2004 INFINITI QX56 Electric

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INFINITI QX56 2004  Factory Service Manual EC-26Revision: August 2007
ENGINE CONTROL SYSTEM
2004 QX56
Multiport Fuel Injection (MFI) SystemUBS00GZE
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal

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INFINITI QX56 2004  Factory Service Manual ENGINE CONTROL SYSTEM
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At idle
At low battery voltage
During acceleration
The knock sensor retard system is designed only for emergenci

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INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
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INSPECTION PROCEDURE
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a rela

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INFINITI QX56 2004  Factory Service Manual EC-44Revision: August 2007
BASIC SERVICE PROCEDURE
2004 QX56
32. ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC might be displayed.
Erase the stored memory in ECM and TCM. Refer to EC-62

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INFINITI QX56 2004  Factory Service Manual BASIC SERVICE PROCEDURE
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2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engi

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INFINITI QX56 2004  Factory Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
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ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionUBS00GZQ
The ECM has an on board diagnostic system

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INFINITI QX56 2004  Factory Service Manual EC-64Revision: August 2007
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2004 QX56
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting MIL up when there is
malfunction on engin

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INFINITI QX56 2004  Factory Service Manual TROUBLE DIAGNOSIS
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TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionUBS00GZW
INTRODUCTION
The engine has an ECM to control major s