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Home >> Audi >> 2015 >> A4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 712 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems - Without Intelligent Access (IA) >> Pinpoint Tests >> Pinpoint Test Q : The Keyless Entry Keypad Illumination Is Always On >> Pinpoint Test Q : The Keyless Entry Keypad Illumination Is Always On

Pinpoint Test Q : The Keyless Entry Keypad Illumination Is Always On

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  1. Q1 CHECK THE KEYLESS ENTRY KEYPAD ILLUMINATION

    NOTE: It is normal operation for the keypad to illuminate when the illuminated entry/exit feature is active. Make sure all the doors are closed and the feature times out.

    • Ignition ON.
    • Wait 45 seconds and observe the keyless entry keypad illumination.

    Does the keyless entry keypad continue to illuminate? 

    Yes  GO to  Q2.
    No  The system is operating correctly. INFORM the customer of the normal operation of the keyless entry keypad illumination.

  2. Q2 ISOLATE THE BCM

    • Ignition OFF.
    • Ignition ON.

    Does the keyless entry keypad continue to illuminate? 

    Yes  GO to  Q3.
    No  GO to  Q4.

  3. Q3 CHECK THE BCM KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: Keyless Entry Keypad C500 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C500-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad .

  4. Q4 CHECK FOR CORRECT BCM OPERATION

    • Disconnect and inspect all the BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK On-Line Automotive Service Information System(OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, Refer to BCM Hardware Testing .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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