Visual Inspection and Pre-Checks
- Y1: GUIDED DIAGNOSTIC QUESTION
- This step is for vehicles equipped with an EPB system or an EBB unit.
Were you sent here from diagnostics in the Parking Brake and Actuation article or the Power Brake Actuation article?
Yes No Go to Y3. Go to Y2 - Y2: RECHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE FOR DTC (DIAGNOSTIC TROUBLE CODE)
- Ignition ON.
- Clear the ABS DTCs.
- Put the ABS module in sleep mode by performing the following steps:
- With ALL doors closed, set the ignition from ON to OFF.
- Disconnect the diagnostic scan tool.
- Open the door, exit the vehicle and close the door.
- Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
- Ignition ON.
- Using a diagnostic scan tool, carry out the ABS self-test.
- Record the ABS module DTCs.
NOTE: If DTC U3000:4B is present, allow the vehicle to cool for a minimum of 30 minutes.Are any of the DTCs from the Fault Trigger Conditions table present and active in the ABS module?
Yes No Go to Y3. The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - Y3: CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION
- Ignition OFF.
- Disconnect ABS Module connector C135 .
- Using a good light source, INSPECT the electrical connector for the following:
- Corrosion - INSTALL new connector or terminal and clean the module pins
- Damaged or bent pins - INSTALL new terminals or pins
- Pushed-out pins - INSTALL new pins as necessary
- Spread terminals - INSTALL new terminals as necessary
- Connect ABS module connector C135 . Make sure the connector seats and latches correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes No CHECK OASIS for any service articles: TSB, GSB, SSM or FSA.
If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.
If no service articles address this concern, INSTALL a new EBB module. REFER to ELECTRIC BRAKE BOOSTER (EBB)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.