2007 INFINITI QX56 Factory Service Manual

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Page 1689 of 3061

INFINITI QX56 2007 Factory Service Manual EC-606 < SERVICE INFORMATION > ELECTRICAL LOAD SIGNAL ELECTRICAL LOAD SIGNAL DescriptionINFOID:0000000003532157 The electrical load signal (Headlamp switch signal, rear window defogger switch signal,

Page 1690 of 3061

INFINITI QX56 2007 Factory Service Manual ELECTRICAL LOAD SIGNAL EC-607 < SERVICE INFORMATION > C D E F G H I J K L MA EC N P O Select “HEATER FAN SW” and check indication under the following conditions. OK or NG OK >>INSPECTION END NG >>

Page 1691 of 3061

INFINITI QX56 2007 Factory Service Manual EC-608 < SERVICE INFORMATION > FUEL INJECTOR FUEL INJECTOR Component DescriptionINFOID:0000000003532160 The fuel injector is a small, precise solenoid valve. When the ECM supplies a ground to the fuel

Page 1692 of 3061

INFINITI QX56 2007 Factory Service Manual FUEL INJECTOR EC-609 < SERVICE INFORMATION > C D E F G H I J K L MA EC N P O Wiring DiagramINFOID:0000000003532162 Specification data are reference values and are measured between each terminal and gr

Page 1693 of 3061

INFINITI QX56 2007 Factory Service Manual EC-610 < SERVICE INFORMATION > FUEL INJECTOR Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- age to the ECMs transistor. Use a ground other than ECM t

Page 1694 of 3061

INFINITI QX56 2007 Factory Service Manual FUEL INJECTOR EC-611 < SERVICE INFORMATION > C D E F G H I J K L MA EC N P O 2. Listen to each fuel injector operating sound. Clicking noise should be heard. OK or NG OK >>INSPECTION END NG >> GO TO 3

Page 1695 of 3061

INFINITI QX56 2007 Factory Service Manual EC-612 < SERVICE INFORMATION > FUEL INJECTOR 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in har

Page 1696 of 3061

INFINITI QX56 2007 Factory Service Manual FUEL PUMP EC-613 < SERVICE INFORMATION > C D E F G H I J K L MA EC N P O FUEL PUMP DescriptionINFOID:0000000003532166 SYSTEM DESCRIPTION *: ECM determines the start signal status by the signals of eng
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