Auto Bleed Procedure
CAUTION:
Perform MANUAL BLEEDING PROCEDURE or PRESSURE BLEEDING PROCEDURE before performing auto bleed procedure.
NOTE:
Auto bleed procedure is used to provide a complete bleed procedure on Anti-Lock Brake System/Traction Control System (ABS/TCS) equipped vehicles. This procedure cycles system valves and runs the pump to purge air from circuits normally closed during non ABS/TCS (normal) brake system operation and bleeding. This procedure should be used when air is suspected in secondary circuits or when Brake Pressure Modulator (BPM) valve has been replaced.
- Raise and support vehicle. Remove wheels. Inspect brake system for leaks or damage. Repair as necessary before continuing. Bleed base brake system. See MANUAL BLEEDING PROCEDURE or PRESSURE BLEEDING PROCEDURE .
- Ensure battery is fully charged. Connect scan tool to DLC. Turn ignition on, with engine off. Using scan tool, establish communications with the ABS/TCS system. Select ABS/TCS then Special Function and then AUTOMATED BLEED PROCEDURE.
- Install Bleeder Adapter (J-35589) to brake master cylinder. Pressurize bleeder to 30 psi (2.1 kg/cm2 ). Connect bleeder hose to adapter, and bleed air from adapter.
- Bleed basic brake system following scan tool directions until desired brake pedal height is achieved. If bleed procedure is aborted, a malfunction is present. If a DTC is present, diagnose affected DTC first. If brake pedal is spongy, perform conventional brake bleeding procedure again. See MANUAL BLEEDING PROCEDURE or PRESSURE BLEEDING PROCEDURE .
- After diagnosing affected DTC or performing conventional brake system bleeding procedure, go to next step.
- When desired pedal height is achieved, depress brake pedal to check for firmness. Disconnect scan tool. Check brake fluid level. Road test vehicle.