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Diagnostic System Check
Diagnostic System Check - Automatic Transmission Shift Lock ControlSteps 1 - 6:
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
3. Checks for Diagnostic Trouble Codes (DTCs) in the Body Control Module (BCM) and the Powertrain Control Module (PCM).
4. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.