2008 INFINITI QX56 Factory Service Manual

Page 1425 of 4083

INFINITI QX56 2008  Factory Service Manual EC-126
< COMPONENT DIAGNOSIS >[VK56DE]
P0117, P0118 ECT SENSOR
3. Check voltage between ECT sensor (1) terminal 1 and ground
with CONSULT-III or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT

Page 1426 of 4083

INFINITI QX56 2008  Factory Service Manual P0117, P0118 ECT SENSOREC-127
< COMPONENT DIAGNOSIS > [VK56DE]
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1. Check resistance between engine coolant temperature sensor
terminals 1 and 2 as shown in the figure.
<

Page 1427 of 4083

INFINITI QX56 2008  Factory Service Manual EC-128
< COMPONENT DIAGNOSIS >[VK56DE]
P0122, P0123 TP SENSOR
P0122, P0123 TP SENSOR
Component DescriptionINFOID:0000000001351432
Electric throttle control actuator consists of throttle control motor,

Page 1428 of 4083

INFINITI QX56 2008  Factory Service Manual P0122, P0123 TP SENSOREC-129
< COMPONENT DIAGNOSIS > [VK56DE]
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Refer to 
EC-86, "Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.

Page 1429 of 4083

INFINITI QX56 2008  Factory Service Manual EC-130
< COMPONENT DIAGNOSIS >[VK56DE]
P0122, P0123 TP SENSOR
OK or NG
OK >> GO TO 5.
NG >> Repair short to ground or short to power in harness or connectors.
5.CHECK ACCELERATOR PEDAL POSITION SENSOR

Page 1430 of 4083

INFINITI QX56 2008  Factory Service Manual P0122, P0123 TP SENSOREC-131
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>>
INSPECTION END
Component InspectionINFOID:0000000001351438
THROTTLE POSITION SENSOR
1. Reconnect all ha

Page 1431 of 4083

INFINITI QX56 2008  Factory Service Manual EC-132
< COMPONENT DIAGNOSIS >[VK56DE]
P0125 ECT SENSOR
P0125 ECT SENSOR
Component DescriptionINFOID:0000000001351440
The engine coolant temperature sensor is used to detect the engine
coolant tempera

Page 1432 of 4083

INFINITI QX56 2008  Factory Service Manual P0125 ECT SENSOREC-133
< COMPONENT DIAGNOSIS > [VK56DE]
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4. Start engine and run it for 65 minutes at idle speed.
If “COOLAN TEMP/S” increases to more than 31° C (8