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Diagnostic Procedure Cadillac ELR I

Mechanical ~109 words
  1. Place vehicle into service mode and connect GDS.
  2. Without compression gauge attached Crank the engine using the "Compression Test" function in GDS to remove any foreign substances from the cylinders.
  3. Install EN-48248 gauge in the spark plug bore for the cylinder that is being checked.
  4. Using the "Compression Test" function in GDS, select "crank" on the diagnostics screen and let the test run for the cylinder being tested. The engine will now crank then stop.
  5. Record the compression reading for the cylinder just tested.
  6. Repeat starting at step 7 for all remaining cylinders. All 4 cylinders must be tested to obtain valid test results. Record the readings.

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