engine overheat NISSAN 350Z 2007 Z33 Engine Control User Guide

EC-546
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 November2007 350Z
6. Make sure that cooling fans operates at low speed.
If NG, go to EC-549, "
Diagnostic Procedure" .
If OK, go to the following steps.
7. Turn ignition switch OFF.
8. Turn air conditioner switch and blower fan switch OFF.
9. Disconnect engine coolant temperature sensor harness connec-
tor.
10. Connect 150Ω resistor to engine coolant temperature sensor
harness connector.
11. Restart engine and make sure that cooling fans operates at
higher speed than low speed.
CAUTION:
Be careful not to overheat engine.
12. If NG, go to EC-549, "
Diagnostic Procedure" .
SEC163BA
MEC475B

EC-550
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 November2007 350Z
5. CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-III
1. Turn ignition switch OFF.
2. Turn air conditioner switch and blower fan switch OFF.
3. Disconnect engine coolant temperature sensor harness connector.
4. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
5. Restart engine and make sure that cooling fans-1 and -2 oper-
ate at higher speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
554, "PROCEDURE B" .)
6. CHECK COOLING SYSTEM FOR LEAK
Refer to CO-10, "
LEAK CHECK" .
OK or NG
OK >> GO TO 7.
NG >> Check the following for leak.

Hose

Radiator

Water pump
7. CHECK RADIATOR CAP
Refer to CO-15, "
Checking Radiator Cap" .
OK or NG
OK >> GO TO 8.
NG >> Replace radiator cap.
8. CHECK THERMOSTAT
Refer to CO-26, "
WATER INLET AND THERMOSTAT ASSEMBLY" .
OK or NG
OK >> GO TO 9.
NG >> Replace thermostat
9. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-228, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace engine coolant temperature sensor.
10. CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to EC-555, "
Main 12 Causes of Overheating" .
>>INSPECTION END
MEC475B

DTC P1217 ENGINE OVER TEMPERATURE
EC-555
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
4. CHECK INTERMITTENT INCIDENT
Perform EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.
Main 12 Causes of OverheatingNBS000DK
*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 mixture
Coolant tester 50 - 50% coolant mixtureMA-12
3
Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckCO-10
4
Radiator cap
Pressure tester 88 - 127 kPa
(0.90 - 1.30 kg/cm2 , 12.8
- 18.4 psi) (Limit)CO-15
ON*25
Coolant leaks
Visual No leaksCO-10
ON*26
Thermostat
Touch the upper and
lower radiator hosesBoth hoses should be hotCO-26
ON*17
Cooling fan
CONSULT-III Operating See trouble diagnosis for
DTC P1217 (EC-543
).
OFF 8

Combustion gas leak
Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39
Coolant temperature
gauge
Visual Gauge less than 3/4
when driving—

Coolant overflow to
reservoir tank
Visual No overflow during driving
and idlingCO-10
OFF*410
Coolant return from
reservoir tank to radia-
tor
Visual Should be initial level in
reservoir tankCO-10
OFF 11
Cylinder head
Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-89
12
Cylinder block and pis-
tons
Visual No scuffing on cylinder
walls or pistonEM-107