Infiniti M35/M45 Y50. Manual - part 687

 

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Infiniti M35/M45 Y50. Manual - part 687

 

 

DTC P1217 ENGINE OVER TEMPERATURE

EC-1221

[VK45DE]

C

D

E

F

G

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A

EC

8. 

CHECK IPDM E/R GROUND CIRCUIT

1.

Disconnect IPDM E/R harness connector E8, E9.

2.

Check harness continuity between IPDM E/R terminal 38, 51 and ground.
Refer to wiring diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 9.

NG

>> Repair open circuit or short to power in harness or connectors.

9. 

CHECK COOLING FAN CONTROL SIGNAL CIRCUIT

1.

Check harness continuity between IPDM E/R terminal 59 and cooling fan control module terminal 2.
Refer to wiring diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK >> GO 

TO 

10.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

10. 

CHECK COOLING FAN CONTROL MODULE OUTPUT SIGNAL CIRCUIT

1.

Reconnect all harness connectors disconnected.

2.

Disconnect cooling fan control module harness connectors E301, E303.

3.

Turn ignition switch ON.

4.

Check voltage between cooling fan control module terminals 4,
6 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 11.

NG

>> Replace cooling fan control module.

11. 

CHECK COOLING FAN MOTORS -1 AND -2

Refer to 

EC-1224, "Component Inspection"

 .

OK or NG

OK

>> GO TO 16.

NG

>> Replace cooling fan motor.

Continuity should exist.

Continuity should exist.

Voltage: Battery voltage

PBID0261J

EC-1222

[VK45DE]

DTC P1217 ENGINE OVER TEMPERATURE

12. 

CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect cooling fan relay.

3.

Turn ignition switch ON.

4.

Check voltage between cooling fan relay terminals 1, 3 and
ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 14.

NG

>> GO TO 13.

13. 

DETECT MALFUNCTIONING PART

Check the following.

●

10A fuse

●

Fuse block (J/B) connector E102

●

50A fusible link

●

Harness for open or short between cooling fan relay and fuse

●

Harness for open or short between cooling fan relay and battery

>> Repair open circuit or short to ground or short to power in harness or connectors.

14. 

CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-III

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector E9.

3.

Check harness continuity between the following;
Cooling fan relay terminal 2 and IPDM E/R terminal 56,
Cooling fan relay terminal 5 and cooling fan control module terminal 3.
Refer to wiring diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 15.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

15. 

CHECK COOLING FAN RELAY

Refer to 

EC-1224, "Component Inspection"

 .

OK or NG

OK

>> GO TO 16.

NG

>> Replace cooling fan relay.

Voltage: Battery voltage

PBIA9511J

Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE

EC-1223

[VK45DE]

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EC

16. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-857, "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 Overheating

NBS005KW

*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-36, "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 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-40

4

●

Radiator cap

●

Pressure tester

59 - 98 kPa

(0.6 - 1.0 kg/cm

2

 , 9 - 14 

psi) (Limit)

CO-45

ON*

2

5

●

Coolant leaks

●

Visual

No leaks

CO-40

ON*

2

6

●

Thermostat

●

Touch the upper and 
lower radiator hoses

Both hoses should be hot

CO-55

ON*

1

7

●

Cooling fan

●

CONSULT-II

Operating

See trouble diagnosis for 
DTC P1217 (

EC-1214

 ).

OFF

8

●

Combustion gas leak

●

Color checker chemical 
tester 4 Gas analyzer

Negative

—

ON*

3

9

●

Coolant temperature 
gauge

●

Visual

Gauge less than 3/4 
when driving

—

●

Coolant overflow to 
reservoir tank

●

Visual

No overflow during driving 
and idling

CO-40

OFF*

4

10

●

Coolant return from 
reservoir tank to radia-
tor

●

Visual

Should be initial level in 
reservoir tank

CO-40

OFF

11

●

Water control valve

●

Remove and inspect 
the valve

Within the specified value

CO-55

OFF

12

●

Cylinder head

●

Straight gauge feeler 
gauge

0.1 mm (0.004 in) Maxi-
mum distortion (warping)

EM-235

13

●

Cylinder block and pis-
tons

●

Visual

No scuffing on cylinder 
walls or piston

EM-252

EC-1224

[VK45DE]

DTC P1217 ENGINE OVER TEMPERATURE

Component Inspection

NBS005KX

COOLING FAN MOTORS -1 AND -2

1.

Disconnect cooling fan control module harness connectors.

2.

Supply cooling fan control module terminals with battery voltage
and check operation.

Make sure that cooling fan operates.
If NG, replace cooling fan motor.

COOLING FAN RELAY

1.

Disconnect cooling fan relay harness connector.

2.

Check continuity between terminals 3 and 5 under the following
conditions.

If NG, replace cooling fan relay.

Cooling fan motor

Terminals

(+)

(

−

)

1

4

5

2

6

7

PBID0262J

Conditions

Continuity

12V direct current supply 
between terminals 1 and 2

Yes

No current supply

No

SEF090M

 

 

 

 

 

 

 

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