Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Diagnostics of malfunctions

In this Section the simplest scheme of clarification of the reasons of malfunctions and the refusals occurring in knots and systems of a vehicle is offered. Refusals and their possible reasons are broken into groups on the basis of the relation to certain components or car systems, such as the Engine, cooling System, etc., besides, in the text references to Chapters and Sections concerning these problems are given.

Remember that the successful conclusion of search of causes of defect at all does not grow out of the black magic available to only skilled professional mechanics, and is defined by a combination of a certain knowledge and a patient, systematic approach to problem research. To move always follows from simple to difficult, to lead up each check to the logic end and to try not to pass the obvious facts - any can forget to fill fuel in a fuel tank or to leave for the night included lighting devices.

And at last, always it is necessary to make an accurate picture of development of malfunction and to undertake the corresponding steps on recurrence prevention. If refusal of electric equipment was the result of violation of quality of contact, check at the same time a condition of all other contacts and electric sockets of system. If the same safety lock several times in a row continues to fuse, there is no sense to continue to replace simply it - it is necessary to try to find out a cause of failure. Remember that failure of an insignificant component can be a sign of violation of functioning of more important knot or the whole system.