Pinpoint Test

1. Inspect the brake pedal position switch and brake pedal assembly. Verify there is no brake pedal pressure unintentionally applied due to incorrect brake pedal position switch or brake pedal installation.

Are the brake pedal position switch and brake pedal OK? 

1. Yes: GO to 2  .
2. No: REPAIR or INSTALL new components as necessary. REFER to BRAKE PEDAL AND BRACKET or REFER to STOPLAMP SWITCH .

1. Ignition ON.
2. Using a scan tool, clear all CMDTCs  .
3. Test drive the vehicle at speeds greater than 32 kmh (19.9 mph).
4. Using a scan tool, carry out the ABS module self-test.

Are DTCs C0044:28, C0044:49 and/or C0044:64 present? 

1. Yes: GO to 3  .
2. No: The system is operating correctly at this time. The concern may have been caused by air trapped in the hydraulic brake system.

1. Verify all ABS module-to-HCU fasteners are tightened to their correct torque specifications. REFER to Torque Specifications .

Are the fasteners tightened to the correct specifications? 

1. Yes: If the vehicle is not equipped with adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . GO to 4  .

   If the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU. REFER to Hydraulic Control Unit (HCU) . Note ABS module and HCU are removed as an assembly.

2. No: TIGHTEN all ABS module-to-HCU fasteners. GO to 4  .

1. Ignition ON.
2. Using a scan tool, clear all CMDTCs  .
3. Test drive the vehicle at speeds greater than 32 kmh (19.9 mph).
4. Ignition ON.
5. Using a scan tool, carry out the ABS module self-test.

Are DTCs C0044:28, C0044:49 and/or C0044:64 present? 

1. Yes: If the vehicle is not equipped with adaptive cruise control, INSTALL a new HCU. REFER to Hydraulic Control Unit (HCU) .

   If the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU. REFER to Hydraulic Control Unit (HCU) . Note ABS module and HCU are removed as an assembly.

2. No: Repairs complete. The system is operating correctly at this time.