2005 INFINITI QX4 Factory Service Manual

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Page 1633 of 3419

INFINITI QX4 2005 Factory Service Manual EC-442Revision: October 2005
DTC P1217 ENGINE OVER TEMPERATURE
2005 QX56
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go to EC-445, "
Diagnostic

Page 1634 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-443
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Revision: October 20052005 QX56
Wiring DiagramUBS00H8X
BBWA1697E

Page 1635 of 3419

INFINITI QX4 2005 Factory Service Manual EC-444Revision: October 2005
DTC P1217 ENGINE OVER TEMPERATURE
2005 QX56
BBWA1698E

Page 1636 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-445
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Revision: October 20052005 QX56
Diagnostic ProcedureUBS00H8Y
1. INSPECTION START
Do you have CONSULT-II?
Ye s o r N o
Yes >> GO TO

Page 1637 of 3419

INFINITI QX4 2005 Factory Service Manual EC-446Revision: October 2005
DTC P1217 ENGINE OVER TEMPERATURE
2005 QX56
4. CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the
pressure drops.
CAUTION:

Page 1638 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-447
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8. CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to EC-448, "
Main 12 Causes of Overheatin

Page 1639 of 3419

INFINITI QX4 2005 Factory Service Manual EC-448Revision: October 2005
DTC P1217 ENGINE OVER TEMPERATURE
2005 QX56
5. CHECK INTERMITTENT INCIDENT
Perform EC-156, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R

EC-448Revision: October 2005
DTC P1217 ENGINE OVER TEMPERATURE
2005 QX56
5. CHECK INTERMITTENT INCIDENT
Perform EC-156, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness connectors.
Main 12 Causes of OverheatingUBS00H8Z
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-6, "
OVERHEATING CAUSE ANALYSIS" . Engine Step Inspection item Equipment Standard Reference page
OFF 1
Blocked radiator
Blocked condenser
Blocked radiator grille
Blocked bumper
Visual No blocking —
2
Coolant mixtureCoolant tester 50 - 50% coolant mixtureMA-11, "RECOM-
MENDED FLUIDS AND
LUBRICANTS"
3Coolant levelVisual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckCO-10, "Changing
Engine Coolant"
4Radiator capPressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2 , 9 - 14
psi) (Limit)CO-10, "
CHECKING
RESERVOIR CAP"
ON*25Coolant leaksVisual No leaksCO-10, "CHECKING
COOLING SYSTEM FOR
LEAKS"
ON*26ThermostatTouch the upper and
lower radiator hosesBoth hoses should be hotCO-19, "THERMOSTAT
AND WATER PIPING"
ON*17Cooling fanCONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-440,
"DTC P1217 ENGINE
OVER TEMPERATURE"
).
OFF 8
Combustion gas leakColor checker chemical
tester 4 Gas analyzerNegative —
ON*
39Coolant temperature
gaugeVisual Gauge less than 3/4
when driving—
Coolant overflow to
reservoir tankVisual No overflow during driving
and idlingCO-10, "Changing
Engine Coolant"
OFF*410Coolant return from
reservoir tank to radia-
torVisual Should be initial level in
reservoir tankCO-10, "Changing
Engine Coolant"
OFF 11Cylinder headStraight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-63, "Inspection After
Disassembly"
12Cylinder block and pis-
tonsVisual No scuffing on cylinder
walls or pistonEM-89, "Inspection After
Disassembly"

Page 1640 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-449
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Revision: October 20052005 QX56
Component InspectionUBS00H90
COOLING FAN MOTOR
1. Disconnect cooling fan motor harness connector.
2.

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