TCM FUNCTION=NCAT0014S03The function of the TCM is to:
IReceive input signals sent from various switches and sensors.
IDetermine required line pressure, shifting point and lock-up operation.
ISend required output signals to the step motor and the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCMNCAT0014S04
Sensors and actuators Function
InputPNP switch Detects select lever position and sends a signal to TCM.
Throttle position sensor Detects throttle valve position and sends a signal to TCM.
Closed throttle position switch Detects throttle valve's fully-closed position and sends a signal to TCM.
Wide open throttle position switchDetects a throttle valve position of greater than 1/2 of full throttle and
sends a signal to TCM.
Engine speed signal From ECM.
CVT fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
CVT fluid pressure sensor Detects transmission fluid pressure and sends a signal to TCM.
Primary speed sensor Detects primary pulley rpm and sends a signal to TCM.
Secondary speed sensor Detects secondary pulley rpm and sends a signal to TCM.
Stop lamp switchSends a signal to the TCM relaying the operation condition of the brake
pedal.
Sport mode switchSends a signal to the TCM relaying the operation condition of the sport
mode switch.
Indicator control unit*1Sends a signal to the TCM operation condition of the manual mode switch
in control device.
ABS control unit Sends a signal to the TCM operation condition of the ABS.
OutputStep motor Regulates pulley position in relation to a signal sent from TCM.
Line pressure solenoid valveRegulates (or decreases) line pressure suited to driving conditions in rela-
tion to a signal sent from TCM.
Torque converter clutch solenoid
valveRegulates (or decreases) lock-up pressure suited to driving conditions in
relation to a signal sent from TCM.
CVT indicator (warning) lamp*2 Shows TCM faults, when CVT control components malfunction.
SPORT indicator lamp*3 Shows the operation condition of the SPORT mode switch. *3
Indicator control unit *1Receives the information of gear position on manual mode from TCM, and
sends a signal to indicator.
*1: Hyper CVT M6 models only
*2: Hyper CVT M6 models
*3: Hyper CVT models
OVERALL SYSTEM
Control System (Cont'd)
AT-14
Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NCEC0002The Supplemental Restraint System ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº, used along with a seat
belt, help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The
Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and
on the instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable.
In addition to the supplemental air bag modules for a frontal collision, the supplemental side air bag used along
with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side col-
lision. The supplemental side air bag consists of air bag modules (located in the outer side of front seats),
satellite sensor, diagnosis sensor unit (one of components of supplemental air bags for a frontal collision),
wiring harness, warning lamp (one of components of supplemental air bags for a frontal collision). Information
necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
ITo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN dealer.
IImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses (except ªSEAT BELT PRE-TENSIONERº connector) can be
identified with yellow harness connector (and with yellow harness protector or yellow insulation
tape before the harness connectors).
Precautions for On Board Diagnostic (OBD)
System of Engine and CVT
NCEC0003The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver
of a malfunction causing emission deterioration.
CAUTION:
IBe sure to turn the ignition switch ªOFFº and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MI to light up.
IBe sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
ICertain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector.
For description and how to disconnect, refer to EL section, ªDescriptionº, ªHARNESS CONNEC-
TORº.
IBe sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MI to light up due to the short circuit.
IBe sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.
IBe sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission Control Module) before returning the vehicle to the customer.
PRECAUTIONSSR20DE
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
EC-10
IThe time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time required, for the diagnosis under normal conditions*, is the
shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not
completed within zone A.
*: Normal conditions refer to the following:
þ Sea level
þ Flat road
þ Ambient air temperature: 20 - 30ÉC (68 - 86ÉF)
þ Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30ÉC (68 - 86ÉF)], diagnosis may
also be performed.
Pattern 1:
IThe engine is started at the engine coolant temperature of þ10 to 35ÉC (14 to 95ÉF) (where the volt-
age between the ECM terminals 70 and 58 is 3.0 - 4.3V).
IThe engine must be operated at idle speed until the engine coolant temperature is greater than 70ÉC
(158ÉF) (where the voltage between the ECM terminals 70 and 58 is lower than 1.4V).
Pattern 2:
IWhen steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with CONSULT-II or GST is advised.
Suggested transmission gear position for CVT models
Set the selector lever in the ªDº position with ªSPORTS MODE SWº ªOFFº or without ªMANUAL MODEº.
Suggested upshift speeds for M/T models
Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel
economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather
and individual driving habits.
Gear changeACCEL shift point
km/h (MPH)
1st to 2nd 15 (9)
2nd to 3rd 35 (22)
3rd to 4th 50 (31)
4th to 5th 70 (43)
TEST VALUE AND TEST LIMIT (GST ONLY Ð NOT APPLICABLE TO CONSULT-II)NCEC0031S04The following is the information specified in Mode 6 of ISO 15031-5.
The test value is a parameter used to determine whether a system/circuit diagnostic test is ªOKº or ªNGº while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
Items for which these data (test value and test limit) are displayed are the same as SRT code items (6 test
items).
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
X: Applicable Ð: Not applicable
SRT item Self-diagnostic test itemTest value (GST display)
Test limit Application
TID CID
CATALYST Three way catalyst function01H 01H Max. X
02H 81H Min. X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONSR20DE
Emission-related Diagnostic Information (Cont'd)
EC-53
Regarding the procedures of NATS initialisation and NATS igni-
tion key ID registration, refer to CONSULT-II operation manual
for NATS.
Therefore, CONSULT-II NATS software (program card and
operation manual) must be kept strictly confidential to main-
tain the integrity of the anti-theft function.
lWhen servicing NATS (trouble diagnoses, system initialisa-
tion and additional registration of other NATS ignition key
IDs), it may be necessary to re-register original key identifi-
cation. Therefore, be sure to obtain all keys from vehicle
owner.
A maximum of four key IDs can be registered into NATS.
Precautions for Super Lock System
Locking the driver's door or front passenger's door with the key
or remote control will lock all doors and activate the Super Lock
System.
The Super Lock System is designed to prevent theft as it can
only be released when a front door is unlocked using a key or
remote control.
This means, none of the door locks can be operated from the
inside using the door lock knob when the Super Lock System is
activated.
General Precautions
lDo not operate the engine for an extended period of time
without proper exhaust ventilation.
Keep the work area well ventilated and free of any flammable
materials. Special care should be taken when handling any
flammable or poisonous materials, such as gasoline, refrig-
erant gas, etc. When working in a pit or other enclosed area,
be sure to properly ventilate the area before working with
hazardous materials.
Do not smoke while working on the vehicle.
lBefore jacking up the vehicle, apply wheel chocks or other
tire blocks to the wheels to prevent the vehicle from moving.
After jacking up the vehicle, support the vehicle weight with
safety stands at the points designated for proper lifting before
working on the vehicle.
These operations should be done on a level surface.
lWhen removing a heavy component such as the engine or
transaxle/transmission, be careful not to lose your balance
and drop them. Also, do not allow them to strike adjacent
parts, especially the brake tubes and master cylinder.
SGI285
SGI231
PRECAUTIONS
Precautions for NATS (Cont'd)
GI-4
lALPHABETICAL INDEXis provided at the end of this manual so that you can rapidly find the item and
page you are searching for.
lA QUICK REFERENCE INDEX,a black tab (e.g.) is provided on the first page. You can quickly
find the first page of each section by mating it to the section's black tab.
lTHE CONTENTSare listed on the first page of each section.
lTHE TITLEis indicated on the upper portion of each page and shows the part or system.
lTHE PAGE NUMBERof each section consists of two letters which designate the particular section and
a number (e.g. ªBR-5º).
lTHE LARGE ILLUSTRATIONSare exploded views (See below) and contain tightening torques, lubri-
cation points, section number of thePARTS CATALOG (MICROFICHE)or(EURO)FASTsystem (E.g.
SEC440) and other information necessary to perform repairs.
The illustrations should be used in reference to service matters only. When ordering parts, refer to the
appropriatePARTS CATALOG.
lTHE SMALL ILLUSTRATIONSshow the important steps such as inspection, use of special tools, knacks
of work and hidden or tricky steps which are not shown in the previous large illustrations.
Assembly, inspection and adjustment procedures for the complicated units such as the automatic tran-
saxle or transmission, etc. are presented in a step-by-step format where necessary.
SBR364AC
ªExampleº
SEC. 440
Pad retainer
(Upper side)
Torque
member
Pad retainer
(Lower side)
Outer shim
Pad
Dust seal
54 - 64 (5.5 - 6.5, 40 - 47)
Pin bootMain pin
to sliding portion
Inner shim
Copper washer
17-20
(1.7 - 2.0, 12 - 14)
Brake hose
Air bleeder
7 - 9 (0.7 - 0.9, 62 - 80)
Pin bolt
22 - 31 (2.2 - 3.2, 16 - 23)
Cylinder body
Piston seal
PistonN´m (kg-m, ft-lb)
N´m (kg-m, in-lb)
HOW TO USE THIS MANUAL
GI-9
lThe followingSYMBOLS AND ABBREVIATIONSare used:
,: Tightening torque
: Should be lubricated with grease.
Unless otherwise indicated, use
recommended multi-purpose
grease.
: Should be lubricated with oil.
: Sealing point
: Checking point
: Always replace after every disas-
sembly.
pP: Apply petroleum jelly.
: Apply ATF.
H: Select with proper thickness.
I: Adjustment is required.
SDS : Service Data and Specifications
LH, RH : Left-Hand, Right-Hand
LHD, RHD : Left-Hand Drive, Right-Hand Drive
FR, RR : Front, RearM/T : Manual Transaxle/Transmission
A/T : Automatic Transaxle/Transmission
A/C : Air Conditioner
P/S : Power Steering
SST : Special Service Tools
SAE : Society of Automotive Engineers,
Inc.
SMJ : Super Multiple Junction
ATF : Automatic Transmission Fluid
D
1: Drive range 1st gear
D
2: Drive range 2nd gear
D
3: Drive range 3rd gear
D
4: Drive range 4th gear
OD : Overdrive
2
2: 2nd range 2nd gear
2
1: 2nd range 1st gear
1
2: 1st range 2nd gear
1
1: 1st range 1st gear
lTheUNITSgiven in this manual are primarily expressed as an SI UNIT (International System of Unit),
and alternatively expressed in the metric system and in the yard/pound system.
ªExampleº
Tightening torque:
59 - 78 N´m (6.0 - 8.0 kg-m, 43 - 58 ft-lb)
lTROUBLE DIAGNOSESare included in sections dealing with complicated components and systems.
lSERVICE DATA AND SPECIFICATIONSare contained at the end of each section for quick reference
of data.
lThe captionsWARNINGandCAUTIONwarn you of steps that must be followed to prevent personal
injury and/or damage to some part of the vehicle.
WARNINGindicates the possibility of personal injury if instructions are not followed.
CAUTIONindicates the possibility of component damage if instructions are not followed.
BOLD TYPED STATEMENTSexceptWARNINGandCAUTIONgive you helpful information.
HOW TO USE THIS MANUAL
GI-10
Wiring Diagram Codes (Cell Codes)
Use the chart below to find out what each wiring diagram code
stands for.
Code Section Wiring Diagram Name
AAC/V EC IACV-AAC Valve
ABS BR Anti-lock Brake System
ACL/SW EC Accelerator Position Switch
ADJRES EC Adjustment Resistor
A/C HA Manual Air Conditioner
A/CCUT EC Air Conditioner Cut Control
ACC/SW EC Accelerator Switch (FC)
A/T AT Automatic Transmission
AIM EL Headlamp Aiming Control
APS EC Accelerator Position Sensor
AIRREG EC IACV-Air Regulator
AT/C EC A/T Control
AUDIO EL Audio
BACK/L EL Back-up Lamp
BUZZER EL Warning Buzzer
CHARGE EL Charging System
CKPS EC Crankshaft Position Sensor
CHIME EL Warning Chime
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
CSPS EC Control Sleeve Position Sensor
DTRL ELHeadlamp Ð With Daytime Light
System
DEF EL Rear Window Defogger
D/LOCK EL Power Door Lock
DTRL ELHeadlamp Ð With Daytime Light
System
ECTS ECEngine Coolant Temperature
Sensor
EGRC/V ECEGR and canister Control Solenoid
Valve
FCUT EC Fuel Cut Solenoid Valve
F/FOG EL Front Fog Lamp
FICD EC IACV-FICD Solenoid Valve
F/PUMP EC Fuel Pump
FTS EC Fuel Temperature Sensor
GLOW EC Quick-glow system
GOVNR EC Electric Governor
H/LAMP ELHeadlamp Ð Without Daytime
Light System
H/SEAT EL Heated Seat
HEAT HA Heater
HLC EL Headlamp Washer
HO2S EC Heated Oxygen Sensor
HORN EL Horn, Cigarette Lighter, Clock
IATS EC Intake Air Temperature Sensor
IGN/SG EC Ignition SignalCode Section Wiring Diagram Name
ILL EL Illumination
INJECT EC Injector
INT/L ELInterior, Spot and Trunk Room
Lamps
KS EC Knock Sensor
LOAD EC Load Signal
LKUP ECTorque Converter Clutch Solenoid
Valve
LOAD EC Load Signal
MAFS EC Mass Air Flow Sensor
MAIN ECMain Power Supply and Ground
Circuit
METER ELSpeedometer, Tachometer, Temp.
and Fuel Gauges
MI EC Malfunction Indicator
MIRROR EL Door Mirror
NATS EL Nissan Anti-Theft System
NLS EC Needle Lift Sensor
O2S EC Oxygen Sensor
PGC/V ECEVAP Canister Purge Control
Solenoid Valve
PLA EC Partial Load Advance Control
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW ECPower Steering Oil Pressure
Switch
R/FOG EL Rear Fog Lamp
SROOF EL Sun Roof
SRS RS Supplemental Restraint System
S/LOCK EL Power Door Lock Ð Super Lock
S/SIG EC Start Signal
START EL Starting System
STOP/L EL Stop Lamp
TAIL/L ELClearance, License, and Tail
Lamps
TCV EC Injection Timing Control Valve
TPS EC Throttle Position Sensor
TURN ELTurn Signal and Hazard Warning
Lamps
VSS EC Vehicle Speed Sensor
VTC EC VTC Solenoid Valve
WARN EL Warning Lamps
WINDOW EL Power Window
WIPER EL Front Wiper and Washer
WIP/R EL Rear Wiper and Washer
HOW TO READ WIRING DIAGRAMS
GI-20
Work Flow
STEP DESCRIPTION
STEP 1 Get detailed information about the conditions and the environment when the incident occurred.
The following are key pieces of information required to make a good analysis:
WHATVehicle Model, Engine, Transmission and the System (i.e. Radio).
WHENDate, Time of Day, Weather Conditions, Frequency.
WHERERoad Conditions, Altitude and Traffic Situation.
HOWSystem Symptoms, Operating Conditions (Other Components Interaction).
Service History and if any After Market Accessories have been installed.
STEP 2 Operate the system, road test if necessary.
Verify the parameter of the incident.
If the problem can not be duplicated, refer to ªIncident Simulation Testsº next page.
STEP 3 Get the proper diagnosis materials together including:
POWER SUPPLY ROUTING
System Operation Descriptions
Applicable Service Manual Sections
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer com-
ments.
STEP 4 Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Har-
ness Layouts.
STEP 5 Repair or replace the incident circuit or component.
STEP 6 Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not
inadvertently created a new incident during your diagnosis or repair steps.
SGI838 START
LISTEN TO CUSTOMER COMPLAINTS
VERIFY THE SYMPTOM
SYMPTOM SIMULATION
NARROW THE POSSIBLE CAUSE
INSPECT THE CIRCUIT
REPAIR THE CIRCUIT
MAKE SURE THE CIRCUIT WORKS
ENDSTEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT
GI-24