On-Board Diagnostic System Description

1. To insure correct diagnosis, check to confirm that battery voltage is within standard value when engine is standstill.





2. Turn on ignition switch and make sure that malfunction indicator lamp ("CHECK ENGINE" light) lights.
3. If engine will not start but cranking is possible, crank it for more than 2 seconds.





4. While ignition switch is ON, ground diagnosis switch terminal (connect diagnosis switch terminal and ground terminal) in diagnosis connector 1 and then read diagnostic trouble code (observe malfunction indicator lamp ("CHECK ENGINE" light)).





Diagnostic Trouble Code NO.41
ECM indicates that no ignition signal is inputted while engine is running or being cranked. Diagnose trouble according to "Diagnostic Flow Chart for Code No.41".





Diagnostic Trouble Code NO.42
ECM memory indicates that no CMP sensor signal has been experienced for more that 2 seconds while engine is being cranked. Diagnose trouble according to "Diagnostic Flow Chart for Code No.42".