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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 131 (Keyless Entry System & Remote Functions) >> Diagnostic Information and Procedures >> DTC B3105 >> 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 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 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 correct, replace the transmitter.
  2. Place the transmitter on the test pad of the J 43241  and press each button of the transmitter one at a time. See Special Tools . 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  . See Special Tools . If the condition continues after battery replacement, replace the transmitter.
  3. Attempt to program the transmitter, refer to Transmitter Programming . The transmitter should program.
    • If the transmitter does not program, test the keyless entry antenna for an open/high resistance. If the circuit tests normal, replace the RCDLR.
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