PINPOINT TEST A: DTCs C0020:13 AND C0020:71

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

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

NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

A1 CHECK THE PUMP MOTOR (PMP_MOTOR) ACTIVE COMMAND
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
- Toggle the PMP_MOTOR active command ON.
Listen for the ABS pump motor noise, does the ABS pump motor run for approximately 2 seconds?
- Yes : GO to A2 .
- No : TOGGLE the PMP_MOTOR active command OFF. GO to A3.
A2 CHECK FOR FAULT REPEATABILITY
- Clear the ABS module DTCs.
- Drive the vehicle at speeds greater than 20 km/h (12 mph).
- Bring the vehicle to a safe stop.
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
Are DTCs C0020:13 or C0020:71 retrieved?
- Yes : GO to A3 .
- No : If any other DTCs are present, REFER to the ABS MODULE DTC CHART .
  If no DTCs are present, the system is operating correctly at this time.
A3 CHECK THE ABS MODULE GROUND EYELET AT THE CHASSIS
- Ignition OFF.
- Remove the bolt retaining G103 near the battery.
  - Clean the body mating surface and ground eyelets.
  - Install the ground eyelet to the chassis with the retaining bolt.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
Is the concern still present?
- Yes : GO to A4 .
- No : The concern was caused by a loose or corroded connector. CLEAR the DTCs. REPEAT self-test.
A4 CHECK THE PUMP MOTOR VOLTAGE SUPPLY TO THE ABS MODULE
- Ignition OFF.
- Disconnect: ABS Module C135 .
- Measure the voltage between ABS module C135-1 , circuit SBB05 (GY/RD), harness side and ground.
  
  Fig 1: Measuring Voltage Between ABS Module C135-1, Circuit SBB05 (GY/RD) And Ground
  Courtesy of FORD MOTOR CO.
Is the voltage greater than 10 volts?
- Yes : GO to A5 .
- No : VERIFY that BJB fuse 5 (40A) is OK. If OK, REPAIR circuit SBB05 (GY/RD). If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the cause of the circuit short. CLEAR the DTCs and REPEAT the self-test.
A5 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Battery Negative Cable.
- Measure the resistance between ABS module C135-16 , circuit GD121 (BK/YE), harness side and ground.
  
  Fig 2: Measuring Resistance Between ABS Module C135-16, Circuit GD121 (BK/YE) And Ground
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : GO to A6 .
- No : REPAIR circuit GD121 (BK/YE) for an open circuit. CLEAR the DTCs. REPEAT the self-test.
A6 CHECK FOR CORRECT ABS MODULE OPERATION
- Connect: Battery Negative Cable.
- Check ABS module C135 for:
  - corrosion
  - pushed-out pins
  - spread terminals
- Connect: ABS Module C135 .
- Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
Is the concern still present?
- Yes : For vehicles without adaptive cruise control, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
  For vehicles with adaptive cruise control, INSTALL a new HCU . REFER to HYDRAULIC CONTROL UNIT (HCU) . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.