WARNING: This page is about a different car, the 2003 Isuzu Axiom. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Electric Throttle Control System Check (Steps 1 & 2)
Courtesy of ISUZU MOTOR CO.
Fig 2: Identifying Electric Throttle Control System Check (Steps 3-5)
Courtesy of ISUZU MOTOR CO.
Fig 3: Identifying Electric Throttle Control System Check (Steps 6-8)
Courtesy of ISUZU MOTOR CO.
Fig 4: Identifying Electric Throttle Control System Check (Steps 9 & 10)