A/C DISPLAY UNIT: Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK A/C DISPLAY UNIT POWER SUPPLY CIRCUIT
1. Disconnect the A/C display unit connector.
2. Turn ignition switch ON.
3. Check voltage between A/C display unit harness connector M101 terminal 6 and ground.
  6 - Ground: Battery voltage
Fig 1: Checking Voltage Between A/C Display Unit Harness Connector M101 Terminal 6 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: GO TO 2.

NO: Repair the harnesses or connectors.
CHECK GROUND CIRCUIT FOR A/C DISPLAY UNIT
1. Turn ignition switch OFF.
2. Check continuity between A/C display unit harness connector M101 terminal 1 and ground.
  1 - Ground: Continuity should exist
  
  Fig 2: Checking Continuity Between A/C Display Unit Harness Connector M101 Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
Is the inspection result normal?

YES: Replace the A/C display unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair the harnesses or connectors.