic Information and Procedures >> Power Windows Malfunction (A55 With A33) >> Component Testing >> M74 Window Motor - Test

M74 Window Motor - Test

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector: M74 Window Motor
  3. Connect a 25 A fused jumper wire between the test points: Control terminal 1 & B+
  4. Momentarily connect a jumper wire between the test points: Control terminal 2 & Ground

    Reverse the jumper wires 2 times between the terminals.

    Verify the component operates in both directions: M74 Window Motor=Up & Down

    • If not the specified state 

      Replace the component: M74 Window Motor

    • If the specified state 
  5. All OK.