Nissan GT-R (R35) · Service Manual VENTILATION, HEATER & AIR CONDITIONER

B2581, B2582 INTAKE SENSOR

AUTOMATIC AIR CONDITIONER

B2581 B2582

Description

 
 INTAKE SENSOR

  • Intake sensor (1) is located on the evaporator (2).
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  • The intake sensor converts the evaporator passing air temperature detected with thermistor into the voltage, and the A/C auto amp. inputs this voltage.

 
 INTAKE TEMPERATURE CORRECTION

  • The A/C auto amp. inputs the temperature detected with the intake sensor as the evaporator passing air temperature.
  • Perform the correction of the temperature detected with the intake sensor for air conditioner control.
  • The A/C auto amp. performs the correction so that the recognition intake temperature changes according to the difference between the detected intake temperature and the recognition intake temperature. If the difference is large, the changing is early. The changing becomes slow as the difference becomes small.

DTC Logic

 
 DTC DETECTION LOGIC

DTC
 		Items
(CONSULT-III screen terms)
 		Diagnostic item is detected when...
 		Possible causes
B2581
 		EVAP TEMP SEN (SHORT)
 		The intake sensor recognition temperature is too high.
  • Intake sensor
  • A/C auto amp.
  • Harness and connector
    (Short in the intake sensor circuit)
B2582
 		EVAP TEMP SEN (OPEN)
 		The intake sensor recognition temperature is too low.
  • Intake sensor
  • A/C auto amp.
  • Harness and connector
    (Open in the intake sensor circuit)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM SELF-DIAGNOSIS

Diagnosis Procedure


 
 1.CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT
 
 2.CHECK INTAKE SENSOR CIRCUIT CONTINUITY
 
 3.CHECK INTAKE SENSOR
 
 4.CHECK INTAKE SENSOR CIRCUIT CONTINUITY

Component Inspection


 
 1.CHECK INTAKE SENSOR