Pinpoint Test B: No Communication With The Driver Seat Module (DSM)

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

B1 CHECK CIRCUIT SBB15 (WH/RD) FOR VOLTAGE
- Key in OFF position.
- Disconnect: DSM C3299c.
- Key in ON position.
- Measure the voltage between the DSM C3299c-1, circuit SBB15 (WH/RD), harness side and ground.
  
  Fig 1: Checking Circuit SBB15 (WH/RD) For Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes : GO to B2.

No : VERIFY the BJB fuse 15 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B2 CHECK CIRCUIT GD126 (BK/WH) FOR AN OPEN
- Measure the resistance between the DSM C3299c-13, circuit GD126 (BK/WH), harness side and ground.
  
  Fig 2: Checking Circuit GD126 (BK/WH) For Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes : REFER to MODULE COMMUNICATIONS NETWORK to continue communication diagnosis.

No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.