Pinpoint Test A: No Communication With The Traction Control Module

Test Step 

A1 CHECK THE VOLTAGE TO THE TRACTION CONTROL MODULE 

• Key in OFF position.
• Disconnect: Traction Control Module C135.
• Key in ON position.
• Measure the voltage between the traction control module C135 pin 4, circuit 15-CF6A (GN/YE), harness side and ground.
  Fig 1: Checking Voltage To Traction Control Module

  Courtesy of FORD MOTOR CO.
• Is the voltage greater than 10 volts? 

Result / Action to Take 

Yes 

Go to A2.

No 

REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

Test Step 

A2 CHECK THE TRACTION CONTROL MODULE GROUNDS 

• Key in OFF position.
• Measure the resistance between the traction control module C135 pin 16, circuit 91-CF6 (BK/YE), harness side and ground; and between the traction control module C135 pin 47, circuit 91-CF13 (BK/BU), harness side and ground.
  Fig 2: Checking Traction Control Module Grounds

  Courtesy of FORD MOTOR CO.
• Are the resistances less than 5 ohms? 

Result / Action to Take 

Yes 

REFER to MODULE COMMUNICATIONS NETWORK .

No 

REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.