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Symptom List: REAR DISPLAY COMMUNICATION FAULT Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be REAR DISPLAY COMMUNICA- When Monitored and Set Condition: REAR DISPLAY COMMUNICATION FAULT When Monitored: With the ignition on. Set Condition: A data line or communication fault is detected. REAR DISPLAY LED OR SPEAKER FAULT When Monitored: With the ignition on. Set Condition: Negative self-diagnostic for LED/speaker. POSSIBLE CAUSES INTERMITTENT CONDITION PARK ASSIST DISPLAY SIGNAL CIRCUIT SHORT TO GROUND PARK ASSIST DISPLAY CIRCUIT(S) OPEN PARK ASSIST DISPLAY CIRCUIT(S) SHORT TO VOLTAGE PARK ASSIST MODULE TEST ACTION APPLICABILITY 1 With the DRBIII t, Erase DTCs. Cycle the ignition off for at least 1 minute. t under System Tests, perform the Self Test. With the DRBIII t read DTCs. Does this DTC reset? All Yes → Go To 2 No → Go To 6 773 PARK ASSIST SYSTEM |