Pinpoint Test V: C0020:13, C0020:71

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

V1 CHECK THE ABS MODULE PUMP MOTOR (PMP_MOTOR) ACTIVE COMMAND
- Ignition ON.
- Using a diagnostic scan tool, toggle the PMP_MOTOR active command ON and listen for the ABS pump motor noise.
Does the ABS pump motor run for approximately 2 seconds?
1. Yes : TOGGLE the PMP_MOTOR active command OFF. GO to V2 .
2. No : TOGGLE the PMP_MOTOR active command OFF. GO to V3.
V2 CHECK FOR FAULT REPEATABILITY
- Using a diagnostic scan tool, clear the ABS module DTCs .
- Drive the vehicle at speeds greater than 20 km/h (12 mph).
- Bring the vehicle to a safe stop.
- Using a diagnostic scan tool, carry out the ABS module self-test.
Are DTCs C0020:13 or 71 retrieved?
1. Yes : GO to V3 .
2. No : For all other DTCs , REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . If no DTCs are present, the system is operating correctly at this time.
V3 CHECK THE ABS MODULE GROUND EYELET AT THE CHASSIS
- Ignition OFF.
- Remove the bolt retaining the ABS module ground to the vehicle.
- Clean the body mating surface and ground eyelets.
- Position the ground eyelets and install the bolt.
- Ignition ON.
- Using a diagnostic scan tool, clear the ABS module DTCs .
- Drive the vehicle at speeds greater than 20 km/h (12 mph).
- Bring the vehicle to a safe stop.
- Using a diagnostic scan tool, carry out the ABS module self-test.
Are DTCs C0020:13 or C0020:71 retrieved?
1. Yes : GO to V4 .
2. No : If no DTCs are present, the concern was most likely caused by a loose or corroded connector.
  For all other DTCs , REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL .

V4 CHECK THE PUMP MOTOR VOLTAGE SUPPLY TO THE ABS MODULE

Ignition OFF.
Disconnect ABS module C135 .

Measure:

Positive Lead	Measurement/Action	Negative Lead
C135-1		Ground

Is the voltage greater than 11 volts?

Yes : GO to V5 .
No : VERIFY that BJB fuse 5 (50A) is OK. See OEM FUSE AND RELAY INFORMATION . If OK, REPAIR the circuit. If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the cause for the circuit short.

V5 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN

Disconnect the battery negative cable. REFER to BATTERY DISCONNECT .

Measure:

Positive Lead	Measurement/Action	Negative Lead
C135-16		Ground

Is the resistance less than 3 ohms?

Yes : GO to V6 .
No : REPAIR the circuit.

V6 CHECK FOR CORRECT ABS MODULE OPERATION
- Ignition OFF.
- Inspect ABS module C135 .
- Repair:
  - corrosion (install new connector or terminal - clean module pins)
  - damaged or bent pins - install new terminals/pins
  - pushed-out pins - install new pins as necessary
- Connect ABS module C135 . Make sure it seats and latches correctly.
- Connect the battery negative cable. REFER to BATTERY DISCONNECT .
- Operate the system and determine if the concern is still present.
Is the concern still present?
1. Yes : CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.
  For vehicles equipped with adaptive cruise control, if no TSBs address this concern, INSTALL a new ABS module and HCU . REFER to HYDRAULIC CONTROL UNIT (HCU) . For vehicles not equipped with adaptive cruise control, if no TSBs address this concern, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . DRIVE the vehicle at speeds greater than 20 km/h (12 mph). REPEAT the ABS module self-test. If the DTC returns, INSTALL a new HCU . REFER to HYDRAULIC CONTROL UNIT (HCU) .
2. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.