C0020:13, C0020:71

• Ignition OFF.
• Disconnect ABS  module C135  .
• Using a good light source, inspect each connector terminal for any corrosion.
• Inspect the connector for any pushed-out terminals.
• Using a suitable mating terminal, check each connector terminal for deformed or enlarged contacts by comparing the mating terminal's fit between each of the following pins:
  • C135-1 
  • C135-14 

Is connector free of terminal corrosion, pushed-out terminals and spread terminals? 

1. Yes  : GO to H2 
2. No  : REPAIR the affected terminal.

   Refer to OEM CONNECTOR REPAIR PROCEDURES -- (EXCEPT HYBRID) for additional information.

• Connect ABS  module C135  .
• Ignition ON.
• Using a diagnostic scan tool, activate the ABS  pump motor (PMP_MTR) active command.
• Listen for the ABS  pump motor noise.

Does the ABS pump motor run for approximately 2 seconds? 

1. Yes  : GO to H3 
2. No  : GO to  H4

• Using a diagnostic scan tool, clear the ABS  module Diagnostic Trouble Codes (DTCs).
• Ignition OFF.
• Ignition ON.
• Test drive the vehicle at speeds greater than 20 km/h (12 mph) and carry out at least 1 ABS  stop.
• Ignition OFF.
• Ignition ON.
• Using a diagnostic scan tool, carry out the ABS  module self-test.
• Retrieve and record all ABS  module Diagnostic Trouble Codes (DTCs).

Are any ABS module Diagnostic Trouble Codes (DTCs) retrieved? 

1. Yes  : For DTC  C0020:13 and 71, GO to  H6

   For all other ABS  module Diagnostic Trouble Codes (DTCs), GO to the DTC CHART: ANTI-LOCK BRAKE SYSTEM (ABS) MODULE .

2. No  : The concern that caused the DTC  is not present at this time.

   DISCONNECT and INSPECT ABS  module C135  . CLEAR or REPAIR the connector as necessary. ADDRESS the root cause of any connector or pin issues.

• Ignition OFF.
• Disconnect ABS  module C135  .
• Measure:

  Positive Lead	Measurement/Action	Negative Lead
  C135-1		Ground

Is the voltage greater than 11 volts? 

1. Yes  : GO to H5 
2. No  : VERIFY BJB  fuse 82 (60A) is OK. If OK, REPAIR the circuit.

   If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION -- (EXCEPT HYBRID) to identify the cause of the circuit short.

• Ignition OFF.
• Disconnect the battery negative cable.

  REFER to: BATTERY DISCONNECT AND CONNECT .

• Measure:

  Positive Lead	Measurement/Action	Negative Lead
  C135-14		Ground

Is the resistance less than 3 ohms? 

1. Yes  : GO to H6 
2. No  : REPAIR the circuit.

• Ignition OFF.
• Disconnect and inspect ABS  module C135  (if not previously disconnected).
• Repair:

  corrosion (install new connector or terminal - clean module pins)

  damaged or bent pins - install new terminals or pins

  pushed-out pins - install new pins as necessary

• Connect ABS  module C135  . Make sure it seats and latches correctly.
• Operate the system and determine if the concern is still present.

Is the concern still present? 

1. Yes  : CHECK OASIS  for any applicable Technical Service Bulletins (TSBs). If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW the TSB  instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ABS  module and HCU  assembly.

   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.