Test de compresie

This function is used to perform a compression test. The function performs an analysis of the compression ratio for each engine cylinder.
Fuel to the injectors will be disabled during this test.
Note:
If the result of one cylinder shows a deviation that is more than 6 rpm compared with the measured engine speed for the cylinder, this cylinder most likely have a compression problem.
If the vehicle is equipped with the functionality "TIP start", you must disable it in the Gateway module (TIPM or FCM). Misc. Functions -> Temporary TIP start disable.
Preconditions for the test:
Procedure:
  1. Start the function, press OK.
  2. When a dialogue box with data lists is shown, please start cranking the engine for about 10 seconds.
  3. The test should be repeated three times to get a statistical based result.