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Home >> Pontiac >> 2005 >> Aztek Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0161 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. 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. 3:  This step checks if there is other DTCs that can cause the BPPS failure.
  2. 7:  Checks to see if the DTC will reset as current.
DTC C0161

Step Action Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views  and Body Control System Connector End Views in Body Control System
1
  1. In addition to the DTC C0161 that is set in the EBCM, perform the following.
  2. Select the display DTCs function on the scan tool for the BCM.
Does the scan tool display DTC C0277, C0278 or C0870?		 Go to Diagnostic Trouble Code (DTC) List in Lighting Systems Go to Step 2 
2 Select the display DTCs function on the scan tool for the EBCM.
Does the scan tool display DTC U1000 or U1064?		 Diagnostic Trouble Code (DTC) List in Data Link Communications Go to Step 3 
3  Verify the state of the brake lamps with the brake pedal RELEASED.
Are all of the stop lamps ON?		 Go to Stop Lamps Always On in Lighting Systems Go to Step 4 
4 Select the display DTCs function on the scan tool for the EBCM.
Does the scan tool display DTC C0131 or C0132?		 Go to Diagnostic Trouble Code (DTC) List  Go to Step 5 
5
  1. Select the VSES data display.
  2. In the data display, read the brake pressure value with the brake pedal NOT APPLIED.
Does the scan tool value read greater then 15 bars (218 psi)?		 Go to Brake Fluid Pressure Sensor Replacement  Go to Step 6 
6 Confirm that the BPPS is adjusted to the correct position.
Is the brake pedal position sensor adjustment correctly.		 Go to Step 7  Go to Learn Home Procedure in the BCM special function
7 
  1. Use the scan tool in order to clear the DTCs.
  2. Test drive the vehicle. Refer to Diagnostic Test Drive .
Did DTC C0161 reset?		 Go to Step 8  Go to Diagnostic Aids
8 Replace the BPPS. Refer to Brake Pedal Position Sensor Replacement .
Did you complete the replacement?		 Go to Step 9  -
9
  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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