Preliminary Information

When diagnosing this powertrain, you will almost certainly need to use the diagnostic procedures in this or other powertrain systems. The diagnostic procedures are mostly in the form of tables. At the beginning (formerly known as the Facing Page) of each DTC is a circuit diagram, descriptions, and notes about the condition or the DTC diagnosed in the table. Reading the diagnostic support information helps you to understand the system being tested, the components involved in the testing, how the PCM tests the system, how the PCM determines that the diagnostic has failed, and what the table is trying to accomplish. Below are explanations of the diagnostic support information and the tables for DTCs.