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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Diagnostic Information and Procedures >> Brake Booster Pump Motor Malfunction >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Vacuum Pump Relay B+ 2 2 - -
Vacuum Pump Relay Control 2 2 1 -
Vacuum Pump Relay Ground 2 2 - -
Brake Booster Vacuum Sensor 5V Reference C025E 00 C025E 06 C025E 00 -
Brake Booster Vacuum Sensor Signal C025E 06 C025E 06 C025E 01 C025E 1F, C025E 5A
Brake Booster Vacuum Sensor Low Reference - C025E 01 - -
Brake Booster Pump Motor Control 2 2 1 -
Brake Booster Pump Motor Ground 1 2 - -
1. Brake Booster Pump Motor Always ON
2. Brake Booster Pump Motor Always OFF