2005 INFINITI QX4 Factory Service Manual

Page 1833 of 3419

INFINITI QX4 2005  Factory Service Manual EC-642Revision: October 2005
FUEL PUMP CIRCUIT
2005 QX56
11 .  DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E41, C1
Harness for open or short between fuel pump and IPDM E/R
Ha

Page 1834 of 3419

INFINITI QX4 2005  Factory Service Manual REFRIGERANT PRESSURE SENSOR
EC-643
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Revision: October 20052005 QX56
REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionUBS00HDH
The refrigerant pressure sensor is insta

Page 1835 of 3419

INFINITI QX4 2005  Factory Service Manual EC-644Revision: October 2005
REFRIGERANT PRESSURE SENSOR
2005 QX56
Wiring DiagramUBS00HDI
BBWA1715E

Page 1836 of 3419

INFINITI QX4 2005  Factory Service Manual REFRIGERANT PRESSURE SENSOR
EC-645
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Revision: October 20052005 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not

Page 1837 of 3419

INFINITI QX4 2005  Factory Service Manual EC-646Revision: October 2005
REFRIGERANT PRESSURE SENSOR
2005 QX56
3. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn igniti

Page 1838 of 3419

INFINITI QX4 2005  Factory Service Manual REFRIGERANT PRESSURE SENSOR
EC-647
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Revision: October 20052005 QX56
7. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity be

Page 1839 of 3419

INFINITI QX4 2005  Factory Service Manual EC-648Revision: October 2005
ELECTRICAL LOAD SIGNAL
2005 QX56
ELECTRICAL LOAD SIGNALPFP:25350
DescriptionUBS00HDL
The electrical load signal (Headlamp switch signal, rear window defogger switch signal

Page 1840 of 3419

INFINITI QX4 2005  Factory Service Manual ICC BRAKE SWITCH
EC-649
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Revision: October 20052005 QX56
ICC BRAKE SWITCHPFP:25320
Component DescriptionUBS00L23
When depress on the brake pedal, ICC brake switch is turned OF