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

B2634, B2635 AIR MIX DOOR MOTOR PBR (PASSENGER SIDE)

AUTOMATIC AIR CONDITIONER

B2634 B2635

Description

 
 AIR MIX DOOR MOTOR (PASSENGER SIDE)

  • The air mix door motor (passenger side) (1) is installed to the heater & cooling unit assembly.
    JPIIA1174ZZ.JPG
  • The LCU (Local Control Unit) is installed to each door motor so as to perform the multiplex communication control (LAN) between each door motor of the mode door motor, air mix door motor and intake door motor in one communication line.
  • When each LCU receives the control signal (combination of the pulse wave with two types of amplitude) from the A/C auto amp., it moves each door to the appropriate position based on the door position detection signal of each PBR (Potentio Balance Resistor). When the movement was completed, each LCU transmits the signal that reports the movement completion to the A/C auto amp.

DTC Logic

 
 DTC DETECTION LOGIC

DTC
 		Items
(CONSULT-III screen terms)
 		Diagnostic item is detected when...
 		Possible causes
B2634
 		PASS AIR MIX ACTR (SHORT)
 		Air mix door PBR (passenger side) position 5% or less
  • Air mix door motor (passenger side)
  • A/C auto amp.
  • Harness and connector
    (Open circuit or short circuit in CAN communication line)
    (Short in the air mix door motor circuit)
B2635
 		PASS AIR MIX ACTR (OPEN)
 		Air mix door PBR (passenger side) position 95% or more
  • Air mix door motor (passenger side)
  • A/C auto amp.
  • Harness and connector
    (Open circuit or short circuit in CAN communication line)
    (Open in the air mix door motor circuit)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM SELF-DIAGNOSIS
 
 2.FUNCTION INSPECTION

Diagnosis Procedure


 
 1.CHECK BATTERY VOLTAGE OF AIR MIX DOOR MOTOR (PASSENGER SIDE)
 
 2.CHECK SIGNAL OF AIR MIX DOOR MOTOR (PASSENGER SIDE)
 
 3.CHECK GROUND CIRCUIT OF AIR MIX DOOR MOTOR (PASSENGER SIDE)