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Test Description

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step tests for DTCs set in the body control module (BCM) lighting systems for a malfunctioning BPPS.
  2. 3:  This step tests for specified voltage on the brake pressure signal circuit.
  3. 4:  This step checks to see if voltage was below specified voltage.
  4. 5:  This step checks to see if voltage was above specified voltage.
  5. 6:  This step checks to see if voltage was above specified voltage of 5-volt reference.
  6. 7:  This step checks to see if 5-volt reference from EBCM is 5 volts.
  7. 8:  This step checks to see if resistance of ground circuit is less than 5 ohms.
  8. 9:  This step tests for short to voltage in the 5-volt reference circuit.
  9. 10:  This step tests for a short to ground, a high resistance or an open in the 5-volt reference circuit.
  10. 11:  This step tests for a short to voltage in the brake pressure sensor signal circuit.
  11. 12:  This step tests for a high resistance or an open in the ground circuit.
  12. 13:  This step checks to brake pressure sensor connector for poor connections.
  13. 14:  This step checks to EBCM connector for poor connections.
DTC C0132

Step Action Value(s) Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2  After performing the Diagnostic System Check, retrieve DTCs set for the brake pedal position sensor (BPPS) in Lighting Systems.
Did the BPPS set DTCs?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the electronic brake control module (EBCM).
  3. Install the J 39700  Universal Pinout Box with the J 39700-530  Cable Adapter between the EBCM and the EBCM harness connector. See Special Tools .
  4. Turn ON the ignition, with the engine OFF.
  5. Using the DMM, measure the voltage between pin 17 and pin 15 of the J 39700  . See Special Tools .
Is the voltage within the specified value?		 0.25-4.75 V Go to Diagnostic Aids Go to Step 4 
4 
  1. Turn OFF the ignition.
  2. Disconnect the brake pressure sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. Using the DMM, measure the voltage between pin 17 and pin 15 of the J 39700  . See Special Tools .
Is the voltage less than the specified value?		 4.75 V Go to Step 5  Go to Step 11 
5 
  1. Turn OFF the ignition.
  2. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the brake pressure sensor and the signal circuit of the brake pressure sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. Using the DMM, measure the voltage between pin 17 and pin 15 of the J 39700  . See Special Tools .
Is the voltage greater than the specified value?		 0.25 V Go to Step 6  Go to Step 9 
6 
  1. Disconnect the fused jumper wire.
  2. Measure the voltage between the 5-volt reference circuit of the brake pressure sensor and the ground circuit of the brake pressure sensor.
Does the voltage measure less than the specified value?		 5 V Go to Step 7  Go to Step 8 
7 
  1. Turn OFF the ignition.
  2. Disconnect the negative battery cable.
  3. Measure the resistance from the ground circuit of the brake pressure sensor to a good ground.
Does the resistance measure less than the specified value?		 5 Ω Go to Step 13  Go to Step 12 
8  Test the 5-volt reference circuit of the brake pressure sensor for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
9  Test the 5-volt reference circuit of the brake pressure sensor for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 10 
10  Test the signal circuit of the brake pressure sensor for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
11  Test the signal circuit of the brake pressure sensor for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
12 
  1. Disconnect the EBCM.
  2. Test the ground circuit of the brake pressure sensor for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 14 
13  Inspect for poor connections at the harness connector of the brake pressure sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 15 
14  Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 17  Go to Step 16 
15 Replace the brake pressure sensor. Refer to Brake Fluid Pressure Sensor Replacement .
Did you complete the replacement?		 - Go to Step 17  -
16
IMPORTANT: Before replacing the EBCM, inspect the brake pedal position sensor for proper adjustment. Refer to Brake Pedal Position Sensor Calibration .
Replace the EBCM. Refer to Control Module References for replacement, setup and programming.Did you complete the replacement?		 - Go to Step 17  -
17
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
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