Trouble Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REAR AIR CONTROL (FRONT) POWER SUPPLY
1. Disconnect rear air control (front) harness connector.
2. Turn ignition switch ON.
3. Check voltage between rear air control (front) harness connector R2 terminal 10 and ground.
  Battery voltage should exist .
  
  Is the inspection result normal?
  
  YES: GO TO 2.
  
  NO: Repair harness or connector.
  
  Fig 1: Checking Voltage Between Rear Air Control (Front) Harness Connector R2 Terminal 10 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.

CHECK REAR AIR CONTROL (FRONT) FRONT AUX BLOWER POT REFERENCE VOLTAGE

Disconnect rear air control (front) harness connector.

Check voltage between rear air control (front) harness connector R2 terminal 6 and ground.

Connector	Terminals		Voltage (Approx.)
Connector	(+)	(-)	Voltage (Approx.)
Rear air control (front): R2	6	Ground	5V

Fig 2: Checking Voltage Between Rear Air Control (Front) Harness Connector R2 Terminal 6 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: GO TO 3.

NO: GO TO 4.

CHECK REAR AIR CONTROL (FRONT) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear air control (front) harness connector R2 terminal 1 and ground.
  Continuity should exist .
  
  Fig 3: Checking Continuity Between Rear Air Control (Front) Harness Connector R2 Terminal 1 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  Is the inspection result normal?
  
  YES: Replace rear air control (front). Refer to "REMOVAL AND INSTALLATION ".
  
  NO: Repair harness or connector.
CHECK REAR AIR CONTROL (FRONT) BLOWER POT CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between A/C auto amp. harness connector M50 (A) terminal 38 and rear air control (front) harness connector R2 (B) terminal 6.
  Continuity should exist .
  
  Fig 4: Checking Continuity Between A/C Auto Amp. Harness Connector M50 Terminal 38 And Rear Air Control (Front) Harness Connector R2 Terminal 6
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  Is the inspection result normal?
  
  YES: Replace A/C auto amp. Refer to "REMOVAL AND INSTALLATION ".
  
  NO: Repair harness or connector.