Except 2WD M/T Models For California

The on-board diagnostic system is useful to diagnose malfunctions in major sensors and actuators of the ECCS system. There are 5 modes in the on-board diagnostic system.
1. Diagnostic Test Mode I (Oxygen sensor monitor)
^ During closed loop operation:
The green inspection lamp turns ON when a lean condition is detected and goes OFF under rich condition.
^ During open loop operation condition:
The green inspection lamp remains OFF or ON.
2. Diagnostic Test Mode II (Mixture ratio feedback control monitor)
The green inspection lamp function is the same as Diagnostic Test Mode I.
^ During closed loop operation:
The red inspection lamp turns ON and OFF simultaneously with the green inspection lamp when the mixture ratio is controlled within the specified value.
^ During open loop operation:
The red inspection lamp remains ON or OFF.
3. Diagnostic Test Mode III (Self-diagnostic results)
In this mode the number of both green and red LED's flashing indicates the group to which the malfunctioning part belongs.
4. Diagnostic Test Mode IV (Switches ON/OFF diagnostic system)
During this mode, the inspection lamps monitor the switch ON-OFF condition.
^ Soft closed throttle position switch
^ Starter switch
^ Vehicle speed sensor
5. Diagnostic Test Mode V (Real-time diagnostic system) The moment the malfunction is detected, the display will be presented immediately. That is, the condition at which the malfunction occurs can be found by observing the inspection lamps during driving test.




DIAGNOSTIC TROUBLE CODES