2007 INFINITI QX56 Factory Service Manual

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Page 489 of 3061

INFINITI QX56 2007 Factory Service Manual
TROUBLE DIAGNOSISATC-119
< SERVICE INFORMATION >
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COMPONENT INSPECTION
In-vehicle Sensor
After disconnecting in-vehicle sensor connector M32, measure resis-
tance bet

Page 490 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-120
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SYMPTOM: Optical sensor circuit is open or shorted. Using the
CONSULT-II, DTC B257F or B2580 is displayed. Without a CON-
SULT-II, code 50 or 52 is i

Page 491 of 3061

INFINITI QX56 2007 Factory Service Manual
TROUBLE DIAGNOSISATC-121
< SERVICE INFORMATION >
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The intake sensor is located on the heater & cooling unit. It converts
temperature of air after it passes through th

Page 492 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-122
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
4.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Che

Page 493 of 3061

INFINITI QX56 2007 Factory Service Manual
CONTROL UNITATC-123
< SERVICE INFORMATION >
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CONTROL UNIT
Removal and InstallationINFOID:0000000003533270
FRONT AIR CONTROL
Removal
1. Remove the five control knobs f

Page 494 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-124
< SERVICE INFORMATION >
AMBIENT SENSOR
AMBIENT SENSOR
Removal and InstallationINFOID:0000000003533271
REMOVAL
1. Disconnect the ambient sensor electrical connector.NOTE:
The ambient sensor is

Page 495 of 3061

INFINITI QX56 2007 Factory Service Manual
IN-VEHICLE SENSORATC-125
< SERVICE INFORMATION >
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IN-VEHICLE SENSOR
Removal and InstallationINFOID:0000000003533272
REMOVAL
1. Remove the cluster lid D. Refer to IP-

Page 496 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-126
< SERVICE INFORMATION >
OPTICAL SENSOR
OPTICAL SENSOR
Removal and InstallationINFOID:0000000003533273
The optical sensor is located in the top center of the instrument
panel. Refer to LT-44,

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