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Repair procedures (plant/service)

If no tampering/abuse can be detected the following tests should be carried out:

  1. Check for correct reluctor attachment at VVT sensor.
  2. Use tester to manually activate the E-box fan for acoustic check.
  3. DME installed according to specification and check to verify installation of spacer plate (to guide airflow in E-Box).
  4. Check wiring harness between VVT motor and DME for soft shorts between the two VVT motor wires and vehicle ground
  5. Defective VVT servo motor (for instance, interturn short circuit) - Replace servo motor and determine whether malfunction is still present (Clear fault
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