Intake Door Motor Circuit

SYMPTOM:

• Intake door does not change. 

1. CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR 

   Disconnect intake door motor harness connector.

   Do approx. 12 volts exist between intake door motor harness terminal Nos. 1, 2 and body ground?

   Fig 1: Checking Power Supply For Intake Door Motor

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

   Yes or No 

   1. Yes: GO TO  3.
   2. No: GO TO 2.
2. CHECK CIRCUIT CONTINUITY BETWEEN INTAKE DOOR MOTOR AND AIR CONTROL UNIT 

   Check circuit continuity between A/C control unit harness terminal Nos. 10 (11) and intake door motor harness terminal Nos. 2 (1).

   Fig 2: Checking Circuit Continuity Between Intake Door Motor And Air Control Unit

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

   If OK, check harness for short. 

   Yes or No 

   1. Yes: Replace A/C control unit.
   2. No: Repair harness or connector.
3. CHECK CIRCUIT CONTINUITY OF INTAKE DOOR MOTOR 

   Check circuit continuity between intake door motor harness terminal No. 1 and No. 2.

   Fig 3: Checking Circuit Continuity Of Intake Door Motor

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

   OK or NG 

   1. OK: GO TO 4.
   2. NG: Replace intake door motor.
4. CHECK INTAKE DOOR LINKAGE 

   Refer to "CONTROL LINKAGE ADJUSTMENT ".

   OK or NG 

   1. OK: INSPECTION END. 
   2. NG: Repair or adjust.