2008 NISSAN TEANA cruise control

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-51
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DiagramINFOID:0000000003856477
System DescriptionINFOID:0000000003856478
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunc-
tion occurs in the ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE lamp in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET lamp in combination meter illuminates.)
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will maintain the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
 CANCEL switch is pressed
 More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
JMBIA1494GB
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed
controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
TCM (VQ35DE engine)
Park/neutral position (PNP) switch (VQ25DE
engine)Gear position
Powertrain revolution*
ABS actuator and electric unit (control unit) Vehicle speed*

EC-52
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
 Brake pedal is depressed
 Selector lever position is N, P or R
 Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
 TCS system is operated
 CVT control system has a malfunction. Refer to EC-280, "
Description".
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
 Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
 Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF while ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will maintain the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing MAIN switch
is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must
meet following conditions.
 Brake pedal is released
 Selector lever position is other than P and N
 Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-119
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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HO2S2 HTR (B1)
ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals. HO2S2 HTR (B2)
I/P PULLY SPD rpm Indicates the engine speed computed from the
turbine revolution sensor signal.
VEHICLE SPEED km/h or mph The vehicle speed computed from the vehicle
speed signal sent from TCM is displayed.
IDL A/V LEARN YET/CMPLT Displays the condition of idle air volume learning
YET: Idle Air Volume Learning has not been per-
formed yet.
CMPLT: Idle Air Volume Learning has already
been performed successfully.
ENG OIL TEMP°C or °F The engine oil temperature (determined by the
signal voltage of the engine oil temperature sen-
sor) is displayed.
TRVL AFTER MIL km or mile  Distance traveled while MI is activated.
A/F S1 HTR(B1)
% Air fuel ratio (A/F) sensor 1 heater control value
computed by ECM according to the input signals.
 The current flow to the heater becomes larger as
the value increases. A/F S1 HTR(B2)
AC PRESS SEN V The signal voltage from the refrigerant pressure
sensor is displayed.
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.
SET VHCL SPD km/h or mph  The preset vehicle speed is displayed.
MAIN SW ON/OFF Indicates [ON/OFF] condition from MAIN switch
signal.
CANCEL SW ON/OFF Indicates [ON/OFF] condition from CANCEL
switch signal.
RESUME/ACC SW ON/OFF Indicates [ON/OFF] condition from RESUME/AC-
CELERATE switch signal.
SET SW ON/OFF Indicates [ON/OFF] condition from SET/COAST
switch signal.
BRAKE SW1 ON/OFF Indicates [ON/OFF] condition from ASCD brake
switch signal or ASCD clutch switch.
BRAKE SW2 ON/OFF Indicates [ON/OFF] condition of stop lamp switch
signal.
VHCL SPD CUT NON/CUT Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT NON/CUT Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low, and ASCD operation is cut off.
AT O D M O N I TO R O N / O F F Indicates [ON/OFF] condition of CVT O/D ac-
cording to the input signal from the TCM.
AT OD CANCEL ON/OFF Indicates [ON/OFF] condition of CVT O/D cancel
request signal.
CRUISE LAMP ON/OFF Indicates [ON/OFF] condition of CRUISE lamp
determined by the ECM according to the input
signals. Monitored item Unit Description Remarks

ASCD INDICATOR
EC-323
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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ASCD INDICATOR
DescriptionINFOID:0000000003856824
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE lamp illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that ASCD
system is ready for operation.
SET lamp illuminates when the following conditions are met.
 CRUISE lamp is illuminated.
 SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of the
ASCD setting.
SET lamp remains lit during ASCD control.
Refer to EC-51, "
System Diagram" for the ASCD function.
Component Function CheckINFOID:0000000003856825
1.CHECK ASCD INDICATOR FUNCTION
Check ASCD indicator under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-323, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856826
1.CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis for DTC U1000, U1001. Refer to EC-135, "
Diagnosis Procedure".
2.CHECK COMBINATION METER FUNCTION
Refer to MWI-33, "
CONSULT-III Function (METER/M&A)".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning part.
3.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace combination meter.
NO >> Repair or replace malfunctioning part.
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP  Ignition switch: ON MAIN switch: Pressed at the
1st time →
at the 2nd timeON → OFF
SET LAMP MAIN switch: ON
 When vehicle speed is be-
tween 40 km/h (25 MPH) and
144 km/h (89 MPH) ASCD: Operating ON
 ASCD: Not operating OFF

LAN
CAN COMMUNICATION SYSTEM
LAN-23
< FUNCTION DIAGNOSIS >[CAN]
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Refer to LAN-19, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Signal name/Connecting unitECM
ADP
AV
HVAC
M&A
STRG
BCM
ABS
TCM
IPDM-E
A/C compressor request signal TR
Accelerator pedal position signal T R R
ASCD CRUISE indicator signal T R
ASCD operation signal T R
ASCD SET indicator signal T R
Closed throttle position signal T R
Cooling fan speed request signal TR
Engine and CVT integrated control signalTR
RT
Engine coolant temperature signal T R
Engine speed signal T R R R
Engine status signal T R R
Fuel consumption monitor signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
System setting signalTR
RT R
RT
Rear window defogger switch signal T R
A/C switch signal R T T
Blower fan motor switch signal R T T
Distance to empty signal R T
Fuel level low warning signal R T
Sleep-ready signalTR
RT
Sport mode switch signal T R
Vehicle speed signalRR T R RR
RR R R T
Wake up signal T R
Steering angle sensor signal T R
Buzzer output signal R T
Door switch signal R R R T R
Door unlock signal R T
Front fog light request signal R T R
Front wiper request signalTR
Headlamp washer request signal T R
High beam request signal R T R
Hood switch signalTR
Horn reminder signalTR
Ignition switch ON signalTR
RT

MWI-34
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
W TEMP METER
[°C] XValue of engine coolant temperature signal is received from ECM via CAN com-
munication.
NOTE:
215 is displayed when the malfunction signal is input.
ABS W/L
[On/Off]Status of ABS warning lamp detected from ABS warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
VDC/TCS IND
[On/Off]Status of VDC OFF indicator lamp detected from VDC OFF indicator lamp signal
is received from ABS actuator and electric unit (control unit) via CAN communica-
tion.
SLIP IND
[On/Off]Status of SLIP indicator lamp detected from slip indicator lamp signal received
from ABS actuator and electric unit (control unit) via CAN communication.
BRAKE W/L
[On/Off]Status of brake warning lamp detected from brake warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
NOTE:
Displays “Off” if the brake warning lamp is illuminated when the valve check starts,
the parking brake switch is turned ON or the brake fluid level switch is turned ON.
DOOR W/L
[On/Off]Status of door warning detected from door switch signal received from BCM via
CAN communication.
TRUNK/GLAS-H
[On/Off]Status of trunk warning detected from trunk switch signal received from BCM via
CAN communication.
HI-BEAM IND
[On/Off]Status of high beam indicator lamp detected from high beam request signal is re-
ceived from BCM via CAN communication.
TURN IND
[On/Off]Status of turn indicator lamp detected from turn indicator signal is received from
BCM via CAN communication.
FR FOG IND
[On/Off]Status of front fog light indicator lamp detected from front fog light request signal
is received from BCM via CAN communication.
RR FOG IND
[On/Off]Status of rear fog light indicator lamp detected from rear fog light request signal is
received from BCM via CAN communication.
LIGHT IND
[On/Off]Status of light indicator lamp detected from position light request signal is received
from BCM via CAN communication.
OIL W/L
[On/Off]Status of oil pressure warning lamp detected from oil pressure switch signal is re-
ceived from BCM via CAN communication.
MIL
[On/Off] Status of malfunction indicator lamp detected from malfunctioning indicator lamp
signal is received from ECM via CAN communication.
CRUISE IND
[On/Off]Status of CRUISE indicator detected from ASCD status signal is received from
ECM via CAN communication.
SPORT IND
[On/Off]Status of SPORT indicator detected from sport mode switch signal is received
from control device.
4WD W/L
[On/Off]This item is displayed, but cannot be monitored.
4WD LOCK IND
[On/Off]This item is displayed, but cannot be monitored.
FUEL W/L
[On/Off]Low-fuel warning lamp status detected by the identified fuel level.
WASHER W/L
[On/Off]This item is displayed, but cannot be monitored.
KEY G/Y W/L
[On/Off]Status of key warning lamp (G/Y) detected from key warning signal is received
from BCM via CAN communication.
AFS OFF IND
[On/Off]This item is displayed, but cannot be monitored.
LCD
[B&P N, B&P I, ID NG, ROTAT, SFT
P, INSRT, BATT, NO KY,OUTKY, LK
WN]Displays status of Intelligent Key system warning detected from meter display sig-
nal is received from BCM via CAN communication. Display item [Unit]MAIN
SIGNALSDescription

MWI
COMBINATION METER
MWI-67
< ECU DIAGNOSIS >
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DTC IndexINFOID:0000000003792591
Function Specifications
Speedometer
Reset to zero by suspending communication. Tachometer
Water temperature gauge
Illumination controlWhen suspending communication, changes to nighttime
mode.
Information displayDoor open warning
The display turns off by suspending communication. Trunk open warning
Parking brake release warning
Instantaneous fuel warning  When reception time of an abnormal signal is 2 seconds or
less, the last received datum is used for calculation to indi-
cate the result.
 When reception time of an abnormal signal is more than two
seconds, the last result calculated during normal condition
is indicated. Average fuel consumption
Average vehicle speed
Travel distance
Buzzer The buzzer turns off by suspending communication.
Warning lamp/indicator
lampABS warning lamp
The lamp turns on by suspending communication. VDC OFF indicator lamp
SLIP indicator lamp
Brake warning lamp
High beam indicator lamp
The lamp turns off by suspending communication. Front fog light indicator lamp
Rear fog light indicator lamp
Turn signal indicator lamp
Light indicator lamp
Oil pressure warning lamp
Malfunction indicator lamp
CRUISE indicator lamp
SPORT indicator lamp
Key warning lamp
Display contents of CONSULT-III Diagnostic item is detected when ... Refer to
CAN COMM CIRCUIT
[U1000]When combination meter is not transmitting or receiving CAN communication signal
for 2 seconds or more.MWI-37,
"Diagnosis
Procedure"
CONTROL UNIT (CAN)
[U1010]When detecting error during the initial diagnosis of the CAN controller of combina-
tion meter.MWI-38, "Diagnosis
Procedure"
VEHICLE SPEED
[B2205]The abnormal vehicle speed signal is input from the ABS actuator and electric unit
(control unit) for 2 seconds or more.MWI-39, "Diagnosis
Procedure"
ENGINE SPEED
[B2267]If ECM continuously transmits abnormal engine speed signals for 2 seconds or
more.MWI-40, "Diagnosis
Procedure"
WATER TEMP
[B2268]If ECM continuously transmits abnormal engine coolant temperature signals for 60
seconds or more.MWI-41, "Diagnosis
Procedure"

TM-4
ROAD TEST .....................................................148
Description .............................................................148
Check before Engine Is Started .............................148
Check at Idle ..........................................................149
Cruise Test ............................................................150
CVT POSITION ................................................152
Inspection and Adjustment ....................................152
ON-VEHICLE REPAIR ...............................153
TRANSMISSION CONTROL MODULE ..........153
Exploded View .......................................................153
Removal and Installation .......................................153
Adjustment .............................................................154
CONTROL DEVICE .........................................155
Exploded View .......................................................155
Removal and Installation .......................................155
Inspection and Adjustment ....................................156
CONTROL CABLE ..........................................157
Exploded View .......................................................157
Removal and Installation .......................................157
Inspection and Adjustment ....................................158
OIL PAN ...........................................................159
Exploded View .......................................................159
Removal and Installation .......................................159
Inspection ..............................................................160
SECONDARY SPEED SENSOR .....................161
Exploded View .......................................................161
Removal and Installation .......................................161
Inspection ..............................................................161
DIFFERENTIAL SIDE OIL SEAL ....................162
Exploded View .......................................................162
Removal and Installation .......................................162
Inspection ..............................................................163
AIR BREATHER HOSE ...................................164
Exploded View .......................................................164
Removal and Installation .......................................164
FLUID COOLER SYSTEM ...............................165
Exploded View .......................................................165
Removal and Installation .......................................165
Inspection ..............................................................167
REMOVAL AND INSTALLATION ..............168
TRANSAXLE ASSEMBLY ..............................168
Exploded View .......................................................168
Removal and Installation .......................................168
Inspection ..............................................................170
DISASSEMBLY AND ASSEMBLY ............172
TORQUE CONVERTER ..................................172
Exploded View .......................................................172
Disassembly ..........................................................172
Assembly ..............................................................172
Inspection ..............................................................173
SERVICE DATA AND SPECIFICATIONS
(SDS) .........................................................
174
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
174
General Specification ............................................174
Vehicle Speed When Shifting Gears .....................174
Stall Speed ............................................................174
Line Pressure ........................................................174
Solenoid Valves ....................................................175
CVT Fluid Temperature Sensor ............................175
Primary Speed Sensor ..........................................175
Secondary Speed Sensor .....................................175
Step Motor ............................................................175
Torque Converter ..................................................175
CVT: RE0F10A
BASIC INSPECTION .................................
176
DIAGNOSIS AND REPAIR WORK FLOW .......176
Work Flow .............................................................176
Diagnostic Work Sheet .........................................177
INSPECTION AND ADJUSTMENT ..................179
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ......................................................
179
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Service After Replacing TCM
and Transaxle Assembly .......................................
179
FUNCTION DIAGNOSIS ...........................181
CVT SYSTEM ...................................................181
System Diagram ...................................................181
Component Parts Location ...................................182
MECHANICAL SYSTEM ..................................183
Cross-Sectional View ............................................183
System Diagram ...................................................184
System Description ...............................................184
Component Parts Location ...................................185
Component Description ........................................186
HYDRAULIC CONTROL SYSTEM ..................187
System Diagram ...................................................187
System Description ...............................................187
Component Parts Location ...................................188
Component Description ........................................189
CONTROL SYSTEM .........................................190
System Diagram ...................................................190
System Description ...............................................190
Component Parts Location ...................................192
Component Description ........................................193
LOCK-UP AND SELECT CONTROL SYSTEM
..
194