Check Input Signal Circuit

Turn ignition off. Disconnect ECM and combination meter wiring harness connector. Check harness continuity between ECM terminal No. 32 and combination meter terminals "f" (Yellow/Green wire). See Fig 1 . If continuity is present, check ECM pin terminals and connector and repair as necessary. If continuity is not present, repair wiring harness or connectors as necessary and perform FINAL CHECK  .

Fig 1: DTC 14, Checking Input Signal Circuit (Sentra)

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