2009 INFINITI QX56 Factory Service Manual

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Page 1721 of 4171

INFINITI QX56 2009 Factory Service Manual EC-394 < COMPONENT DIAGNOSIS >[VK56DE] FUEL INJECTOR Component Inspection INFOID:0000000003771714 FUEL INJECTOR 1. Disconnect fuel injector harness connector. 2. Check resistance between terminals as

Page 1722 of 4171

INFINITI QX56 2009 Factory Service Manual FUEL PUMPEC-395 < COMPONENT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC NP O FUEL PUMP DescriptionINFOID:0000000003771715 SYSTEM DESCRIPTION *: ECM determines the start signal status by the signa

Page 1723 of 4171

INFINITI QX56 2009 Factory Service Manual EC-396 < COMPONENT DIAGNOSIS >[VK56DE] FUEL PUMP 4. Check voltage between ECM terminal 113 and ground with CONSULT-IIl or tester. OK or NG OK >> GO TO 5. NG >> GO TO 3. 3.CHECK FUEL PUMP POWER SUPPLY

Page 1724 of 4171

INFINITI QX56 2009 Factory Service Manual FUEL PUMPEC-397 < COMPONENT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC NP O 2. Disconnect 15A fuse. 3. Check 15A fuse. OK or NG OK >> GO TO 7. NG >> Replace fuse. 7.CHECK CONDENSER-2 POWER SUPPL

Page 1725 of 4171

INFINITI QX56 2009 Factory Service Manual EC-398 < COMPONENT DIAGNOSIS >[VK56DE] FUEL PUMP >> Repair open circuit or short to ground or short to power in harness or connectors. 12.CHECK FUEL PUMP Refer to EC-398, "Component Inspection" . OK

Page 1726 of 4171

INFINITI QX56 2009 Factory Service Manual ICC BRAKE SWITCHEC-399 < COMPONENT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC NP O ICC BRAKE SWITCH Component DescriptionINFOID:0000000003771718 When depress on the brake pedal, ICC brake switch

Page 1727 of 4171

INFINITI QX56 2009 Factory Service Manual EC-400 < COMPONENT DIAGNOSIS >[VK56DE] ICC BRAKE SWITCH Check voltage between ECM terminal 101 and ground under the fol- lowing conditions. OK or NG OK >> INSPECTION END NG >> GO TO 10. 3.CHECK DTC W

Page 1728 of 4171

INFINITI QX56 2009 Factory Service Manual ICC BRAKE SWITCHEC-401 < COMPONENT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC NP O 1. Turn ignition switch OFF. 2. Disconnect ICC brake switch harness connector. 3. Check harness continuity betw
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