2006 INFINITI QX56 Factory Service Manual

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Page 1681 of 3383

INFINITI QX56 2006 Factory Service Manual EC-470Revision: November 2009
DTC P1148, P1168 CLOSED LOOP CONTROL
2006 QX56
DTC P1148, P1168 CLOSED LOOP CONTROLPFP:22690
On Board Diagnosis LogicUBS00H8K
These self-diagnoses have the one trip detec

Page 1682 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P1211 TCS CONTROL UNITEC-471
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Revision: November 2009 2006 QX56
DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionUBS00H8L
The malfunction information related to TCS is trans

Page 1683 of 3383

INFINITI QX56 2006 Factory Service Manual EC-472Revision: November 2009
DTC P1212 TCS COMMUNICATION LINE
2006 QX56
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionUBS00H8P
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first p

Page 1684 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATUREEC-473
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Revision: November 2009 2006 QX56
DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
DescriptionUBS00H8T
SYSTEM DESCRIPTION
NOTE:
If DTC P121

Page 1685 of 3383

INFINITI QX56 2006 Factory Service Manual EC-474Revision: November 2009
DTC P1217 ENGINE OVER TEMPERATURE
2006 QX56
On Board Diagnosis LogicUBS00H8V
If the cooling fan or another component in the cooling system malfunctions, engine coolant te

EC-474Revision: November 2009
DTC P1217 ENGINE OVER TEMPERATURE
2006 QX56
On Board Diagnosis LogicUBS00H8V
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to MA-13, "
Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-8, "Changing Engine Oil" .
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to use coolant with the proper mixture ratio. Refer to MA-12, "
ANTI-FREEZE COOLANT MIXTURE
RATIO" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckUBS00H8W
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap and/or reservoir tank cap when the engine is hot. Serious burns could
be caused by high pressure fluid escaping from the radiator and/or reservoir tank.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-478,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to EC-478,
"Diagnostic Procedure" .
3. Turn ignition switch ON.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217 Engine over tempera-
ture (Overheat)
Cooling fan does not operate properly (Over-
heat).
Cooling fan system does not operate prop-
erly (Overheat).
Engine coolant was not added to the system
using the proper filling method.
Engine coolant is not within the specified
range.
Harness or connectors
(The cooling fan circuit is open or
shorted.)
Cooling fan
IPDM E/R (Cooling fan relay)
Radiator hose
Radiator
Radiator cap
Reservoir tank
Reservoir tank cap
Water pump
Thermostat
For more information, refer to EC-481,
"Main 12 Causes of Overheating" .
SEF621W

Page 1686 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATUREEC-475
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Revision: November 2009 2006 QX56
4. Perform “COOLING FAN ” in “ACTIVE TEST ” mode with CON-
SULT-II.
5. If the results are NG

Page 1687 of 3383

INFINITI QX56 2006 Factory Service Manual EC-476Revision: November 2009
DTC P1217 ENGINE OVER TEMPERATURE
2006 QX56
Wiring DiagramUBS00H8X
BBWA2102E

Page 1688 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATUREEC-477
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Revision: November 2009 2006 QX56
BBWA2103E

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