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Home >> Saturn >> 2003 >> Ion 1 Standard >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C0035, C0040, C0045, C0051 >> Test Description

Test Description

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

  1. 3:  This step tests the wheel speed sensor for the proper resistance value.
  2. 4:  This step ensures that the wheel speed sensor generates the proper voltage.
DTC C0035-C0051

Step Action Value(s) Yes No
Schematic Reference:  ABS Schematics  
Connector End View Reference: ABS Connector End Views 
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.
  3. Set up the scan tool snap shot feature to trigger for this DTC.
  4. Drive the vehicle at a speed greater than the specified value.
Does the scan tool indicate that this wheel speed DTC set?		 43 km/h (27 mph) Go to Step 3  Go to Diagnostic Aids
3 
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the wheel speed sensor connector.
  3. Measure the resistance across the wheel speed sensor.
Does the resistance measure within the specified range?		 800-1700 Ω Go to Step 4  Go to Step 8 
4 
  1. Spin the wheel.
  2. Measure the AC voltage across the wheel speed sensor.
Does the AC voltage measure greater than the specified value?		 100 mV Go to Step 5  Go to Step 8 
5 Inspect for poor connections at the harness connector of the wheel speed 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 10  Go to Step 6 
6
  1. Disconnect the EBCM harness connector.
  2. Connect the DMM between the sensor signal and the low reference circuit of the EBCM connector.
  3. Test the wheel speed sensor circuits for the following:
    • An open
    • A short to ground
    • A short to voltage
    • Shorted together
Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.Did you find and correct the condition?		 - Go to Step 10  Go to Step 7 
7 Inspect for poor connections at the harness connector for the EBCM. Refer Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 10  Go to Step 9 
8 Replace the wheel speed sensor. Refer to Wheel Bearing/Hub Replacement - Front in Front Suspension or WHEEL BEARING/HUB REPLACEMENT --REAR in Rear in Suspension.
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the EBCM. Refer to Electronic Brake Control Module Replacement .
Did you complete the repair?		 - Go to Step 10  -
10
  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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