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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 >> DTC B3111 >> 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. Replace the batteries in the transmitter and with the scan tool clear the DTC.
  2. Operate the transmitter three consecutive times. The DTC should not set.
    • If the DTC sets again, test the battery.
  3. If all circuits test normal, test or replace the transmitter.
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