Before using the OBDII scan tool or TOYOTA hand-held tester, the OBDII scan tool’s instruction book or TOYOTA hand-held tester’s operator manual should be read thoroughly.
Be sure to route all cables securely when driving with the OBDII scan tool or TOYOTA hand-held tester connected to the vehicle. (i.e. Keep cables away from feet, pedals, steering wheel and shift lever.)
Two persons are required when test driving with the OBDII scan tool or TOYOTA hand-held tester, one person to drive the vehicle and one person to operate the OBDII scan tool or TOYOTA hand-held tester.
This guide is based on the book edition Toyota (RM502U, 1997)