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EuroVan (2.5)

  1. Connect Scan Tester (VAG 1551) to Data Link Connectors (DLC) located in fold-down storage shelf in front of relay panel. With scan tester in READ MEASUREMENT BLOCK function, ensure coolant temperature is more than 185°F (85°C) as displayed in channel No. 1 of scan tester.
  2. With scan tester still in READ MEASUREMENT BLOCK function, read MAP sensor value in channel No. 4 of scan tester. Value must be 20-40 percent and fluctuating.
  3. If a constant value of roughly 90 percent is displayed, check for leaks in vacuum hose to ECM or replace ECM as necessary. After repairs, erase DTC memory (if applicable) and select END DATA TRANSFER function.
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