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STEP 4: Blink Codes for Wabco VCS II version ECU

  1. Use the table to identify ABS faults from the ECU Blink Codes recorded in STEP 3: Blink code identification and system response
  2. Links to solutions for common ABS faults can also be found below
  3. Please ensure all necessary Health and Safety precautions are implemented before commencing any repair work
  4. A list of useful ABS Diagnostic Tools is available on this website
  5. If you require further help or information, please contact us

Wabco VCS II version ECU

Blink Code

Problem Area

Action

3

Sensor BU1

  1. Determine sensor location
  2. Check sensor installation
  3. Make necessary repairs

4

Sensor YE1

  1. Determine sensor location
  2. Check sensor installation
  3. Make necessary repairs

5

Sensor BU2

  1. Determine sensor location
  2. Check sensor installation
  3. Make necessary repairs

6

Sensor YE2

  1. Determine sensor location
  2. Check sensor installation
  3. Make necessary repairs

7

External ABS modulator valve

  1. Verify proper electrical installation
  2. Check power supply
  3. Make necessary corrections

9

Internal modulator failure, inlet valve #2

  1. Verify proper installation
  2. If code continues, contact us for assistance

10

Internal modulator failure, inlet valve #1

  1. Verify proper installation
  2. If code continues, contact us for assistance

11

Internal modulator failure, outlet valve

  1. Verify proper installation
  2. If code continues, contact us for assistance

14

Power supply

  1. Verify proper electrical installation
  2. Check power supply
  3. Make necessary corrections

15

ECU failure

  1. Verify proper installation
  2. If code continues, contact us for assistance

16

SAE J1708 Failure

  1. Internal failure
  2. Contact us for assistance

17

SAE J2497 (PLC) Failure

  1. Internal failure
  2. Contact us for assistance

18

Generic I/O failure

  1. Verify proper electrical installation
  2. Check power supply
  3. Make necessary corrections

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