Pinpoint Test A: No Communication With The TPMS Module/Unable To Enter Self-Test

CAUTION: The Flex Probe Kit must be used for all test connections. Use of standard multimeter probes may damage wiring terminals.

A1 CHECK CIRCUIT 729 (RD/WH) FOR AN OPEN
- Key in OFF position.
- Disconnect: Vehicle Security Module (VSM) C2113b.
- Key in ON position.
- Measure the voltage between VSM C2113b-3, circuit 729 (RD/WH), harness side and ground.
  
  Fig 1: Checking Circuit 729 (RD/WH) For An Open
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes: GO to A2.

No: Verify central junction box (CJB) fuse 5 (7.5A) is OK. If OK, REPAIR circuit 729 (RD/WH) for an open. TEST the system for normal operation.
A2 CHECK CIRCUIT 57 (BK) FOR OPEN
- Key in OFF position.
- Disconnect: VSM C2113a.
- Measure the resistance between vehicle security module (VSM) C2113a-14, circuit 57 (BK) and ground.
  
  Fig 2: Checking Circuit 57 (BK) For Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes: REFER to MODULE COMMUNICATIONS NETWORK .

No: REPAIR circuit 57 (BK) for an open. TEST the system for normal operation.