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Warning: Refer to Brake Fluid Irritant Warning in the Preface section.
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution in the Preface section.
Note: Before performing the Antilock Brake System (ABS) Automated Bleed Procedure, first perform a pressure bleed of the base brake system. Refer to Hydraulic Brake System Bleeding : Pressure → Manual. The automated bleed procedure is recommended when one of the following conditions exists: • Base brake system bleeding does not achieve the desired pedal height or feel. • Extreme loss of brake fluid has occurred. • Air ingestion is suspected in the secondary circuits of the hydraulic brake modulator assembly.
The ABS Automated Bleed Procedure uses a scan tool to cycle the system solenoid valves and run the pump in order to purge any air from the secondary circuits. These circuits are normally closed off and are only opened during system initialisation at vehicle start up and during ABS operation. The automated bleed procedure opens these secondary circuits and allows any air trapped in these circuits to flow out toward the brake callipers.
Caution: The Auto Bleed Procedure may be terminated at any time during the process by pressing the EXIT button. No further Scan Tool prompts pertaining to the Auto Bleed procedure will be given. After exiting the bleed procedure, relieve bleed pressure and disconnect bleed equipment per manufacturers instructions. Failure to properly relieve pressure may result in spilled brake fluid causing damage to components and painted surfaces.
• | If a DTC is detected, refer to Diagnostic Trouble Code (DTC) List - Vehicle , and diagnose the appropriate DTC. |
• | If the brake pedal feels spongy, perform the conventional brake bleed procedure again. Refer to Hydraulic Brake System Bleeding : Pressure → Manual . |
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