Component Testing

M74P, M74Lr, Or M74Rr Side Door Window Regulator Motor

1. Vehicle Power Mode - Off.
2. Disconnect The Appropriate Electrical Connector: M74P Front Side Door Window Regulator Motor - Passenger, M74Lr Rear Side Door Window Regulator Motor - Left Or M74Rr Rear Side Door Window Regulator Motor - Right
3. Connect A 25 A Fused Jumper Wire Between The Test Points: Control Terminal 1 & B+
CAUTION:

Complete The Testing As Quickly As Possible In Order To Prevent Overheating And Damaging The Component.

5. 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 Works As Specified: M74 Window Motor = Up & Down

   • If Not The Specified State 

     Replace The Component: M74P Front Side Door Window Regulator Motor - Passenger, M74Lr Rear Side Door Window Regulator Motor - Left Or M74Rr Rear Side Door Window Regulator Motor - Right

   • Go To Next Step: If The Specified State 
6. All Ok.