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Pinpoint Test M: The Satellite Digital Audio Receiver System (SDARS) Module Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. M1 CHECK THE SDARS MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SDARS Module C4300
      • Fig 1: Checking SDARS Module Voltage Supply Circuit For An Open
      GF0018311Courtesy of FORD MOTOR CO.
    • Measure the voltage between the SDARS module C4300-9, circuit SBP15 (WH/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  M2.
    2. NO  : VERIFY the smart junction box (SJB) fuse 20 (7.5A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  2. M2 CHECK THE SDARS MODULE GROUND CIRCUIT FOR AN OPEN 
      Fig 2: Checking SDARS Module Ground Circuit For An Open
      GF0018312Courtesy of FORD MOTOR CO.
    • Measure the resistance between the SDARS module C4300-3, circuit GD148 (BK/YE), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  M3.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  3. M3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE SDARS MODULE FOR AN OPEN 
      Fig 3: Checking MS-CAN Circuit For Open
      GF0018313Courtesy of FORD MOTOR CO.
    • Measure the resistance between the SDARS module C4300-1, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side.
      • Fig 4: Checking MS-CAN Circuit For Open
      GF0018314Courtesy of FORD MOTOR CO.
    • Measure the resistance between the SDARS module C4300-7, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  M4.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  4. M4 CHECK FOR CORRECT SDARS MODULE OPERATION 
    • Disconnect the SDARS module connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the SDARS module connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new SDARS module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. CLEAR the DTCs. REPEAT the network test with the scan tool.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.
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