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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 796 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> Keyless Entry System Inoperative >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the transmitter is the correct transmitter for the vehicle.
    • If not the correct transmitter, replace the transmitter.
  2. Verify the scan tool FOB Programmed parameter is Yes.
    • If not Yes, program the transmitter.
  3. Place the transmitter on the test pad of the J 43241  and press each button of the transmitter one at a time. The tester should sound a tone and illuminate a green light when each button is pressed.
    • If none of the buttons sounds the tone and illuminates the green light, replace the battery.
    • If one or more of the buttons sounds the tone and illuminates the green light, replace the transmitter.
  4. Verify the scan tool FOB Function parameter responds to every function on the transmitter.
    • If it does not respond to every function, replace the RCDLR module.
  5. Replace the transmitter.
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