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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System And Remote Functions >> Diagnostic Information and Procedures >> Keyless Entry System Malfunction (Passive) >> Circuit/System Testing >> Passive Transmitter Malfunction
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Passive Transmitter Malfunction

  1. Lock the vehicle using the keyless entry transmitter.
  2. Verify that each door and rear compartment unlocks and opens by approaching the vehicle with a valid transmitter and operating their exterior door handle/rear closure touch pad.
    • If both doors and the rear compartment do not unlock/unlatch and open 
    1. Replace the transmitter battery.
    2. Lock the vehicle using the keyless entry transmitter.
    3. Verify that each door and rear compartment unlocks and opens by approaching the vehicle with a valid transmitter and operating their respective release handle/touch pad.
      • If both doors and the rear compartment do not unlock/unlatch and open, replace the keyless entry transmitter.
      • If both doors and the rear compartment unlock/unlatch and open
    4. All OK.
    • If both doors and the rear compartment unlock/unlatch and open 
  3. The concern may be caused by temporary RF interference. Discuss the conditions in which the concern occurs with the customer. RF interference from aftermarket devices such as 2-way radios, power inverters, cellular phone chargers, computers, etc. may cause a system malfunction. High RF traffic areas, such as gas stations which use pay-at-the-pump RF transponders, may also cause interference that could lead to a malfunction.