Pinpoint Test M: The SDARS Module Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. 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.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

M1 CHECK THE SDARS MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: SDARS Module C4344.
- Ignition ON.
- Measure the voltage between the SDARS module C4344-9, circuit CBP13 (GY/BN), harness side and ground.
  
  Fig 1: Measuring Voltage Between SDARS Module C4344-9, Circuit CBP13 (GY/BN) And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes: GO to M2 .
- No: VERIFY the SJB fuse 13 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the SYSTEM WIRING DIAGRAMS for Edge or SYSTEM WIRING DIAGRAMS for MKX to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
M2 CHECK THE SDARS MODULE GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the SDARS module C4344-3, circuit GD148 (BK/YE), harness side and ground.
  
  Fig 2: Measuring Resistance Between SDARS Module C4344-3, Circuit GD148 (BK/YE) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to M3 .
- No: REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
M3 CHECK THE MS-CAN CIRCUITS BETWEEN THE SDARS MODULE AND THE DLC FOR AN OPEN
- Measure the resistance between the SDARS module C4344-1, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side.
  
  Fig 3: Measuring Resistance Between SDARS Module C4344-1, Circuit VDB06 (GY/OG) And DLC C251-3, Circuit VDB06 (GY/OG)
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the SDARS module C4344-7, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side.
  
  Fig 4: Measuring Resistance Between SDARS Module C4344-7, Circuit VDB07 (VT/OG) And DLC C251-11, Circuit VDB07 (VT/OG)
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
- Yes: CONNECT the negative battery cable. GO to M4 .
- No: REPAIR the circuit .
  CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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?
- Yes: INSTALL a new SDARS module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS CLEAR the DTCs. REPEAT the network test with the scan tool.
- 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.