Infiniti I35 (A33). Manual — part 298
![](/vehicles/zatt/ltherawowha/yose/gheliepis.png)
5
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E8, E17
I
Joint connector-10
I
Harness for open or short between cooling fan relays-2 and -3 and ECM
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK COOLING FAN RELAYS-2 AND -3
Check continuity between cooling fan relay-2, -3 terminals 3 and 5, 6 and 7 under the following conditions.
SEF591X
OK or NG
OK
©
GO TO 7.
NG
©
Replace cooling fan relays.
7
CHECK COOLING FAN MOTORS
Supply battery voltage between the following terminals and check operation.
SEF592X
OK or NG
OK
©
GO TO 8.
NG
©
Replace cooling fan motors.
8
CHECK INTERMITTENT INCIDENT
1. Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-152.
©
INSPECTION END
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1217 ENGINE OVER TEMPERATURE
Diagnostic Procedure (Cont’d)
EC-533
![](/vehicles/zatt/ltherawowha/yose/deale.png)
Main 12 Causes of Overheating
NHEC1327
Engine
Step
Inspection item
Equipment
Standard
Reference page
OFF
1
I
Blocked radiator
I
Blocked condenser
I
Blocked radiator grille
I
Blocked bumper
I
Visual
No blocking
—
2
I
Coolant mixture
I
Coolant tester
50 - 50% coolant mixture See MA-11, “RECOM-
MENDED FLUIDS AND
LUBRICANTS”.
3
I
Coolant level
I
Visual
Coolant up to MAX level
in reservoir tank and
radiator filler neck
See MA-14, “Changing
Engine Coolant”.
4
I
Radiator cap
I
Pressure tester
59 - 98 kPa
(0.6 - 1.0 kg/cm
2
, 9 - 14
psi) (Limit)
See LC-12, “System
Check”.
ON*
2
5
I
Coolant leaks
I
Visual
No leaks
See LC-12, “System
Check”.
ON*
2
6
I
Thermostat
I
Touch the upper and
lower radiator hoses
Both hoses should be
hot
See LC-18, “Thermostat”
and LC-20, “Radiator”.
ON*
1
7
I
Cooling fan
I
CONSULT-II
Operating
See trouble diagnosis for
DTC P1217 (EC-517).
OFF
8
I
Combustion gas leak
I
Color checker chemi-
cal tester 4 Gas ana-
lyzer
Negative
—
ON*
3
9
I
Coolant temperature
gauge
I
Visual
Gauge less than 3/4
when driving
—
I
Coolant overflow to
reservoir tank
I
Visual
No overflow during driv-
ing and idling
See MA-14, “Changing
Engine Coolant”.
OFF*
4
10
I
Coolant return from
reservoir tank to radia-
tor
I
Visual
Should be initial level in
reservoir tank
See MA-13, “ENGINE
MAINTENANCE”.
OFF
11
I
Cylinder head
I
Straight gauge feeler
gauge
0.1 mm (0.004 in) Maxi-
mum distortion (warping)
See EM-50, “Inspection”.
12
I
Cylinder block and pis-
tons
I
Visual
No scuffing on cylinder
walls or piston
See EM-73, “Inspection”.
*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 LC-25, “OVERHEATING CAUSE ANALYSIS”.
DTC P1217 ENGINE OVER TEMPERATURE
Main 12 Causes of Overheating
EC-534
![](/vehicles/zatt/ltherawowha/yose/thenouserdy.png)
PBIB0145E
Component Description
NHEC1340
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds
to the throttle valve movement.
The throttle position sensor has the two sensors. These sensors
are a kind of potentiometers which transform the throttle valve
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the throttle valve and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the throttle valve from
these signals and the ECM controls the throttle control motor to
make the throttle valve opening angle properly in response to driv-
ing condition.
On Board Diagnosis Logic
NHEC1342
The MIL will not light up for this self-diagnosis.
DTC No.
Trouble diagnosis
name
DTC Detecting Condition
Possible Cause
P1225
1225
Closed throttle posi-
tion learning perfor-
mance problem
Closed throttle position learning value is exces-
sively low.
I
Electric throttle control actuator (TP
sensor 1 and 2)
DTC Confirmation Procedure
NHEC1343
NOTE:
If DTC Confirmation Procedure has been previously conducted,
always turn ignition switch OFF and wait at least 10 seconds before
conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10V at idle.
SEF058Y
With CONSULT-II
1)
Turn ignition switch ON.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Turn ignition switch OFF, wait at least 10 seconds.
4)
Turn ignition switch ON.
5)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-536.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1225 TP SENSOR
Component Description
EC-535
![](/vehicles/zatt/ltherawowha/yose/xceme.png)
With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure
NHEC1345
1
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is caught between the throttle valve and the housing.
SEC083D
OK or NG
OK
©
GO TO 2.
NG
©
Remove the foreign matter and clean the electric throttle control actuator inside.
2
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform “Throttle Valve Closed Position Learning”, EC-70.
3. Perform “Idle Air Volume Learning”, EC-70.
©
INSPECTION END
DTC P1225 TP SENSOR
DTC Confirmation Procedure (Cont’d)
EC-536
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст