Section 673 (Transfer Case): Precautions: Precautions

WARNING: This page is about a different car, the 2006 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

Before connecting or disconnecting the transfer control unit harness connector, turn ignition switch "OFF" and disconnect the battery cables. Battery voltage is applied to transfer control unit even if ignition switch is turned "OFF" .

Fig 1: Disconnecting Negative Battery Cable First
Courtesy of NISSAN MOTOR CO., U.S.A.
When connecting or disconnecting pin connectors into or from transfer control unit, take care not to damage pin terminals (bend or break) .
When connecting pin connectors make sure that there are not any bends or breaks on transfer control unit pin terminals .

Fig 2: Precaution For Inspecting Control Module Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.
Before replacing transfer control unit, perform transfer control unit input/output signal inspection and make sure transfer control unit functions properly. Refer to "TRANSFER CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

Fig 3: Replacement Precaution For Transfer Control Module

Courtesy of NISSAN MOTOR CO., U.S.A.