2008 INFINITI QX56 air condition

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INFINITI QX56 2008 Factory Service Manual BACK DOOR OPENER FUNCTIONDLK-25
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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• When the back door reaches the half-latch state, the half- latch switch detec

BACK DOOR OPENER FUNCTIONDLK-25
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)
• When the remote keyless entry switch is pressed for at least 0.5 seconds, the back door control unit terminal
21 receives the signal.
• The back door control units checks door position through the rotary encoder.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.
• The back door control unit supplies power to the m agnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it al so executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Back Door Close Switch Operation (Fully Open → Fully Closed Operation)
• When the back door close switch is pressed, the ba ck door control unit terminal 8 receives the signal.
• The back door control units checks back door close switch (terminal 13) status and door position (must be
fully opened), through rotary encoder and battery voltage.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.
• The back door control unit supplies power to the m agnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it al so executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Reversal
The door will reverse direction during power open or close operation if the automatic door main switch, keyfob
or back door close switch is operated. A chime will sound to announce the reversal.
Anti-Pinch Function
• During auto operation, if an object is detected in the door's path, a warning chime sounds and the back door
operates in the reverse direction to prevent pinching.
• During auto close operation, if an object is detected by the pinch strips in the door's path, a warning chime sounds and the back door operates in the open direction until it is fully open.
Gas Stay Check
• During each power open operation, the back door control unit monitors motor current draw to determine ifthe gas stays are functioning properly.
• If a malfunction of the gas stays is detected, the back door control unit will close the back door while sound-
ing the warning chime. The back door cannot be opened usi ng the switches until the gas stay malfunction is
repaired.
Warning Functions
• The hazard warning lamps flash and a warning chime is sounded according to the back door operating state,
operations, and conditions.
Revision: March 2010 2008 QX56