2004 INFINITI QX56 Factory Service Manual

Page 1793 of 3371

INFINITI QX56 2004  Factory Service Manual EC-602Revision: August 2007
FUEL PUMP CIRCUIT
2004 QX56
Wiring DiagramUBS00HDD
BBWA1714E

Page 1794 of 3371

INFINITI QX56 2004  Factory Service Manual FUEL PUMP CIRCUIT
EC-603
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM gro

Page 1795 of 3371

INFINITI QX56 2004  Factory Service Manual EC-604Revision: August 2007
FUEL PUMP CIRCUIT
2004 QX56
3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E122.
3. Turn ignition switch O

Page 1796 of 3371

INFINITI QX56 2004  Factory Service Manual FUEL PUMP CIRCUIT
EC-605
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >

Page 1797 of 3371

INFINITI QX56 2004  Factory Service Manual EC-606Revision: August 2007
FUEL PUMP CIRCUIT
2004 QX56
11 .  DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E41, C1
Harness for open or short between fuel pump and IPDM E/R
Har

Page 1798 of 3371

INFINITI QX56 2004  Factory Service Manual REFRIGERANT PRESSURE SENSOR
EC-607
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionUBS00HDH
The refrigerant pressure sensor is instal

Page 1799 of 3371

INFINITI QX56 2004  Factory Service Manual EC-608Revision: August 2007
REFRIGERANT PRESSURE SENSOR
2004 QX56
Wiring DiagramUBS00HDI
BBWA11 92 E

Page 1800 of 3371

INFINITI QX56 2004  Factory Service Manual REFRIGERANT PRESSURE SENSOR
EC-609
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: August 20072004 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not u