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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 633 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0163 or C0164: Brake Pedal Position Sensor (BPP) Sensor Circuit >> Test Description
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Test Description

WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 2:  Test for the current state of the BPP sensor.
DTC C0163 or C0164

Step Action Yes No
Schematic Reference: ABS Schematics 
1 Did you perform the ABS Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - ABS 
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the BPP Sensor parameter in the TCS data list.
Does the scan tool display Released?		 Go to Step 3  Go to Step 4 
3
  1. Press the brake pedal.
  2. With a scan tool, observe the BPP Sensor parameter.
Does the BPP Sensor parameter change state?		 Go to Diagnostic Aids Go to Step 4 
4
  1. Turn OFF the ignition.
  2. Inspect the brake pedal position sensor and adjust and/or calibrate if needed. Refer to Brake Pedal Position Sensor Replacement in Lighting Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 5 
5
  1. Turn OFF the ignition.
  2. Disconnect the brake pedal position sensor connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the BPP Sensor parameter.
Does the scan tool display Released?		 Go to Step 8  Go to Step 6 
6 Test the brake pedal position sensor signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 7 
7 Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 9 
8 Inspect for poor connections at the harness connector of the brake pedal position sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
9 Replace the EBCM. Refer to Electronic Brake Control Module Replacement (CTS)  or Electronic Brake Control Module Replacement (CTS-V) .
Did you complete the repair?		 Go to Step 11  -
10 Replace the brake pedal position sensor. Refer to Brake Pedal Position Sensor Replacement in Lighting Systems.
Did you complete the repair?		 Go to Step 11  -
11
  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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