TCM Circuit Check

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check the terminals and connector of TCM for damage, bent or loose connection (control module-side and harness-side).
OK or NG
1. OK: GO TO 2.
2. NG: Repair terminal or connector.
CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect TCM connector.
2. Check resistance between TCM harness connector F56 terminals 5 (L) and 6 (Y).
  5 (L) - 6 (Y) : Approx. 54 - 66Ω
OK or NG
1. DK : Replace TCM.
2. NG: Repair harness between harness connector F59 and TCM.
Fig 1: Checking TCM Harness Connector F56 Terminals 5 (L) And 6 (Y)
Courtesy of NISSAN MOTOR CO., U.S.A.