Pinpoint Test H: Flash Code 3 - Speed Control DEACTIVATOR Switch Circuit Failure

H1 CHECK THE SPEED CONTROL DEACTIVATOR SWITCH INPUT TO THE SPEED CONTROL ACTUATOR
- Disconnect: Speed Control Actuator C122.
- Key in ON position.
- Measure the voltage between the speed control actuator C122-9, circuit 248 (TN/OG), harness side and ground.
  
  Fig 1: Checking Speed Control Deactivator Switch Input To Speed Control Actuator
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes : INSTALL a new speed control actuator. REFER to SPEED CONTROL ACTUATOR in this article. REPEAT the self-test.

No : GO to H2.
H2 CHECK THE SPEED CONTROL DEACTIVATOR SWITCH
- Key in OFF position.
- Disconnect: Speed Control Deactivator Switch C277.
- Measure the resistance between the speed control deactivator switch terminal 1, and the speed control deactivator switch terminal 2, component side.
  
  Fig 2: Checking Speed Control Deactivator Switch
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes : GO to H3.

No : INSTALL a new speed control deactivator switch. REFER to SPEED CONTROL DEACTIVATOR SWITCH in this article. REPEAT the self-test.
H3 CHECK THE SPEED CONTROL DEACTIVATOR SWITCH VOLTAGE
- Key in ON position.
- Measure the voltage between the speed control deactivator switch C277-1, circuit 101 (GY/YE), harness side and ground.
  
  Fig 3: Checking Speed Control Deactivator Switch Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes : REPAIR circuit 248 (TN/OG) as necessary. REPEAT the self-test.

No : VERIFY the SJB fuse 27 (5A) is OK. If OK, GO to H4.
H4 CHECK CIRCUIT 101 (GY/YE) FOR AN OPEN
- Key in OFF position.
- Disconnect: SJB C2280d.
- Measure the resistance between the speed control deactivator switch C277-1, circuit 101 (GY/YE), harness side and the SJB C2280d-29, circuit 101 (GY/YE), harness side.
  
  Fig 4: Checking Circuit 101 (GY/YE) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes : GO to H5.

No : REPAIR the circuit. REPEAT the self-test.
H5 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still presents?
Yes : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . REPEAT the self-test.

No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.