2005 INFINITI QX4 Factory Service Manual

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INFINITI QX4 2005  Factory Service Manual EC-154Revision: October 2005
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
2005 QX56
25. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
Cru

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INFINITI QX4 2005  Factory Service Manual TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-155
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Revision: October 20052005 QX56
30. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and t

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INFINITI QX4 2005  Factory Service Manual EC-156Revision: October 2005
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
2005 QX56
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTPFP:00006
DescriptionUBS00L0J
Intermittent incidents may occur. In many ca

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INFINITI QX4 2005  Factory Service Manual POWER SUPPLY AND GROUND CIRCUIT
EC-157
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Revision: October 20052005 QX56
POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramUBS00H0F
BBWA1670E

Page 1349 of 3419

INFINITI QX4 2005  Factory Service Manual EC-158Revision: October 2005
POWER SUPPLY AND GROUND CIRCUIT
2005 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground termina

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INFINITI QX4 2005  Factory Service Manual POWER SUPPLY AND GROUND CIRCUIT
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4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on

Page 1351 of 3419

INFINITI QX4 2005  Factory Service Manual EC-160Revision: October 2005
POWER SUPPLY AND GROUND CIRCUIT
2005 QX56
8. CHECK ECM POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON and th

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INFINITI QX4 2005  Factory Service Manual POWER SUPPLY AND GROUND CIRCUIT
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Revision: October 20052005 QX56
12. CHECK 20A FUSE
1. Disconnect 20A fuse from IPDM E/R.
2. Check 20A fuse.
OK or NG
OK >> GO TO 16.
NG