Diagnosis Procedure

DIAGNOSTIC TEST MODE 5 (Real-time diagnostic system)
In real-time diagnosis, if the following items are judged to be working incorrectly, a malfunction will be indicated immediately.
^ Camshaft position sensor (120° signal & 1° signal) output signal
^ Ignition signal
^ Mass air flow sensor output signal
Consequently, this diagnosis very effectively determines whether the above systems cause the malfunction, during driving test. Compared with on-board diagnostic system, real-time diagnosis is very sensitive and can detect malfunctions instantly. However, items regarded as malfunctions in this diagnosis are not stored in ECM memory.




PROCEDURE
CAUTION: In real-time diagnosis, pay attention to inspection lamp flashing. ECM displays the diagnostic trouble code only once and does not memorize the inspection.










DECODING CHARTS

DECODING CHART SEQUENCE
Display presentation Malfunction circuit or parts ECM shows a malfunction signal when
the following conditions are detected.
(Compare with On-board diagnostic system
- Diagnostic Test Mode III.)