Power Transistor
WARNING: This page is about a different car, the 2001 Isuzu VehiCROSS. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect power transistor harness connector. Check for continuity and/or measure resistance between specified terminal of power transistor. See Fig 1 . If continuity and/or resistance values are not as specified, replace power transistor.