2006 INFINITI M35 check

EC-518
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
4. CHECK THERMOSTAT
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
3. Check if valve is closed at 5
C (9F) below valve opening tem-
perature.
For details, refer to CO-29, "
WATER INLET AND THERMO-
STAT ASSEMBLY" .
OK or NG
OK >> GO TO 5.
NG >> Replace thermostat
5. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-230, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace engine coolant temperature sensor.
6. CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to EC-522, "
Main 12 Causes of Overheating" .
>>INSPECTION END
7. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module (1) harness connector
E42.
–: Vehicle front
–Cooling fan motor-1 harness connector (2)
–Cooling fan motor-2 harness connector (3)
3. Turn ignition switch ON.
4. Check voltage between cooling fan control module terminal 3
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 16.Valve opening temperature: 76.5
C (170F) [standard]
Valve lift: More than 8.6 mm/90
C
(0.339 in/194
F)
SLC949A
PBIB2691E
Voltage: Battery voltage
PBIA9509J

DTC P1217 ENGINE OVER TEMPERATURE
EC-519
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 January2006 M35/M45
8. CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check harness continuity between cooling fan control module terminal 1 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 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 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. 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 (Models with sub harness)>>GO TO 11.
OK (Models without sub harness)>>GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist.
Continuity should exist.
Continuity should exist.

EC-520
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
11 . CHECK COOLING FAN CONTROL MODULE OUTPUT SIGNAL CIRCUIT
1. Reconnect all harness connectors disconnected.
2. Disconnect cooling fan motor-1 harness connector (2) and cool-
ing fan motor-2 harness connector (3).
–: Vehicle front
–Cooling fan control module (1)
3. Turn ignition switch ON.
4. Check voltage between cooling fan motor-1, -2 terminals 1, 2
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12. CHECK COOLING FAN MOTOR CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module harness connectors E301, E303.
3. Check harness continuity between the following;
Cooling fan motor-1 terminal 1, 2 and cooling fan control module terminal 4,
Cooling fan motor-1 terminal 3, 4 and cooling fan control module terminal 5,
Cooling fan motor-2 terminal 1, 2 and cooling fan control module terminal 6,
Cooling fan motor-2 terminal 3, 4 and cooling fan control module terminal 7.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> Replace cooling fan control module.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2691E
Voltage: Battery voltage
PBIB2908E
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-521
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 January2006 M35/M45
13. CHECK COOLING FAN MOTOR CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module harness connectors E301, E303.
3. Check harness continuity between the following;
Cooling fan motor-1 terminal 1, 2 and cooling fan control module terminal 4,
Cooling fan motor-1 terminal 3, 4 and cooling fan control module terminal 5,
Cooling fan motor-2 terminal 1, 2 and cooling fan control module terminal 6,
Cooling fan motor-2 terminal 3, 4 and cooling fan control module terminal 7.
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.
14. 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 15.
NG >> Replace cooling fan control module.
15. CHECK COOLING FAN MOTORS -1 AND -2
Refer to EC-524, "
Component Inspection" .
OK or NG
OK >> GO TO 20.
NG >> Replace cooling fan motor.
16. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect cooling fan relay harness connector.
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 18.
NG >> GO TO 17.Continuity should exist.
Voltage: Battery voltage
PBID0261J
Voltage: Battery voltage
PBIA9511J

EC-522
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
17. 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.
18. 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 19.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
19. CHECK COOLING FAN RELAY
Refer to EC-524, "
Component Inspection" .
OK or NG
OK >> GO TO 20.
NG >> Replace cooling fan relay.
20. CHECK INTERMITTENT INCIDENT
Perform EC-165, "
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 12 Causes of OverheatingNBS00538
Continuity should exist.
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-13, "Anti-Freeze
Coolant Mixture Ratio"
3Coolant levelVisual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckMA-15, "Changing
Engine Coolant"
4Radiator capPressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2 , 9 - 14
psi) (Limit)CO-16, "
Checking Radia-
tor Cap"

DTC P1217 ENGINE OVER TEMPERATURE
EC-523
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 January2006 M35/M45
*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-7, "
OVERHEATING CAUSE ANALYSIS" . ON*
25Coolant leaksVisual No leaksCO-11, "LEAK CHECK"
ON*26ThermostatTouch the upper and
lower radiator hosesBoth hoses should be hotCO-29, "WATER INLET
AND THERMOSTAT
ASSEMBLY"
ON*17Cooling fanCONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-512
).
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 idlingMA-15, "Changing
Engine Coolant"
OFF*410Coolant return from
reservoir tank to radia-
torVisual Should be initial level in
reservoir tankMA-15, "Changing
Engine Coolant"
OFF 11Cylinder headStraight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-101, "CYLINDER
HEAD"
12Cylinder block and pis-
tonsVisual No scuffing on cylinder
walls or pistonEM-123, "CYLINDER
BLOCK"
Engine Step Inspection item Equipment Standard Reference page

EC-524
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
Component InspectionNBS00539
COOLING FAN MOTORS -1 AND -2
Models With Sub Harneess
1. Disconnect cooling fan motor harness connector.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Make sure that cooling fan speed of condition B is higher than that of A.
If NG, replace cooling fan motor.
Models Without Sub Harneess
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.
ConditionTerminals
(+) ()
Cooling fan motorA1 3 and 4
2 3 and 4
1 and 2 3
1 and 2 4
B 1, 2 3, 4
PBIB2738E
Cooling fan motorTerminals
(+) ()
145
267
PBID0262J
Conditions Continuity
12V direct current supply
between terminals 1 and 2Ye s
No current supply No
SEF090M

EC-528
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS0053F
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-172, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
38 G/RFuel pump control module
(FPCM) check[When cranking engine]Approximately 0V
[Engine is running]
Warm-up condition
Idle speed4 - 6V
39 B/RFuel pump control module
(FPCM)[When cranking engine]0 - 0.5V
[Engine is running]
Warm-up condition
Idle speed8 - 12V
113 GR Fuel pump relay[Ignition switch: ON]
For 1 second after turning ignition switch ON
[Engine is running]0 - 1.5V
[Ignition switch: ON]
More than 1 second after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
1. Body ground M70 2. Body ground M16
PBIB2782E