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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 893 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0201 (Equal to or over 8600 GVW) >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. 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. 3:  A shorted ABS pump motor may damage the contacts within the system relay. It is imperative that the steps in the table be followed to prevent damage to a replacement EBCM.
DTC C0201 (Equal to or over 8600 GVW)

Step Action Values Yes No
Schematic Reference: Antilock Brake System Schematics 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Use a scan tool in order to clear the DTCs.
  2. Use the scan tool in order to perform an Antilock Brake System (ABS) Function Test.
Does the DTC set?		 - Go to Step 3  Go to Diagnostic Aids
3 
  1. Separate the electronic brake control module (EBCM) from the brake pressure l modulator valve (BPMV). Refer to Electronic Brake Control Module Replacement (JD9, JF3, JF7)  or Electronic Brake Control Module Replacement (JH6, JH7) .
  2. Use a DMM in order to measure the resistance across the ABS pump motor.
Does the resistance measure within the specified range?		 0.3-1.0 Ω Go to Step 4  Go to Step 6 
4 Use a DMM in order to measure the resistance between the high side of the pump motor and a good ground.
Does the resistance measure less than the specified value?		 0L Go to Step 6  Go to Step 5 
5 Replace the EBCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 7  -
6
IMPORTANT: Following EBCM replacement, use the scan tool to perform the Tire Size Calibration procedure.
  1. Replace the EBCM, refer to Control Module References for replacement, setup, and programming.
  2. Replace the BPMV, refer to Brake Pressure Modulator Valve Replacement (JD9, JF3, JF7)  or Brake Pressure Modulator Valve Replacement (JH6, JH7) .
Did you complete the replacements?		 - Go to Step 7  -
7
  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 3  System OK
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