2005 INFINITI QX4 Factory Service Manual

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INFINITI QX4 2005  Factory Service Manual EC-378Revision: October 2005
DTC P0550 PSP SENSOR
2005 QX56
DTC P0550 PSP SENSORPFP:49763
Component DescriptionUBS00H6P
Power steering pressure (PSP) sensor is installed to the power
steering high-pre

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INFINITI QX4 2005  Factory Service Manual DTC P0550 PSP SENSOR
EC-379
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Revision: October 20052005 QX56
Wiring DiagramUBS00H6T
BBWA1690E

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INFINITI QX4 2005  Factory Service Manual EC-380Revision: October 2005
DTC P0550 PSP SENSOR
2005 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when mea

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INFINITI QX4 2005  Factory Service Manual DTC P0550 PSP SENSOR
EC-381
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2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness con-
nector.
2

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INFINITI QX4 2005  Factory Service Manual EC-382Revision: October 2005
DTC P0550 PSP SENSOR
2005 QX56
6. CHECK INTERMITTENT INCIDENT
Refer to EC-156, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionUBS00H

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INFINITI QX4 2005  Factory Service Manual DTC P0605 ECM
EC-383
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Revision: October 20052005 QX56
DTC P0605 ECMPFP:23710
Component DescriptionUBS00H6X
The ECM consists of a microcomputer and connectors for signal
input

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INFINITI QX4 2005  Factory Service Manual EC-384Revision: October 2005
DTC P0605 ECM
2005 QX56
PROCEDURE FOR MALFUNCTION B
 With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-

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INFINITI QX4 2005  Factory Service Manual DTC P0605 ECM
EC-385
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2. REPLACE ECM
1. Replace ECM.
2. Perform initialization of IVIS(NATS) system and registration of all IVIS(NATS) ignition