2006 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2006  Factory Service Manual ATC-136
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
COMPONENT INSPECTION
Ambient Sensor
After disconnecting ambient sensor (1) connector E1, measure
resistance between terminals 1 and 2 at sens

Page 538 of 3383

INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-137
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Revision: November 2009 2006 QX56
In-vehicle Sensor CircuitEJS003Y3
COMPONENT DESCRIPTION
In-vehicle Sensor
The in-vehicle sensor is located on clu

Page 539 of 3383

INFINITI QX56 2006  Factory Service Manual ATC-138
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR
SYMPTOM: In-vehicle sensor circuit is open or shorted. Using the
CONSULT-II, DTC B2578 or B2579 is

Page 540 of 3383

INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-139
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Revision: November 2009 2006 QX56
5. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disco

Page 541 of 3383

INFINITI QX56 2006  Factory Service Manual ATC-140
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
COMPONENT INSPECTION
In-vehicle Sensor
After disconnecting in-vehicle sensor connector M32, measure resis-
tance between terminals 1 and 4 at

Page 542 of 3383

INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-141
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Revision: November 2009 2006 QX56
DIAGNOSTIC PROCEDURE FOR OPTICAL SENSOR
SYMPTOM: Optical sensor circuit is open or shorted. Using the
CONSULT-II,

Page 543 of 3383

INFINITI QX56 2006  Factory Service Manual ATC-142
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Intake Sensor CircuitEJS003Y5
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit. It converts
temp

Page 544 of 3383

INFINITI QX56 2006  Factory Service Manual TROUBLE DIAGNOSISATC-143
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Revision: November 2009 2006 QX56
3. CHECK INTAKE SENSOR
Refer to  ATC-143, "
Intake Sensor" .
OK or NG
OK >> 1. Replace front air control. Refer t