ECM/TCM Internal Circuit Inspection

WARNING: This page is about a different car, the 2004 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

Remove ECM and TCM from vehicle.
Check resistance between ECM terminals 109 and 113.
Check resistance between TCM terminals 5 and 6.

Fig 1: TCM Terminals Resistance Chart

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

Fig 2: Inspecting ECM/TCM Internal Circuit

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