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Pinpoint Test U : P050F:00: Notes

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Normal Operation and Fault Conditions 

The vacuum pump is mechanically driven by the camshaft. The ABS module uses a sensor mounted on the brake booster to monitor the vacuum. A vacuum pump failure or a leak in the vacuum hoses, check valve, seals, brake booster or front hublock IWE can all cause insufficient vacuum for brake booster operation.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
P050F:00 Brake Assist Vacuum Too Low: No Sub Type Information This DTC sets if the either of these conditions exist. Condition 1: vacuum level in the brake booster is less than -10 kPa (-3 inch Hg) for more than 10 seconds and there are no ABS hydraulic pressure Diagnostic Trouble Codes (DTCs) present and it has been more than 1 minute after engine start or vehicle speed is greater than 1.25 km/h (0.77 mph) for 10 seconds. Condition 2: vacuum level in the brake booster is less than -10 kPa (-3 inch Hg) for more than 1 second and there are ABS hydraulic pressure Diagnostic Trouble Codes (DTCs) present and vehicle speed is greater than 1.25 km/h (0.77 mph) for 10 seconds.

Possible Causes 

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