Check Door Switch Circuit

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

Turn ignition switch OFF.
Disconnect door switch and BCM.
Check continuity between door switch connector B8 (front LH) or B108 (front RH) terminal 2, B18 (rear LH) or B116 (rear RH) terminal 1 and BCM connector M18, M20 terminals 12, 13, 62 and 63
1. 2 (SB) - 62 (SB): Continuity should exist
2. 2 (BR/W) - 12 (BR/W): Continuity should exist
3. 1 (R/B) - 63 (R/B): Continuity should exist
4. 1 (L/R) - 13 (L/R): Continuity should exist
Check continuity between door switch connector B8 (front LH) or B108 (front RH) terminal 2, B18 (rear LH) or B116 (rear RH) terminal 1 and ground.
1. 2 (SB or BR/W) - Ground: Continuity should not exist
2. 1 (R/B or L/R) - Ground: Continuity should not exist

OK or NG

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

Fig 1: Checking Door Switch Circuit

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