Nissan Murano Z51 (2008 year). Manual — part 375
TM-3
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P1701 TRANSMISSION CONTROL MODULE
(POWER SUPPLY) . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1705 THROTTLE POSITION SENSOR . . ...
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1722 ESTM VEHICLE SPEED SIGNAL . . ..
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1723 CVT SPEED SENSOR FUNCTION . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1726 ELECTRIC THROTTLE CONTROL
SYSTEM . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1740 LOCK-UP SELECT SOLENOID
VALVE . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection (Lock-up Select Solenoid
Valve) . . . . . . . . . . . . . . . . . ..
P1745 LINE PRESSURE CONTROL . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
P1777 STEP MOTOR . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection (Step Motor) . . . . . ...
P1778 STEP MOTOR - FUNCTION . . . . ...
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
SHIFT POSITION INDICATOR CIRCUIT . . .
Description . . . . . . . . . . . . . . .
Component Function Check . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
SHIFT LOCK SYSTEM . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
Wiring Diagram - CVT SHIFT LOCK SYSTEM - ...
Component Function Check . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (Stop Lamp Switch) . . ..
Component Inspection (Shift Lock relay) . . . ...
Component Inspection (Shift Lock Solenoid) . .
OVERDRIVE CONTROL SWITCH . . . . ..
Description . . . . . . . . . . . . . . . .
Component Function Check . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
ECU DIAGNOSIS . . . . . . . . . ...
TCM . . . . . . . . . . . . . . . . .
Reference Value . . . . . . . . . . . . .
Wiring Diagram - CVT CONTROL SYSTEM - . ...
Fail-safe . . . . . . . . . . . . . . . . .
DTC Inspection Priority Chart . . . . . . . .
DTC Index . . . . . . . . . . . . . . . .
SYMPTOM DIAGNOSIS . . . . . . .
SYSTEM SYMPTOM . . . . . . . . . ...
Symptom Table . . . . . . . . . . . . . .
PRECAUTION . . . . . . . . . . .
PRECAUTIONS . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect . . . . . . . . .
Precaution for Procedure without Cowl Top Cover ..
Precaution for On Board Diagnosis (OBD) System
of CVT and Engine . . . . . . . . . . . .
Precaution for TCM and CVT Assembly Replace-
ment . . . . . . . . . . . . . . . . . ...
Removal and Installation Procedure for CVT Unit
Connector . . . . . . . . . . . . . . . ..
Precaution . . . . . . . . . . . . . . . .
Service Notice or Precaution . . . . . . . . .
ATFTEMP COUNT Conversion Table . . . . ...
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . ...
Special Service Tools . . . . . . . . . . .
Commercial Service Tools . . . . . . . . . .
ON-VEHICLE MAINTENANCE . . . . ..
CVT FLUID . . . . . . . . . . . . . ..
Inspection . . . . . . . . . . . . . . . ..
Changing . . . . . . . . . . . . . . . ...
CVT FLUID COOLER SYSTEM . . . . . ..
Cleaning . . . . . . . . . . . . . . . .
STALL TEST . . . . . . . . . . . . ...
Revision: 2008 October
2009 Murano
TM-4
Inspection and Judgment . . . . . . . . . ..
LINE PRESSURE TEST . . . . . . . . ..
Inspection and Judgment . . . . . . . . . ..
ROAD TEST . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
Check before Engine Is Started . . . . . . . .
Check at Idle . . . . . . . . . . . . . . ..
Cruise Test . . . . . . . . . . . . . . .
CVT POSITION . . . . . . . . . . . .
Inspection and Adjustment . . . . . . . . .
ON-VEHICLE REPAIR . . . . . . . ...
TRANSMISSION CONTROL MODULE . . ..
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Adjustment . . . . . . . . . . . . . . . .
CONTROL DEVICE . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Inspection and Adjustment . . . . . . . . .
CONTROL CABLE . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Inspection and Adjustment . . . . . . . . .
OIL PAN . . . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Inspection . . . . . . . . . . . . . . . ..
SECONDARY SPEED SENSOR . . . . . .
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Inspection . . . . . . . . . . . . . . . ..
DIFFERENTIAL SIDE OIL SEAL . . . . .
2WD . . . . . . . . . . . . . . . . . . ..
2WD : Exploded View . . . . . . . . . . .
2WD : Removal and Installation . . . . . . .
2WD : Inspection . . . . . . . . . . . . ...
AWD . . . . . . . . . . . . . . . . . .
AWD : Exploded View . . . . . . . . . . ...
AWD : Removal and Installation . . . . . . ...
AWD : Inspection . . . . . . . . . . . . ..
AIR BREATHER HOSE . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . .
TRANSAXLE ASSEMBLY . . . . . . . ...
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
Inspection . . . . . . . . . . . . . . . ..
DISASSEMBLY AND ASSEMBLY . . ...
TORQUE CONVERTER AND CONVERTER
HOUSING OIL SEAL . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Disassembly . . . . . . . . . . . . . . ..
Assembly . . . . . . . . . . . . . . . ..
Inspection . . . . . . . . . . . . . . . ..
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .
General Specification . . . . . . . . . . .
Vehicle Speed When Shifting Gears . . . . . .
Stall Speed . . . . . . . . . . . . . . .
Line Pressure . . . . . . . . . . . . . .
Solenoid Valves . . . . . . . . . . . . .
CVT Fluid Temperature Sensor . . . . . . .
Primary Speed Sensor . . . . . . . . . . ..
Secondary Speed Sensor . . . . . . . . . .
Step Motor . . . . . . . . . . . . . . .
Torque Converter . . . . . . . . . . . . ..
Revision: 2008 October
2009 Murano
DIAGNOSIS AND REPAIR WORK FLOW
TM-5
< BASIC INSPECTION >
[CVT: RE0F09B]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000003305975
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor and PNP switch. Then it provides shift control or
lock-up control via CVT solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
CVT system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions 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 malfunctions. A
road test with CONSULT-III (or GST) or a circuit tester connected
should be performed. Follow the “DETAILED FLOW”.
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 malfunctions, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A “Diagnostic Work Sheet” as
shown on the example (Refer to
) 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.
Also check related Service Bulletins.
DETAILED FLOW
1.
COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the diagnosis work sheet. Refer to
>> GO TO 2.
2.
CHECK SYMPTOM 1
Check the following items based on the information obtained from the customer.
• Fail-safe. Refer to
.
• CVT fluid inspection. Refer to
.
• Line pressure test. Refer to
TM-156, "Inspection and Judgment"
.
SAT631IB
SAT632I
SEF234G
Revision: 2008 October
2009 Murano
TM-6
< BASIC INSPECTION >
[CVT: RE0F09B]
DIAGNOSIS AND REPAIR WORK FLOW
• Stall test. Refer to
TM-154, "Inspection and Judgment"
>> GO TO 3.
3.
CHECK DTC
1.
Check DTC.
2.
Perform the following procedure if DTC is detected.
• Record DTC.
• Erase DTC. Refer to
TM-32, "Diagnosis Description"
Is any DTC detected?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
PERFORM DIAGNOSTIC PROCEDURE
Perform “Diagnostic Procedure” for the displayed DTC. Repair detected items.
>> GO TO 5.
5.
PERFORM DTC CONFIRMATION PROCEDURE
Perform “DTC CONFIRMATION PROCEDURE” for the displayed DTC.
Is DTC detected?
YES
>> GO TO 4.
NO
>> GO TO 6.
6.
CHECK SYMPTOM 2
Confirm the symptom described by the customer.
Is any malfunction present?
YES
>> GO TO 7.
NO
>> INSPECTION END
7.
ROAD TEST
Perform “ROAD TEST”. Refer to
.
>> GO TO 8.
8.
CHECK SYMPTOM 3
Confirm the symptom described by the customer.
Is any malfunction present?
YES
>> GO TO 2.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000003305976
INFORMATION FROM CUSTOMER
KEY POINTS
• WHAT. . Vehicle & CVT model
• WHEN. . Date, Frequencies
• WHERE. . Road conditions
• HOW. . Operating conditions, Symptoms
Customer name
MR/MS
Model & Year
VIN
Trans. Model
Engine
Mileage
Malfunction Date
Manuf. Date
In Service Date
Frequency
Continuous
Intermittent (
times a day)
Revision: 2008 October
2009 Murano
DIAGNOSIS AND REPAIR WORK FLOW
TM-7
< BASIC INSPECTION >
[CVT: RE0F09B]
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DIAGNOSTIC WORK SHEET
Symptoms
Vehicle does not move.
(
Any position
Particular position)
No shift
Lock-up malfunction
Shift shock or slip
(
N
→
D
N
→
R
Lock-up
Any drive position)
Noise or vibration
No pattern select
Others
(
)
Malfunction Indicator Lamp (MIL)
Continuously lit
Not lit
1
Read the item on cautions concerning fail-safe and understand the customer's complaint.
2
CVT fluid inspection, stall test and line pressure test
CVT fluid inspection
Leak (Repair leak location.)
State
Amount
Stall test
Torque converter one-way clutch
Reverse brake
Forward clutch
Steel belt
Engine
Line pressure low
Primary pulley
Secondary pulley
Line pressure inspection - Suspected part:
3
Perform self-diagnosis.
Enter checks for detected items.
4
Perform road test.
4-1.
Check before engine is started
4-2.
Check at idle
4-3.
Cruise test
Check malfunction phenomena to repair or replace malfunctioning part after completing all road tests.
5
Drive vehicle to check that the malfunction phenomenon has been resolved.
6
Erase the results of the self-diagnosis from the TCM and the ECM.
Revision: 2008 October
2009 Murano
TM-8
< BASIC INSPECTION >
[CVT: RE0F09B]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Precaution for TCM
and CVT Assembly Replacement
INFOID:0000000003674388
CAUTION:
• Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in
TCM. (Connect CONSULT-III, and then turn ignition switch OFF.)
• When replacing CVT assembly or TCM, refer to the pattern table below and erase the EEPROM in the
TCM if necessary.
EEPROM ERASING PATTERNS
METHOD FOR ERASING THE EEPROM IN THE TCM
1.
Turn ignition switch ON.
2.
Move selector lever to “R” position.
3.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
4.
Press the brake pedal and turn the brake switch ON.
5.
Press the accelerator pedal (0.5/8 - 4/8 throttle) not to exceed the half, and hold it in the half or less open
position. (This will set the closed throttle position signal to OFF and the wide open throttle position signal
to OFF.)
6.
Perform “ERASE”.
7.
Wait 3 seconds and then release the accelerator pedal.
8.
Turn ignition switch OFF.
METHOD FOR WRITING DATA FROM THE ROM ASSEMBLY IN THE TRANSAXLE
In the following procedure, the TCM reads data from the ROM assembly and writes it to the EEPROM in the
TCM.
1.
Erase the EEPROM in the TCM.
2.
Move selector lever to “P” position.
3.
Turn ignition switch ON.
CHECK METHOD
• Standard: About 2 seconds after the ignition switch ON, the CVT indicator lamp lights up for 2 seconds.
• Non-standard: Even after the ignition switch ON, the CVT indicator lamp does not light up after 2 seconds or
illuminates immediately.
CAUTION:
Perform in the “P” or “N” position.
Action for Non-standard
• Replace the CVT assembly.
• Replace the TCM.
CVT assembly
TCM
Erasing EEPROM in TCM
Remarks
Replaced
Replaced
Not required
Not required because the EEPROM in the TCM is in
the default state. (CVT assembly must be replaced
first.)
Not replaced
Replaced
Not required
Not required because the EEPROM in the TCM is in
the default state.
Replaced
Not replaced
Required
Required because data has been written in the EE-
PROM in the TCM and because the TCM cannot write
data from the ROM assembly in the transmission.
Revision: 2008 October
2009 Murano
CVT SYSTEM
TM-9
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
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FUNCTION DIAGNOSIS
CVT SYSTEM
System Diagram
INFOID:0000000003305978
JPDIA0595GB
Revision: 2008 October
2009 Murano
TM-10
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
CVT SYSTEM
Component Parts Location
INFOID:0000000003305979
JPDIA0621GB
Revision: 2008 October
2009 Murano
MECHANICAL SYSTEM
TM-11
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
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MECHANICAL SYSTEM
Cross-Sectional View
INFOID:0000000003305980
1.
Converter housing
2.
Oil pump
3.
Forward clutch
4.
Reverse brake
5.
Planetary carrier
6.
Primary pulley
7.
Steel belt
8.
Sun gear
9.
Side cover
10. Internal gear
11.
Secondary pulley
12. Final gear
13. Differential case
14. Idler gear
15. Reduction gear
16. Taper roller bearing
17. Output gear
18. Parking gear
19. Input shaft
20. Torque converter
SCIA4837E
Revision: 2008 October
2009 Murano
TM-12
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
MECHANICAL SYSTEM
System Diagram
INFOID:0000000003317230
System Description
INFOID:0000000003305982
Transmits the power from the engine to the drive wheel.
JPDIA0595GB
Revision: 2008 October
2009 Murano
MECHANICAL SYSTEM
TM-13
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
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Component Parts Location
INFOID:0000000003317231
Component Description
INFOID:0000000003305984
JPDIA0621GB
Revision: 2008 October
2009 Murano
TM-14
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
MECHANICAL SYSTEM
Item
Function
Torque converter
The torque converter is the device that increases the engine torque as well as the con-
ventional AT and transmits it to the transaxle.
Oil pump
The adoption of a trochoidal oil pump with a flow control valve actuated directly by the
engine enables the sufficient discharge from an oil pump in the low-rpm range and the
adequate discharge adjustments in the high-rpm range.
Planetary gear
Perform the transmission of drive power and the switching of forward/backward move-
ment.
Forward clutch
Reverse brake
Primary pulley
It is composed of a pair of pulleys (the groove width is changed freely in the axial direc-
tion) and the steel belt (the steel star wheels are placed continuously and the belt is guid-
ed with the multilayer steel rings on both sides). The groove width changes according to
wrapping radius of steel belt and pulley from low status to overdrive status continuously
with non-step. It is controlled with the oil pressures of primary pulley and secondary pul-
ley.
Secondary pulley
Steel belt
Output gear
Reduction gear consists of primary deceleration (output gear and idler gear in pair) and
secondary deceleration (reduction gear and final gear in pair). Each of them uses a he-
lical gear.
Idler gear
Reduction gear
Final gear
Differential
Manual shaft
The parking rod rotates the parking pole and the parking pole engages with the parking
gear when the manual shaft is in “P” position. As a result the parking gear and the output
axis are fixed.
Parking rod
Parking pawl
Parking gear
Revision: 2008 October
2009 Murano
HYDRAULIC CONTROL SYSTEM
TM-15
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
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HYDRAULIC CONTROL SYSTEM
System Diagram
INFOID:0000000003305985
System Description
INFOID:0000000003305986
The hydraulic control mechanism consists of the oil pump directly driven by the engine, the hydraulic control
valve that controls line pressure and transmission, and the input signal line.
LINE PRESSURE AND SECONDARY PRESSURE CONTROL
• When an input torque signal equivalent to the engine driving force is transmitted from the ECM to the TCM,
the TCM controls the line pressure solenoid valve and secondary pressure solenoid valve.
• Line pressure solenoid valve activates pressure regulator valve, and line pressure from oil pump is adjusted
for the optimum driving condition. Secondary pressure is controlled by lowering line pressure.
JPDIA0589GB
SCIA1846E
Revision: 2008 October
2009 Murano
TM-16
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
HYDRAULIC CONTROL SYSTEM
Normal Control
Optimize the line pressure and secondary pressure, depending on driving conditions, on the basis of the throt-
tle position, the engine speed, the primary pulley (input) revolution speed, the secondary pulley (output) revo-
lution speed, the brake signal, the PNP switch signal, the lock-up signal, the voltage, the target gear ratio, the
fluid temperature, and the fluid pressure.
Feedback Control
For the normal fluid control and the select fluid control, secondary pressure is detected for feedback control by
using a secondary pressure sensor to set a high-precision secondary pressure.
Revision: 2008 October
2009 Murano
HYDRAULIC CONTROL SYSTEM
TM-17
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
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Component Parts Location
INFOID:0000000003317233
Component Description
INFOID:0000000003305988
TRANSAXLE ASSEMBLY
JPDIA0621GB
Revision: 2008 October
2009 Murano
TM-18
< FUNCTION DIAGNOSIS >
[CVT: RE0F09B]
HYDRAULIC CONTROL SYSTEM
EXCEPT TRANSAXLE ASSEMBLY
Name
Function
Torque converter regulator valve
Optimizes the supply pressure for the torque converter depending on driving conditions.
Pressure regulator valve
Optimizes the discharge pressure from the oil pump depending on driving conditions.
TCC control valve
• Activates or deactivates the lock-up.
• Locks up smoothly by opening lock-up operation excessively.
Shift control valve
Controls inflow/outflow of line pressure from the primary pulley depending on the stroke
difference between the stepping motor and the primary pulley.
Secondary valve
Controls the line pressure from the secondary pulley depending on operating conditions.
Clutch regulator valve
Adjusts the clutch operating pressure depending on operating conditions.
Manual valve
Transmits the clutch operating pressure to each circuit in accordance with the selected
position.
Select control valve
Engages forward clutch, reverse brake smoothly depending on select operation.
Select switch valve
The select switch valve enables to select engagement/disengagement of lock-up clutch
and that of forward clutch and reverse clutch.
TCC solenoid valve
Secondary pressure solenoid valve
Line pressure solenoid valve
Step motor
Lock-up select solenoid valve
Primary speed sensor
Secondary speed sensor
PNP switch
Primary pulley
TM-13, "Component Description"
Secondary pulley
Forward clutch
Torque converter
Name
Function
TCM
Judges driving condition according to signals from each sensor, and optimally controls
variable speed mechanism.
Accelerator pedal position sensor
Revision: 2008 October
2009 Murano
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