How to Clear The Trouble Code

The trouble codes saved to the control unit can be deleted by the following procedure if the starter switch is being in the OFF position.

1. Short-circuit terminal 8 of the self-diagnostic connector to GND (terminal 4 or 5).
2. Turn on the starter switch while maintaining the state of step 1, and stop short-circuiting terminal 8 to GND within five seconds.
   Fig 1: Identifying Diagnostic Trouble Code Connector & Terminals

   Courtesy of ISUZU MOTOR CO.
3. If the conditions shown in steps 1 and 2 are met, the trouble codes saved to the control unit are cleared. (After the codes are completely deleted, the code 12 that indicates the normal condition is continuously displayed.)