PULLER GP-CYLINDER PACK 8T2686 - Caterpillar

Some engine symptoms can be unrelated to the electronic control system. Gather information about the complaint that describes the symptoms. Verify that the complaint is not due to normal engine operation.Perform the following steps in order to determine the problem.
Repair all active diagnostic codes.
Gather operator information.
Verify that the complaint is not due to normal engine operation.
Perform a visual inspection of the engine. Inspect the following items:
Wiring
Connectors
Fuel level
Fuel supply
Engine oil level
Engine oil supply
Coolant level
Intake air system
Air exhaust system
Check the wiring and the connectors for the following problems:
Damage
Abrasion
Corrosion
Incorrect attachment
Check for any logged diagnostic codes.
Determine if the logged diagnostic codes correlate to probable causes.
Determine if the logged diagnostic codes occur at the same time as the symptoms.
Determine if the logged diagnostic codes are logged repeatedly.If these inspections do not reveal any problems, use the procedure that best describes the symptoms.