Diagnostic System Check

A Diagnostic System Check - Theft Deterrent:

TEST DESCRIPTION
The numbers below refer to the step number(s) 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. The symptoms list in Symptoms will determine the correct diagnostic procedure to use.
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.
5. The presence of DTCs B2734, B2960, B3031, or B3055 indicate a vehicle theft deterrent system problem.
7. At this point you have determined all DTCs applicable to the Theft Deterrent system. Refer to Symptoms for further Theft Deterrent diagnosis. Symptom Related Diagnostic Procedures