2004 INFINITI QX56 Factory Service Manual

gas tank size wheel alignment trunk adding oil tire size low beam

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INFINITI QX56 2004 Factory Service Manual EC-122Revision: August 2007
TROUBLE DIAGNOSIS
2004 QX56
PBIB1594E

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INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-123
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Revision: August 20072004 QX56
TROUBLE DIAGNOSIS - SPECIFICATION VALUEPFP:00031
DescriptionUBS00H09
The specification (SP) valu

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-123
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TROUBLE DIAGNOSIS - SPECIFICATION VALUEPFP:00031
DescriptionUBS00H09
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor-
rection)
A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionUBS00H0A
Vehicle driven distance: More than 5,000 km (3,017 miles)
Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm2 , 14.25 - 15.12 psi)
Atmospheric temperature: 20 - 30°C (68 - 86°F)
Engine coolant temperature: 75 - 95°C (167 - 203°F)
Transmission: Warmed-up*1
Electrical load: Not applied*2
Engine speed: Idle
*1: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID TEMP SE” (A/T
fluid temperature sensor signal) indicates more than 60°C (140°F).
*2: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection ProcedureUBS00H0B
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-79, "
Basic Inspection" .
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2”
and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with
CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-124, "
Diagnostic Procedure" .
SEF 6 01 Z

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INFINITI QX56 2004 Factory Service Manual EC-124Revision: August 2007
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
2004 QX56
Diagnostic ProcedureUBS00H0C
SEF 6 13 ZD

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INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-125
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Revision: August 20072004 QX56
SEF 7 68 Z

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INFINITI QX56 2004 Factory Service Manual EC-126Revision: August 2007
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
2004 QX56
SEF 6 15 ZA

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INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
EC-127
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Revision: August 20072004 QX56
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTPFP:00006
DescriptionUBS00H0D
Intermittent incide

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INFINITI QX56 2004 Factory Service Manual EC-128Revision: August 2007
POWER SUPPLY AND GROUND CIRCUIT
2004 QX56
POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramUBS00H0F
BBWA11 55 E

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INFINITI QX56 2004 Factory Service Manual POWER SUPPLY AND GROUND CIRCUIT
EC-129
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Revision: August 20072004 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do n

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