DD15 Faulty Pressure Control Cap Troubleshooting

Check as follows:‪

  1. Perform coolant pressure control cap tests; refer to EPA07 DD15 Workshop Manual (DDC-SVC-MAN-0002), “Cooling System” chapter.
  2. Check the test results.
    1. If the cap passes the test; refer to “11.4 Defective Coolant Hoses” .
    2. If the cap fails the test, remove and replace pressure control cap; refer to OEM guidelines.

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