Nissan Murano. Manual — part 507
EC-138
< SYSTEM DESCRIPTION >
[VQ35DE]
DIAGNOSIS SYSTEM (ECM)
*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.
DTC WORK SUPPORT MODE
Test Item
*: DTC P1456 does not apply to this model but appears in DTC Work Support Mode screens.
SRT & P-DTC MODE
SRT STATUS Mode
• For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT screen; for items whose SRT
codes are not set, “INCMP” is displayed.
• “SRT STATUS” provides the presence or absence of permanent DTCs stored in ECM memory.
PERMANENT DTC STATUS Mode
How to display permanent DTC status
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” in “DTC & SRT CONFIRMATION” mode with CONSULT.
NOTE:
Permanent DTCs stored in ECM memory are displayed on the CONSULT screen to show if a driving pat-
tern required for erasing permanent DTCs is complete (CMPLT) or incomplete (INCMP).
CAUTION:
INT V/T ASSIGN
ANGLE
• Engine: Return to the original
non-standard condition
• Change intake valve timing using
CONSULT.
If malfunctioning symptom disap-
pears, see CHECK ITEM.
• Harness and connectors
• Intake valve timing control sole-
noid valve
ALTERNATOR
DUTY
• Engine: Idle
• Change duty ratio using CON-
SULT.
Battery voltage changes.
• Harness and connectors
• IPDM E/R
• Alternator
TEST ITEM
CONDITION
JUDGMENT
CHECK ITEM (REMEDY)
Test mode
Test item
Corresponding DTC No.
Reference page
EVAPORATIVE SYSTEM
EVP V/S LEAK P0456/P1456*
P0456
PURG VOL CN/V P1444
P0443
PURG FLOW P0441
P0441
A/F SEN1
A/F SEN1(B1) P1278/P1279
—
—
A/F SEN1(B1) P1276
P0130
A/F SEN1(B2) P1288/P1289
—
—
A/F SEN1(B2) P1286
P0150
HO2S2
HO2S2(B1) P1146
P0138
HO2S2(B1) P1147
P0137
HO2S2(B1) P0139
P0139
HO2S2(B2) P1166
P0158
HO2S2(B2) P1167
P0157
HO2S2(B2) P0159
P0159
DIAGNOSIS SYSTEM (ECM)
EC-139
< SYSTEM DESCRIPTION >
[VQ35DE]
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Since the “PERMANENT DTC STATUS” screen displays the previous trip information, repeat the
following twice to update the information: “Ignition switch OFF”, “Wait for more than 10 seconds”
and “Ignition switch ON”.
NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
PERMANENT DTC WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to complete the driving pattern that is required for erasing
permanent DTC.
NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.
JSBIA0062GB
EC-140
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DTC/CIRCUIT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Description
INFOID:0000000009719876
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” in “DATA MONI-
TOR” mode of CONSULT during normal operation of the Engine Control System. When the value in “SPEC” in
“DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the value
in “SPEC” in “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)
Component Function Check
INFOID:0000000009719877
1.
START
Check that all of the following conditions are satisfied.
• 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)
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID TEMP SE” (CVT
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.
• Engine speed: Idle
>> GO TO 2.
2.
PERFORM “SPEC” OF “DATA MONITOR” MODE
With CONSULT
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1.
EC-13, "BASIC INSPECTION : Special Repair Requirement"
2.
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.
3.
Check that monitor items are within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Go to
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-141
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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Diagnosis Procedure
INFOID:0000000009719878
OVERALL SEQUENCE
JMBIA1468GB
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