2006 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2006  Factory Service Manual ATC-112
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Rear Air Control CircuitEJS003XU
SYMPTOM:
Temperature cannot be adjusted from the rear air control.
INSPECTION FLOW
*1AT C - 6 0 ,  "Operati

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INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-113
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Revision: November 2009 2006 QX56
SYSTEM DESCRIPTION
Component Parts
Rear air control system components are:
Front air control
Rear air control


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INFINITI QX56 2006  Factory Service Manual ATC-114
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
2. CHECK CIRCUIT BETWEEN REAR AIR CONTROL AND FRONT AIR CONTROL FOR OPEN AND 
SHORT
1. Turn ignition switch OFF.
2. Disconnect front air cont

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INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-115
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Revision: November 2009 2006 QX56
Magnet Clutch CircuitEJS003XV
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
*1 .ATC-58, "Operational Ch

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INFINITI QX56 2006  Factory Service Manual ATC-116
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
SYSTEM DESCRIPTION
The front air control controls compressor operation based on ambient and intake temperature and a signal
from ECM.
Low Tem

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INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-117
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Revision: November 2009 2006 QX56
2. PERFORM AUTO ACTIVE TEST
Refer to  PG-24, "
Auto Active Test" .
Does magnet clutch operate?
YES or NO
YES >>W

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INFINITI QX56 2006  Factory Service Manual ATC-118
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
6. CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front air control

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INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-119
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Revision: November 2009 2006 QX56
9. CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer to AT C - 3 4 ,  "
CONSULT-II Function
(HVAC)"