Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

The transfer case clockwise circuit shorting to the transfer case counter-clockwise circuit could cause this DTC to set.
It is possible to have windings inside the transfer case motor shorted to the case resulting in a short to ground causing this DTC to set.
The default actions for C0321 may set C0387.
EL-49741 harness is a good source for 9 V.
EL-49742 harness is a good source for B+ and ground.
The transfer case fill and drain plugs are a good source for ground.