Nissan Frontier D22. Instruction — part 287
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
EC-251
[KA24DE]
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EC
*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"
Component Inspection
UBS00D5S
RADIATOR CAP
Apply pressure to cap with a tester.
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 (9°F) below valve opening tem-
perature.
Radiator cap relief
pressure
: 78 - 98 kPa (0.8 - 1.0 kg/
cm
2
, 11 - 14 psi)
SLC755A
Valve opening tempera-
ture
: 76.5
°C (170°F) [standard]
Valve lift
: More than 8 mm/90
°C
(0.31 in/194
°F)
SLC343
EC-252
[KA24DE]
DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-
FIRE
DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-
FIRE
PFP:00020
On Board Diagnosis Logic
UBS00D5T
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the CKP
sensor signal to vary, the ECM can determine that a misfire is occurring.
The misfire detection logic consists of the following two conditions.
1.
One Trip Detection Logic (Three Way Catalyst Damage)
On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to over-
heating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2.
Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
Sensor
Input Signal to ECM
ECM function
Crankshaft position sensor (OBD)
Engine speed
On board diagnosis of misfire
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0300
Multiple cylinder misfire
detected
Multiple cylinder misfire.
●
Improper spark plug
●
Insufficient compression
●
Incorrect fuel pressure
●
The injector circuit is open or shorted
●
Fuel injector
●
Intake air leak
●
The ignition secondary circuit is open or
shorted
●
Lack of fuel
●
Drive plate/Fly wheel
●
Heated oxygen sensor 1
●
Incorrect distributor rotor
●
EGR valve
●
Incorrect PCV hose connection
P0301
No.1 cylinder misfire
detected
No. 1 cylinder misfires.
P0302
No. 2 cylinder misfire
detected
No. 2 cylinder misfires.
P0303
No. 3 cylinder misfire
detected
No. 3 cylinder misfires.
P0304
No. 4 cylinder misfire
detected
No. 4 cylinder misfires.
DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-
FIRE
EC-253
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DTC Confirmation Procedure
UBS00ELV
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-
ing.
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.
WITH CONSULT-II
1.
Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2.
Start engine and warm it up to normal operating temperature.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Restart engine and let it idle for about 15 minutes.
5.
If 1st trip DTC is detected, go to
EC-253, "Diagnostic Procedure"
.
NOTE:
If 1st trip DTC is not detected during above procedure, performing
the following procedure is advised.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain
time. Refer to the table below.
Hold the accelerator pedal as steady as possible.
The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-
ditions should be satisfied at the same time.
The time to driving varies according to the engine speed in the freeze frame data.
WITH GST
Follow the procedure WITH CONSULT-II above.
Diagnostic Procedure
UBS00D5V
1.
CHECK FOR INTAKE AIR LEAK
1.
Start engine and run it at idle speed.
2.
Listen for the sound of the intake air leak.
OK or NG
OK
>> GO TO 2.
NG
>> Discover air leak location and repair.
PBIB0164E
Engine speed
Engine speed in the freeze frame data
± 400 rpm
Vehicle speed
Vehicle speed in the feaze frame data
± 10 km/h (6 MPH)
Engine coolant temperature
(T) condition
When the freeze frame data shows lower than 70
°C (158 °F),
T should be lower than 70
°C (158 °F).
When the freeze frame data shows higher than or equal to 70
°C (158 °F),
T should be higher than or equal to 70
°C (158 °F).
Engine speed
Time
Around 1,000 rpm
Approximately 10 minutes
Around 2,000 rpm
Approximately 5 minutes
More than 3,000 rpm
Approximately 3.5 minutes
EC-254
[KA24DE]
DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-
FIRE
2.
CHECK FOR EXHAUST SYSTEM CLOGGING
Stop engine and visually check exhaust tube, three way catalyst (manifold) and muffler for dents.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace it.
3.
CHECK EGR FUNCTION
Perform DTC Confirmation Procedure for DTC P1402 EGR FUNCTION (OPEN).
Refer to
OK or NG
OK
>> GO TO 4.
NG
>> Repair EGR system.
4.
PERFORM POWER BALANCE TEST
With CONSULT-II
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2.
Is there any cylinder which does not produce a momentary
engine speed drop?
Without CONSULT-II
When disconnecting each injector harness connector one at a time,
is there any cylinder which does not produce a momentary engine
speed drop?
Yes or No
Yes
>> GO TO 5.
No
>> GO TO 8.
5.
CHECK INJECTOR
Does each injector make an operating sound at idle?
Yes or No
Yes
>> GO TO 6.
No
>> Check injector(s) and circuit(s). Refer to
SEF981Z
SEF319V
MEC703B
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