2011 INFINITI QX56 Factory Service Manual

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Page 2521 of 5598

INFINITI QX56 2011 Factory Service Manual ELECTRICALLY-CONTROLLED COOLING FAN COUPLINGEC-497 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] C D E F G H I J K L M A EC NP O NO >> Repair or replace error-detected parts. 6.CHECK CAN COMMUNICATION Refer to

Page 2522 of 5598

INFINITI QX56 2011 Factory Service Manual EC-498 < DTC/CIRCUIT DIAGNOSIS >[VK56VD] FUEL INJECTOR FUEL INJECTOR Component Function CheckINFOID:0000000006218002 1.INSPECTION START Turn ignition switch to START. Are any cylinders ignited? YES >

Page 2523 of 5598

INFINITI QX56 2011 Factory Service Manual FUEL INJECTOREC-499 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] C D E F G H I J K L M A EC NP O 4. Also check harness for short to ground and to power. Is the inspection result normal? YES >> GO TO 3. NO >> R

Page 2524 of 5598

INFINITI QX56 2011 Factory Service Manual EC-500 < DTC/CIRCUIT DIAGNOSIS >[VK56VD] FUEL INJECTOR Is the inspection result normal? YES >> INSPECTION END NO >> Replace malfunctioning fuel injector. Refer to EM-49, " Removal and Installation".

Page 2525 of 5598

INFINITI QX56 2011 Factory Service Manual HIGH PRESSURE FUEL PUMPEC-501 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] C D E F G H I J K L M A EC NP O HIGH PRESSURE FUEL PUMP Component Function CheckINFOID:0000000006218005 1.CHECK HIGH PRESSURE FUEL PUM

Page 2526 of 5598

INFINITI QX56 2011 Factory Service Manual EC-502 < DTC/CIRCUIT DIAGNOSIS >[VK56VD] HIGH PRESSURE FUEL PUMP 4. Also check harness for short to ground and to power. Is inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-det

Page 2527 of 5598

INFINITI QX56 2011 Factory Service Manual ICC BRAKE SWITCHEC-503 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] C D E F G H I J K L M A EC NP O ICC BRAKE SWITCH Component Function CheckINFOID:0000000006218008 1.CHECK ICC BRAKE SWITCH FUNCTION WITH CONS

Page 2528 of 5598

INFINITI QX56 2011 Factory Service Manual EC-504 < DTC/CIRCUIT DIAGNOSIS >[VK56VD] ICC BRAKE SWITCH Is the inspection result normal? YES >> INSPECTION END NO >> GO TO 3. 3.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT-I 1. Turn ignition switch
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