Nissan Murano. Manual - part 507

EC-138

< SYSTEM DESCRIPTION >

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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

EC-324

PURG VOL CN/V P1444

P0443

EC-293

PURG FLOW P0441

P0441

EC-288

A/F SEN1

A/F SEN1(B1) P1278/P1279

—

—

A/F SEN1(B1) P1276

P0130

EC-199

A/F SEN1(B2) P1288/P1289

—

—

A/F SEN1(B2) P1286

P0150

EC-199

HO2S2

HO2S2(B1) P1146

P0138

EC-218

HO2S2(B1) P1147

P0137

EC-211

HO2S2(B1) P0139

P0139

EC-227

HO2S2(B2) P1166

P0158

EC-218

HO2S2(B2) P1167

P0157

EC-211

HO2S2(B2) P0159

P0159

EC-227

DIAGNOSIS SYSTEM (ECM)

EC-139

< SYSTEM DESCRIPTION >

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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.

Perform “

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 

EC-141, "Diagnosis Procedure"

.

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-141

< DTC/CIRCUIT DIAGNOSIS >

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Diagnosis Procedure

INFOID:0000000009719878

OVERALL SEQUENCE

JMBIA1468GB