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Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0132 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the EBCM harness at the Brake Fluid Pressure Sensor.
  2. Ignition OFF, with a DMM test for less than 5.0 ohms between the Brake Fluid Pressure Sensor low reference circuit terminal 1 and ground.
    • If greater than the specified range, with the DMM test the low reference circuit terminal 3 for an open/high resistance. If the circuit tests normal, replace the EBCM.
  3. Ignition ON, with a DMM test for 0.25-4.75 volts between the Brake Fluid Pressure Sensor 5-volt reference circuit terminal 3 and ground.
    • If less than the specified range, with the DMM test the 5-volt reference circuit terminal 3 for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
    • If greater than the specified range, with the DMM test the 5-volt reference circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the EBCM.
  4. With the DMM, verify the Brake Fluid Pressure Sensor signal circuit terminal 2 range is less than 0.25 volts.
    • If greater than the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the EBCM.
  5. Install a 3A fused jumper wire between the Brake Fluid Pressure Sensor signal circuit terminal 2 and the Brake Fluid Pressure Sensor 5-volt reference circuit terminal 3. With a DMM, verify the voltage value is greater than 4.75 volts.
    • If less than the specified value, test the signal circuit terminal 2 for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  6. If all circuits test normal, test or replace the Brake Fluid Pressure Sensor.
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