Diagnostic Procedure

Fig 1: DTC P1640: Output Driver Module No. 1 Circuit Fault (Steps 1-7)

Courtesy of ISUZU MOTOR CO.

Fig 2: DTC P1640: Output Driver Module No. 1 Circuit Fault (Steps 8-12)

Courtesy of ISUZU MOTOR CO.

Fig 3: DTC P1640: Output Driver Module No. 1 Circuit Fault (Steps 13-15)

Courtesy of ISUZU MOTOR CO.