Method of checking the position detection switch harness
WARNING: This page is about a different car, the 2003 Isuzu Rodeo Sport, 2003 Isuzu Rodeo, 2002 Isuzu Rodeo Sport, and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the vehicle harness connector on the transfer controller side and the vehicle harness connector on the transfer actuator side as shown in the wiring diagram, and check the continuity between the following connector pins and that there is no continuity between those pins and GND or power source.
Check that there is continuity between the GND pin and vehicle GND on the transfer actuator and there is no continuity between the GND pin and other power source.