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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 340 (Keyless Entry System) >> 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 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the transmitter being used is a correct transmitter for the vehicle.
    • If not the correct transmitter, 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. The tester should sound a tone and illuminate a green light when each button is pressed.
    • If any of the buttons do not sound the tone and illuminate the green light, replace the transmitter battery. Retest with the J 43241. If the transmitter continues to malfunction, replace the affected transmitter.
  3. Verify the scan tool Fob Programmed parameter for the transmitter being used is Yes.
    • If not the specified value, program the applicable transmitter.
  4. Press each transmitter button. Verify the scan tool Fob Function parameter for the transmitter being used responds to each button press.
    • If the parameter does not respond, test the keyless entry antenna for an open/high resistance. If all circuits test normal, replace the RCDLR.
  5. If all circuits test normal, test or replace the RCDLR.
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