2. Check Reclining Switch Circuit Harness Continuity

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

Disconnect driver seat control unit and power seat switch LH.
Check continuity between driver seat control unit connector P2 terminals 12, 27 and power seat switch LH connector P8 terminals 9, 10.
12 (O/B) - 9 (O/B) : Continuity should exist.

27 (G/B) - 10 (G/B) : Continuity should exist.
Check continuity between driver seat control unit connector P2 terminals 12, 27 and ground.
12 (O/B) - Ground : Continuity should not exist.

27 (G/B) - Ground : Continuity should not exist.

Fig 1: Checking Continuity

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

OK or NG

OK >> GO TO 3.
NG >> Repair or replace harness.