Brake Blending Separation Valve Performance

Where it lives

For C05AB, start at the valve the description names.

Check these first

• A brake blending separation valve that does not move to command
• Contamination blocking the separation valve inside the ABS unit
• A failed valve solenoid winding
• A stuck valve holding blended pressure
• A control module fault driving the separation valve

What to do next

1. Command the separation valve with a scan tool and listen for movement
2. Check the valve connector and wiring for damage
3. Measure the valve solenoid resistance
4. Flush the hydraulic unit if contamination is suspected
5. Replace the brake blending separation valve or unit if it stays stuck
6. Clear the code and retest

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