Transmission General Description

Transmission General Information

How to Use This
This provides this information:
^ General diagnosis information on transmissions
^ Procedures for diagnosing the Hydra-matic transmission
When you diagnose any condition of the Hydra-matic transmission, begin with A Diagnostic Starting Point. This procedure indicates the proper path of diagnosing the transmission by describing the basic checks. This procedure will then refer you to the locations of specific checks. After you have determined the cause of a condition, refer to repair procedures. If the faulty component is not serviceable without removing the transmission from the vehicle, refer to repair information.


Basic Knowledge

Notice: Do not, under any circumstances, attempt to diagnose a powertrain condition without basic knowledge of this powertrain. If you perform diagnostic procedures without this basic knowledge, you may incorrectly diagnose the condition or damage the powertrain components.

You must be familiar with some basic electronics. You should also be able to use these special tools:
^ A digital multimeter (DMM)
^ A circuit tester
^ Jumper wires or leads
^ A line pressure gage set


Diagnosis

Notice: If you probe a wire with a sharp instrument and do not properly seal the wire afterward, the wire corrodes and an open circuit results.

Diagnostic test probes are now available that allow you to probe individual wires without leaving the wire open to the environment. These probe devices are inexpensive and easy to install, and they permanently seal the wire from corrosion.