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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1822 (Information System And Entertainment System) >> Diagnosis And Testing >> Information and Entertainment System >> Pinpoint Tests >> Pinpoint Test AJ: DTC U0184 Or DTC U0184:00 >> Pinpoint Test AJ: DTC U0184 Or DTC U0184:00

Pinpoint Test AJ: DTC U0184 Or DTC U0184:00

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. AJ1 CHECK FOR LOST COMMUNICATION DTCs 
    • Ignition ON.
    • Clear continuous DTCs from all modules.
    • Ignition OFF.
    • Ignition ON.
    • Wait at least 10 seconds.
    • Retrieve all continuous DTCs from all modules.
    • Is DTC U0184 or DTC U0184:00 set in any audio system module? 
    • Yes  : GO to AJ2.
    • No  : The system is operating correctly at this time. The DTC may have been set due to an intermittent fault in the network wiring.
  2. AJ2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs 
    • Carry out the self-test for the following modules:
      • ACM
      • Audio DSP module (if equipped)
      • APIM (if equipped)
      • FCIM
      • FDIM
      • GPSM
    • Is DTC B1317, B1318, U3003:16, or U3003:17 recorded in any module? 
    • Yes  : REFER to DTC CHARTS  in this service information.
    • No  : GO to AJ3.
  3. AJ3 CHECK FOR DTC U0184 OR DTC U0184:00 SET IN MULTIPLE MODULES 
    • Review the recorded results from the self-test.
    • Is DTC U0184 or DTC U0184:00 set in more than one audio system module? 
    • Yes  : GO to AJ4.
    • No  : If there is an observable symptom, REFER to the appropriate Symptom Chart in this service information. If there is no observable symptom, CHECK the MS-CAN wiring between the ACM and the module in question for an intermittent fault.
  4. AJ4 CHECK FOR CORRECT ACM OPERATION 
    • Disconnect all the ACM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the ACM connectors and make sure they seat correctly.
    • Is the concern still present? 
    • Yes  : INSTALL a new ACM. REFER to AUDIO CONTROL MODULE (ACM) - FUSION, MILAN  or AUDIO CONTROL MODULE (ACM) - MKZ  in this service information. CLEAR all continuous DTCs. TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all continuous DTCs. REPEAT the self-test for the module(s) that set DTC U0184 or DTC U0184:00.
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