2005 INFINITI FX35 cooling

DTC P1217 ENGINE OVER TEMPERATURE EC-1215
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Revision: 2005 July 2005 FX
Overall Function CheckABS007ST
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 when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
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-1219,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to EC-1219,
"Diagnostic Procedure" .
3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON- SULT-II.
5. If the results are NG, go to EC-1219, "
Diagnostic Procedure" .
WITH GST
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-1219,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to EC-1219,
"Diagnostic Procedure" .
3. Disconnect engine coolant temperature sensor harness connec- tor.
4. Connect 200 Ω resister to the engine coolant temperature sensor
harness connector.
5. Start engine and make sure that cooling fan operates at middle speed.
Be careful not to overheat engine.
If NG, go to EC-1219, "
Diagnostic Procedure" .
If OK, go to the following step.
6. Turn ignition switch OFF.
7. Disconnect 200 Ω resister from engine coolant temperature sen-
sor harness connector.
SEF621W
SEF646X
SEF621W
PBIB0965E

EC-1216
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DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2005 July 2005 FX
8. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
9. Start engine and make sure that cooling fan operates at higher speed than low speed.
Be careful not to overheat engine.
10. If NG, go to EC-1219, "
Diagnostic Procedure" .
SEF882V

DTC P1217 ENGINE OVER TEMPERATURE EC-1219
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Revision: 2005 July 2005 FX
Diagnostic ProcedureABS007SV
1. CHECK COOLING FAN (CRANKSHAFT DRIVEN)
1. Start engine and let id idle.
2. Make sure that cooling fan (crankshaft driven) operates normally.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 4.
NG >> Check cooling fan (crankshaft driven). Refer to CO-49, "
COOLING FAN" .
2. CHECK COOLING FAN MIDDLE SPEED OPERATION
With CONSULT-II
1. Start engine and let it idle.
2. Select “COOLING FAN” in “ACTIVE TEST” mode with CON- SULT-II, and touch “MID” on the CONSULT-II screen.
3. Make sure that cooling fan operates.
OK or NG
OK >> GO TO 3.
NG >> Check cooling fan middle speed control circuit. (Go to EC-1221, "
PROCEDURE A" .)
3. CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-II
1. Select “COOLING FAN” in “ACTIVE TEST” mode with CON- SULT-II and touch “HI” on the CONSULT-II screen.
2. Make sure that cooling fan operates at higher speed than middle speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
1223, "PROCEDURE B" .)
PBIB1668E
SEF785Z

EC-1220
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DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2005 July 2005 FX
4. CHECK COOLING FAN MIDDLE SPEED OPERATION
Without CONSULT-II
1. Disconnect engine coolant temperature sensor harness connector.
2. Connect 200 Ω resistor to engine coolant temperature sensor harness connector.
3. Start engine and let it idle.
4. Make sure that cooling fan operates.
OK or NG
OK >> GO TO 5.
NG >> Check cooling fan middle speed control circuit. (Go to
EC-1221, "
PROCEDURE A" .)
5. CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Disconnect 200 Ω resister to the engine coolant temperature sensor harness connector.
2. Connect 150 Ω resistor to engine coolant temperature sensor harness connector.
3. Start engine and let it idle.
4. Make sure that cooling fan operates at higher speed than middle speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan control circuit. (Go to EC-1223,
"PROCEDURE B" .)
6. CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the
pressure drops.
CAUTION:
Higher than the specified pressure may cause radiator damage.
Pressure should not drop.
OK or NG
OK >> GO TO 7.
NG >> Check the following for leak. Refer to CO-37, "
LEAK
CHECK" .

Hose

Radiator

Water pump
PBIB0965E
SEF882V
Testing pressure: 157 kPa (1.6 kg/cm2 , 23 psi)
PBIC1528E

EC-1222
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DTC P1217 ENGINE OVER TEMPERATURE
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3. CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN OR SHORT
1. Disconnect IPDM E/R harness connector E5.
2. Disconnect cooling fan motor harness connector.
3. Check harness continuity between cooling fan motor terminal 2 and IPDM E/R terminal 8.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK COOLING FAN MOTOR GROUND CIRCUIT FOR OPEN OR SHORT
1. Check harness continuity between the following; cooling fan motor terminal 3 and ground,
cooling fan motor terminal 4 and ground.
Refer to wiring diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to power in harness or connectors.
5. CHECK COOLING FAN MOTOR
Refer to EC-1224, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace cooling fan motor.
6. CHECK INTERMITTENT INCIDENT
Perform EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness connectors. Continuity should exist.
PBIB1493E
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE EC-1223
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PROCEDURE B
1. CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN OR SHORT
1. Disconnect IPDM E/R harness connector E6.
2. Disconnect cooling fan motor harness connector.
3. Check harness continuity between cooling fan motor terminal 1 and IPDM E/R terminal 11.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2. CHECK COOLING FAN MOTOR
Refer to EC-1224, "
Component Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Replace cooling fan motor.
3. CHECK INTERMITTENT INCIDENT
Perform EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness connectors.
Main 13 Causes of OverheatingABS007SW
Continuity should exist.
PBIB1493E
Engine Step Inspection item Equipment Standard Reference page
OFF 1

Blocked radiator

Blocked condenser

Blocked radiator grille

Blocked bumper

Visual No blocking —
2

Coolant mixture
Coolant tester 50 - 50% coolant mixture MA-13
3
Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neck CO-37
4
Radiator cap
Pressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2 , 9 - 14
psi) (Limit) CO-43
ON*25
Coolant leaks
Visual No leaks
CO-37
ON*26
Thermostat
Touch the upper and
lower radiator hoses Both hoses should be hot
CO-53
ON*17
Cooling fan
CONSULT-II Operating See trouble diagnosis for
DTC P1217 ( EC-1213
).
OFF 8

Combustion gas leak
Color checker chemical
tester 4 Gas analyzer Negative —

EC-1224
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DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2005 July 2005 FX
*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-33, "
OVERHEATING CAUSE ANALYSIS" .
Component InspectionABS007SX
COOLING FAN MOTOR
1. Disconnect cooling fan motor harness connector.
2. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
ON*39
Coolant temperature
gauge
Visual Gauge less than 3/4 when driving —

Coolant overflow to
reservoir tank
Visual No overflow during driving and idling CO-37
OFF*410
Coolant return from
reservoir tank to radia-
tor
Visual Should be initial level in reservoir tank CO-37
OFF 11
Water control valve
Remove and inspect
the valve Within the specified value
CO-53
OFF 12
Cylinder head
Straight gauge feeler
gauge 0.1 mm (0.004 in) Maxi-
mum distortion (warping) EM-229
13
Cylinder block and pis-
tons
Visual No scuffing on cylinder walls or piston EM-245
Engine Step Inspection item Equipment Standard Reference page
Speed
Terminals
(+) ( −)
Cooling fan motor Middle
1 3 and 4
2 3 and 4
High 1, 2 3, 4
SEF321T

EC-1364
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REFRIGERANT PRESSURE SENSOR
Revision: 2005 July 2005 FX
REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionABS007X7
The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
PBIB1492E
PBIB2657E