Pinpoint Test E: No Communication With The Power Steering Control Module

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

E1 CHECK THE POWER STEERING CONTROL MODULE CIRCUIT 838 (LG/VT) FOR VOLTAGE
- Key in OFF position.
- Disconnect: Power Steering Control Module C1463b.
- Measure the voltage between the power steering control module C1463b-1, circuit 838 (LG/VT), harness side and ground.
  
  Fig 1: Measuring Voltage Between Power Steering Control Module C1463b-1, Circuit 838 (LG/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : GO to E2.
- No : REPAIR the circuit. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test.
E2 CHECK THE POWER STEERING CONTROL MODULE CIRCUIT 601 (LB/PK) FOR VOLTAGE
- Disconnect: Power Steering Control Module C1463a.
- Key in ON position.
- Measure the voltage between the power steering control module C1463a-1, circuit 601 (LB/PK), harness side and ground.
  
  Fig 2: Measuring Voltage Between Power Steering Control Module C1463a-1, Circuit 601 (LB/PK), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : GO to E3.
- No : REPAIR the circuit. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test.
E3 CHECK THE POWER STEERING CONTROL MODULE CIRCUIT 57 (BK) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the power steering control module C1463b-3, circuit 57 (BK), harness side and ground.
  
  Fig 3: Measuring Resistance Between Power Steering Control Module C1463b-3, Circuit 57 (BK), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 2 ohms?
- Yes : REFER to MODULE COMMUNICATIONS NETWORK to continue communication diagnostics.
- No : REPAIR the circuit. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test.