Without Scan Tool

Self-diagnosis





The control unit has a function of self-diagnosis. If a trouble occurs in the course of system startup, the control unit blinks the CHECK lamp and saves the trouble code.

Note: If an intermittent fault occurs, the control unit stops blinking upon removal of the fault. The trouble code is saved to the control unit.

Indication Method of Trouble Code





^ Short-circuit terminal 8 of the self-diagnostic connector to GND to display the trouble code on the CHECK lamp.
^ If no trouble codes exist, code "12" is displayed continuously.





^ If trouble codes exist, code "12" is displayed three times, and the trouble codes, starting from the smaller code number, are displayed three times respectively.