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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Heater & Air Conditioning Control System (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC B2636, B2637, B2638, B2639, B2654: Mode Door Motor (Front) >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC Items
(CONSULT screen terms)		 DTC detection condition Possible cause
B2636 DR VENT DOOR FAIL When the malfunctioning door position is detected at VENT position
  • Mode door motor (front)

    (PBR internal circuit is open or shorted)

  • Mode door motor (front) control linkage installation condition
  • A/C auto amp.
  • Harness and connector

    (LIN communication line is open or shorted)
B2637 DR B/L DOOR FAIL When the malfunctioning door position is detected at B/L position
B2638 DR D/F1 DOOR FAIL When the malfunctioning door position is detected at FOOT position
B2639 DR DEF DOOR FAIL When the malfunctioning door position is detected at DEF position
B2654 D/F2 VENT DOOR FAIL When the malfunctioning door position is detected at D/F position
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