Nissan Pathfinder (2012 year). Manual — part 316
HOW TO ERASE PERMANENT DTC
EC-609
< BASIC INSPECTION >
[VK56DE]
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Work Procedure (Group B)
INFOID:0000000007799385
NOTE:
Drive the vehicle according to only driving patterns indicating “INCMP” in driving patterns B and D on the
“PERMANENT DTC STATUS” screen.
1.
CHECK DTC
Check DTC.
Is any DTC detected?
YES
>> Repair malfunction(s) and erase DTC. Refer to
NO
>> GO TO 2.
2.
CHECK PERMANENT DTC
With CONSULT
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
*1: When the same malfunction is de-
tected in two consecutive trips, MIL
will illuminate.
*2: After experiencing driving pattern B
and D, permanent DTC is erased.
*3: Indication does not change unless
the ignition switch is turned from ON
to OFF twice even after experiencing
driving pattern B or D.
JSBIA0414GB
August 2012
2012 Pathfinder
EC-610
< BASIC INSPECTION >
[VK56DE]
HOW TO ERASE PERMANENT DTC
4. Turn ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES
>> GO TO 3.
NO
>> END
3.
DRIVE DRIVING PATTERN B
CAUTION:
• Always drive at a safe speed.
• Never erase self-diagnosis results.
• If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving
pattern B and D is reset.
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Use “PERMANENT DTC WORK SUPPORT” mode with CONSULT to drive the vehicle according to driv-
ing pattern B. Refer to
,
EC-527, "DIAGNOSIS DESCRIPTION : Driving
.
With GST
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle according to driving pattern B. Refer to
EC-527, "DIAGNOSIS DESCRIPTION : Driving
.
>> GO TO 4.
4.
CHECK PERMANENT DTC
With CONSULT
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES
>> GO TO 5.
NO
>> END
5.
DRIVE DRIVING PATTERN D
CAUTION:
• Always drive at a safe speed.
• Never erase self-diagnosis results.
• If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving
pattern B and D is reset.
Drive the vehicle according to driving pattern D. Refer to
EC-527, "DIAGNOSIS DESCRIPTION : Driving Pat-
>> GO TO 6.
6.
CHECK PERMANENT DTC
With CONSULT
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
August 2012
2012 Pathfinder
HOW TO ERASE PERMANENT DTC
EC-611
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5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES
>> GO TO 1.
NO
>> END
August 2012
2012 Pathfinder
EC-612
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DTC/CIRCUIT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Description
INFOID:0000000007358466
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT during normal operation of the Engine Control System. When the value in “SPEC” of
“DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the value
in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have one
or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not illuminate
the MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing Condition
INFOID:0000000007358467
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2
, 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30
°
C (68 - 86
°
F)
• Engine coolant temperature: 75 - 95
°
C (167 - 203
°
F)
• Engine speed: Idle
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle until “ATF TEMP SE 1” (A/T
fluid temperature sensor signal) indicates more than 60
°
C (140
°
F).
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection Procedure
INFOID:0000000007358468
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform
2. Check that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “SPEC” of “DATA
MONITOR” mode with CONSULT.
4. Check that monitor items are within the SP value.
5. If NG, go to
August 2012
2012 Pathfinder
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-613
< DTC/CIRCUIT DIAGNOSIS >
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Diagnosis Procedure
INFOID:0000000007358469
OVERALL SEQUENCE
JMBIA1468GB
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EC-614
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DETAILED PROCEDURE
1.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Check that the testing conditions are met. Refer to
.
3. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
NOTE:
PBIB3214E
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-615
< DTC/CIRCUIT DIAGNOSIS >
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Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximately 1 minute because they may fluctuate. It is NG
if the indication is out of the SP value even a little.
OK or NG
OK
>> GO TO 17.
NG (Less than the SP value)>>GO TO 2.
NG (More than the SP value)>>GO TO 3.
2.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
OK or NG
OK
>> GO TO 4.
NG (More than the SP value)>>GO TO 19.
3.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
OK or NG
OK
>> GO TO 6.
NG (More than the SP value)>>GO TO 6.
NG (Less than the SP value)>>GO TO 25.
4.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Stop the engine.
2. Disconnect PCV hose, and then plug it.
3. Start engine.
4. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 6.
5.
CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil.
NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detected after changing engine oil or changing driving con-
ditions.
>>
INSPECTION END
6.
CHECK FUEL PRESSURE
Check fuel pressure. (Refer to
OK or NG
OK
>> GO TO 9.
NG (Fuel pressure is too high)>>Replace “fuel level sensor unit, fuel filter and fuel pump assembly”, refer to
, and then GO TO 8.
NG (Fuel pressure is too low)>>GO TO 7.
7.
DETECT MALFUNCTIONING PART
1. Check the following.
-
Clogged and bent fuel hose and fuel tube
-
Clogged fuel filter
-
Fuel pump and its circuit (Refer to
2. If NG, repair or replace the malfunctioning part. (Refer to
If OK, replace “fuel level sensor unit, fuel filter and fuel pump assembly”. Refer to
.
August 2012
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EC-616
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
>> GO TO 8.
8.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>>
INSPECTION END
NG
>> GO TO 9.
9.
PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Check that each cylinder produces a momentary engine speed drop.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 10.
10.
DETECT MALFUNCTIONING PART
1. Check the following below.
-
Ignition coil and its circuit (Refer to
-
Fuel injector and its circuit (Refer to
-
Intake air leakage
-
Low compression pressure (Refer to
EM-162, "Compression Pressure"
2. If NG, repair or replace the malfunctioning part.
If OK, replace malfunctioning fuel injector. (It may be caused by leakage from fuel injector or clogging.)
>> GO TO 11.
11.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>>
INSPECTION END
NG
>> GO TO 12.
12.
CHECK A/F SENSOR 1 FUNCTION
Perform all DTC Confirmation Procedure related with A/F sensor 1.
• For DTC P0130, P0150, refer to
EC-676, "DTC Confirmation Procedure"
.
• For DTC P0131, P0151, refer to
EC-680, "DTC Confirmation Procedure"
.
• For DTC P0132, P0152, refer to
EC-684, "DTC Confirmation Procedure"
.
• For DTC P0133, P0153, refer to
EC-688, "DTC Confirmation Procedure"
.
• For DTC P2A00, P2A03, refer to
EC-911, "DTC Confirmation Procedure"
OK or NG
OK
>> GO TO 15.
NG
>> GO TO 13.
13.
CHECK A/F SENSOR 1 CIRCUIT
Perform Diagnostic Procedure according to corresponding DTC.
>> GO TO 14.
14.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
August 2012
2012 Pathfinder
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