3. Check Harness Between TCM & PNP Switch

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 the TCM connector and PNP switch connector.
Check continuity between TCM connector terminals 24, 31, 32, 43 and ground.

Fig 1: PNP Switch Continuity Reference Table
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
If OK, check the following.
- Harness for short-circuit to ground or power source.
- Open or short-circuit in the harness between unified meter and A/C auto amp. and TCM.

OK or NG

OK : GO TO 5 .
NG : GO TO 4.