With Automatic Transaxle (ATX)
DESCRIPTIONThe Diagnosis system is divided into three specialized diagnosis: Key On Engine OFF-Diagnosis, Engine Running Diagnosis, and Continuous Diagnosis. The Diagnosis is not a conclusive diagnosis by itself, but is used as a part of the functional Quick-Test diagnostic procedure. The PCM stores the Diagnosis program in its permanent memory. When activated it checks the EEC system by testing its memory integrity and processing capability, and verifies that various sensors and actuators are connected and operating properly.
The Key On Engine Off and Engine Running Diagnosises are functional diagnosises which only detect faults present at the time of the Diagnosis. Continuous Diagnosis is performed during normal vehicle operation and stores any fault information in Keep Alive Memory (KAM) for retrieval at a later time.
CONTINUOUS SELF-DIAGNOSIS
The Continuous Memory DTC's are separated from the Key On Engine Off DTC's by a single separator pulse.
Note: During this mode of testing of testing the PCM continuously monitors inputs for opens and shorts. The Continuous Memory DTC's must be retrieved within 80 engine temperature warm up cycles. On the 81st Engine Temperature cycle, the DTC will be automatically erased. The Continuous Memory DTC's can also be erased by deactivating Self-Diagnosis while the DTC's are being outputted.