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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 890 (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 is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. 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 one or more buttons does not sound the tone and illuminate the green light, replace the transmitter battery and retest with the J 43241  . If the condition continues after battery replacement, replace the transmitter.
  4. Attempt to program the transmitter, refer to Transmitter Programming . The transmitter should program.
    • If the transmitter does not program, replace the RCDLR.
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