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Home >> Cadillac >> 2014 >> CTS V, 4D Sedan, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 70 (Keyless Entry System And Remote Functions - Coupe And Wagon) >> Diagnostic Information and Procedures >> Electronic Key Not Detected >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the harness connector at the console passive antenna.
  2. Install a DMM between the signal circuit terminal A and the low reference circuit terminal B. Set the DMM to capture AC voltage using the MIN MAX function.
  3. Attempt to start the vehicle. Verify the DMM captured an AC voltage signal.
    • If an AC voltage was not captured, test the signal circuit and the low reference circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the RCDLR.
  4. If all circuits test normal, test or replace the console passive antenna.
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