Nissan Murano Z50 (2006 year). Manual — part 81

BASIC SERVICE PROCEDURE

EC-75

Revision: 2006 August

2006 Murano

Check ignition timing.

Procedure After Replacing ECM

NBS006TF

When replacing ECM, the following procedure must be performed.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

BL-238, "ECM Re-communicating Function"

Perform

EC-75, "VIN Registration"

Perform

EC-75, "Accelerator Pedal Released Position Learning"

Perform

EC-76, "Throttle Valve Closed Position Learning"

Perform

EC-76, "Idle Air Volume Learning"

VIN Registration

NBS002Z9

DESCRIPTION

VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.

NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

OPERATION PROCEDURE

With CONSULT-II

Check the VIN of the vehicle and note it. Refer to

GI-48, "IDENTIFICATION INFORMATION"

Turn ignition switch ON and engine stopped.

Select “VIN REGISTRATION” in “WORK SUPPORT” mode.

Follow the instruction of CONSULT-II display.

Accelerator Pedal Released Position Learning

NBS002ZA

DESCRIPTION

Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.

OPERATION PROCEDURE

Make sure that accelerator pedal is fully released.

Turn ignition switch ON and wait at least 2 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON and wait at least 2 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

PBIB1382E

PBIB2242E

EC-76

BASIC SERVICE PROCEDURE

Revision: 2006 August

2006 Murano

Throttle Valve Closed Position Learning

NBS002ZB

DESCRIPTION

Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.

OPERATION PROCEDURE

Make sure that accelerator pedal is fully released.

Turn ignition switch ON.

Turn ignition switch OFF wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning

NBS002ZC

DESCRIPTION

Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:

●

Each time electric throttle control actuator or ECM is replaced.

●

Idle speed or ignition timing is out of specification.

PREPARATION

Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

●

Battery voltage: More than 12.9V (At idle)

●

Engine coolant temperature: 70 - 100

C (158 - 212

●

PNP switch: ON

●

Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is start the headlamp will not be illuminated.

●

Steering wheel: Neutral (Straight-ahead position)

●

Vehicle speed: Stopped

●

Transmission: Warmed-up

–

With CONSULT-II: Drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “CVT” system indi-
cates less than 0.9V.

–

Without CONSULT-II: Drive vehicle for 10 minutes.

OPERATION PROCEDURE

With CONSULT-II

Perform

EC-75, "Accelerator Pedal Released Position Learning"

Perform

EC-76, "Throttle Valve Closed Position Learning"

Start engine and warm it up to normal operating temperature.

Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.

Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.

SEF217Z

BASIC SERVICE PROCEDURE

EC-77

Revision: 2006 August

2006 Murano

Touch “START” and wait 20 seconds.

Make sure that “CMPLT” is displayed on CONSULT-II screen. If
“CMPLT” is not displayed, Idle Air Volume Learning will not be
carried out successfully. In this case, find the cause of the inci-
dent by referring to the DIAGNOSTIC PROCEDURE below.

Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.

Without CONSULT-II

NOTE:

●

It is better to count the time accurately with a clock.

●

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.

Perform

EC-75, "Accelerator Pedal Released Position Learning"

Perform

EC-76, "Throttle Valve Closed Position Learning"

Start engine and warm it up to normal operating temperature.

Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.

Turn ignition switch OFF and wait at least 10 seconds.

Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

Repeat the following procedure quickly five times within 5 seconds.

Fully depress the accelerator pedal.

Fully release the accelerator pedal.

Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.

Fully release the accelerator pedal within 3 seconds after the MIL turned ON.

10. Start engine and let it idle.

11. Wait 20 seconds.

12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the

specifications.

SEF454Y

ITEM

SPECIFICATION

Idle speed

650

50 rpm (in P or N position)

Ignition timing

BTDC (in P or N position)

MBIB0238E

SEC897C

EC-78

BASIC SERVICE PROCEDURE

Revision: 2006 August

2006 Murano

13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried

out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE-
DURE below.

DIAGNOSTIC PROCEDURE

If idle air volume learning cannot be performed successfully, proceed as follows:
1.

Check that throttle valve is fully closed.

Check PCV valve operation.

Check that downstream of throttle valve is free from air leakage.

When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform

EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform Idle Air Volume Learning all over again:

●

Engine stalls.

●

Erroneous idle.

Fuel Pressure Check

NBS002ZD

FUEL PRESSURE RELEASE

With CONSULT-II

Turn ignition switch ON.

Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.

Start engine.

After engine stalls, crank it 2 or 3 times to release all fuel pres-
sure.

Turn ignition switch OFF.

Without CONSULT-II

Remove fuel pump fuse located in IPDM E/R.

Start engine.

After engine stalls, crank it 2 or 3 times to release all fuel pres-
sure.

Turn ignition switch OFF.

Reinstall fuel pump fuse after servicing fuel system.

FUEL PRESSURE CHECK

CAUTION:

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

NOTE:

●

Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because Z50 models do not have fuel return system.

●

Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.

ITEM

SPECIFICATION

Idle speed

650

50 rpm (in P or N position)

Ignition timing

BTDC (in P or N position)

SEF214Y

PBIB2087E

BASIC SERVICE PROCEDURE

EC-79

Revision: 2006 August

2006 Murano

Release fuel pressure to zero. Refer to

EC-78, "FUEL PRESSURE RELEASE"

Install the inline fuel quick disconnected fitting between fuel
damper and fuel injector tube.

Connect the fuel pressure test gauge (quick connector adapter
hose) to the inline fuel quick disconnected fitting.

Turn ignition switch ON and check for fuel leakage.

Start engine and check for fuel leakage.

Read the indication of fuel pressure gauge.

If result is unsatisfactory, go to next step.

Check the following.

●

Fuel hoses and fuel tubes for clogging

●

Fuel filter for clogging

●

Fuel pump

●

Fuel pressure regulator for clogging

If OK, replace fuel pressure regulator.
If NG, repair or replace.

At idling:

Approximately 350 kPa (3.57 kg/cm

, 51 psi)

PBIB1376E

EC-80

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

TROUBLE DIAGNOSIS

PFP:00004

Trouble Diagnosis Introduction

NBS002ZE

INTRODUCTION

The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.

It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.

A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on

EC-81

Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on

EC-85

should be used.

Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.

MEF036D

SEF233G

SEF234G

TROUBLE DIAGNOSIS

EC-81

Revision: 2006 August

2006 Murano

WORK FLOW
Overall Sequence

PBIB2267E

EC-82

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

Detailed Flow

GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the

EC-84, "DIAGNOSTIC WORKSHEET"

>> GO TO 2.

CHECK DTC*

Check DTC*

Perform the following procedure if DTC*

is displayed.

–

Record DTC*

and freeze frame data*

. (Print them out with CONSULT-II or GST.)

–

Erase DTC*

. (Refer to

EC-58, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"

–

Study the relationship between the cause detected by DTC*

and the symptom described by the cus-

tomer. (Symptom Matrix Chart is useful. Refer to

EC-89, "Symptom Matrix Chart"

Check related service bulletins for information.

Is any symptom described and any DTC detected?

Symptom is described, DTC*

is displayed>>GO TO 3.

Symptom is described, DTC*

is not displayed>>GO TO 4.

Symptom is not described, DTC*

is displayed>>GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer (except MIL ON).
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-II to the vehicle in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis
results.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-II to the vehicle in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis
results.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

TROUBLE DIAGNOSIS

EC-83

Revision: 2006 August

2006 Murano

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC*

, and then make sure that DTC*

is detected

again.
At this time, always connect CONSULT-II to the vehicle, and check diagnostic results in real time on “DATA
MONITOR (AUTO TRIG)”.
If two or more DTCs*

are detected, refer to

EC-86, "DTC Inspection Priority Chart"

and determine trouble

diagnosis order.
NOTE:

●

Freeze frame data*

is useful if the DTC*

is not detected.

●

Perform Overall Function Check if DTC Confirmation Procedure is not included on Service Manual. This
simplified check procedure is an effective alternative though DTC*

cannot be detected during this check.

If the result of Overall Function Check is NG, it is the same as the detection of DTC*

by DTC Confirma-

tion Procedure.

Is DTC*

detected?

Yes

>> GO TO 10.

>> Check according to

EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

PERFORM BASIC INSPECTION

Perform

EC-68, "Basic Inspection"

With CONSULT-II>>GO TO 7.
Without CONSULT-II>>GO TO 9.

PERFORM DATA MONITOR (SPEC) MODE

With CONSULT-II

Make sure that “MAS A/F SE-B1”, “B/FUEL SCHDL”, and “A/F
ALPHA-B1”, “A/F ALPHA-B2” are within the SP value using CON-
SULT-II “DATA MONITOR (SPEC)” mode. Refer to

EC-133, "Diag-

nostic Procedure"

Are they within the SP value?

Yes

>> GO TO 9.

>> GO TO 8.

DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Detect malfunctioning part according to

EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

Is malfunctioning part detected?

Yes

>> GO TO 11.

>> GO TO 9.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM MATRIX CHART

Detect malfunctioning system according to

EC-89, "Symptom Matrix Chart"

based on the confirmed symptom

in step 4, and determine the trouble diagnosis order based on possible causes and symptom.

>> GO TO 10.

SEF601Z

EC-84

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

10.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:
The Diagnostic Procedure in EC section described based on open circuit inspection. A short circuit inspection
is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in

GI-

27, "How to Perform Efficient Diagnosis for an Electrical Incident"

Is malfunctioning part detected?

Yes

>> GO TO 11.

>> Monitor input data from related sensors or check voltage of related ECM terminals using CON-

SULT-II. Refer to

EC-127, "CONSULT-II Reference Value in Data Monitor"

EC-102, "ECM Termi-

nals and Reference Value"

11.

REPAIR OR REPLACE THE MALFUNCTIONING PART

Repair or replace the malfunctioning part.

Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.

Check DTC. If DTC is displayed, erase it, refer to

EC-58, "HOW TO ERASE EMISSION-RELATED DIAG-

NOSTIC INFORMATION"

>> GO TO 12.

12.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Overall Function Check again,
and then make sure that the malfunction have been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure
that the symptom is not detected.

OK or NG

NG (DTC*

is detected)>>GO TO 10.

NG (Symptom remains)>>GO TO 6.
OK

>> 1. Before returning the vehicle to the customer, make sure to erase unnecessary DTC*

in ECM

and TCM (Transmission Control Module). (Refer to

EC-58, "HOW TO ERASE EMISSION-

RELATED DIAGNOSTIC INFORMATION"

and

CVT-30, "HOW TO ERASE DTC"

2. If the completion of SRT is needed, drive vehicle under the specific driving pattern. Refer to

EC-

55, "Driving Pattern"

3. INSPECTION END

*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.

DIAGNOSTIC WORKSHEET
Description

There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MIL to come on steady or blink and
DTC to be detected. Examples:

●

Vehicle ran out of fuel, which caused the engine to misfire.

●

Fuel filler cap was left off or incorrectly screwed on, allowing fuel
to evaporate into the atmosphere.

SEF907L

TROUBLE DIAGNOSIS

EC-85

Revision: 2006 August

2006 Murano

Worksheet Sample

MTBL0017

EC-86

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

DTC Inspection Priority Chart

NBS002ZF

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:

●

If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to

EC-152, "DTC U1000, U1001 CAN COMMUNICATION LINE"

●

If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to

EC-155, "DTC U1010 CAN COMMUNICATION"

Priority

Detected items (DTC)

●

U1000 U1001 CAN communication line

●

U1010 CAN communication

●

P0101 P0102 P0103 Mass air flow sensor

●

P0112 P0113 P0127 Intake air temperature sensor

●

P0117 P0118 P0125 Engine coolant temperature sensor

●

P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor

●

P0128 Thermostat function

●

P0181 P0182 P0183 Fuel tank temperature sensor

●

P0327 P0328 Knock sensor

●

P0335 Crankshaft position sensor (POS)

●

P0340 P0345 Camshaft position sensor (PHASE)

●

P0460 P0461 P0462 P0463 Fuel level sensor

●

P0500 Vehicle speed sensor

●

P0605 ECM

●

P0643 Sensor power supply

●

P0705 P0850 Park/Neutral position (PNP) switch

●

P1610 - P1615 NATS

●

P1700 CVT control system

●

P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor

TROUBLE DIAGNOSIS

EC-87

Revision: 2006 August

2006 Murano

●

P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater

●

P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

●

P0075 P0081 Intake valve timing control solenoid valve

●

P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1

●

P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2

●

P0441 EVAP control system purge flow monitoring

●

P0443 P0444 P0445 EVAP canister purge volume control solenoid valve

●

P0447 P0448 EVAP canister vent control valve

●

P0451 P0452 P0453 EVAP control system pressure sensor

●

P0550 Power steering pressure sensor

●

P0603 ECM power supply

●

P0710 P0715 P0720 P0740 P0744 P0745 P0746 P0776 P0778 P0840 P0845 P1740 CVT related sensors, solenoid
valves and switches

●

P1217 Engine over temperature (OVERHEAT)

●

P1720 Vehicle speed sensor

●

P1777 P1778 CVT step motor

●

P1805 Brake switch

●

P2100 P2103 Throttle control motor relay

●

P2101 Electric throttle control function

●

P2118 Throttle control motor

●

P0011 P0021 Intake valve timing control

●

P0171 P0172 P0174 P0175 Fuel injection system function

●

P0300 - P0306 Misfire

●

P0420 P0430 Three way catalyst function

●

P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)

●

P0455 EVAP control system (GROSS LEAK)

●

P0506 P0507 Idle speed control system

●

P1148 P1168 Closed loop control

●

P1211 TCS control unit

●

P1212 TCS communication line

●

P1421 Cold start control

●

P1564 ASCD steering switch

●

P1572 ASCD brake switch

●

P1574 ASCD vehicle speed sensor

●

P1777 P1778 CVT step motor

●

P1715 Primary speed sensor

●

P1800 VIAS control solenoid valve

●

P2119 Electric throttle control actuator

Priority

Detected items (DTC)

EC-88

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

Fail-Safe Chart

NBS002ZG

When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up.

●

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when
there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands
the driver to repair the malfunction.

DTC No.

Detected items

Engine operating condition in fail-safe mode

P0102
P0103

Mass air flow sensor circuit

Engine speed will not rise more than 2,400 rpm due to the fuel cut.

P0117
P0118

Engine coolant tempera-
ture sensor circuit

Engine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-II displays the engine coolant temperature decided by ECM.

Condition

Engine coolant temperature decided

(CONSULT-II display)

Just as ignition switch is turned
ON or START

C (104

More than approx. 4 minutes after
ignition ON or START

C (176

Except as shown above

40 - 80

C (104 - 176

(Depends on the time)

When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.

P0122
P0123
P0222
P0223
P2135

Throttle position sensor

The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.

P0643

Sensor power supply

ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

P2100
P2103

Throttle control motor relay

ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

P2101

Electric throttle control
function

ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

P2118

Throttle control motor

ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

P2119

Electric throttle control
actuator

(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.

(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.

(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or
more.

P2122
P2123
P2127
P2128
P2138

Accelerator pedal position
sensor

Engine operating condition in fail-safe mode

Engine speed will not rise more than 2,500 rpm due to the fuel cut