EGR VOLUME CONTROL SYSTEM
EC-1651
[YD (WITHOUT EURO-OBD)]
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EGR VOLUME CONTROL SYSTEMPFP:14710
DescriptionEBS0125M
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line.
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for opti-
mum engine control. The optimum value stored in the ECM is determined by considering various engine con-
ditions.
The EGR volume control valve remains close under the following conditions.
Engine stopped
Engine starting
Low engine coolant temperature
High engine speed
Accelerator pedal fully depressed
COMPONENT DESCRIPTION
EGR Volume Control Valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor Engine speed
EGR volume con-
trolEGR volume control
valve Vehicle speed sensor* Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator pedal position sensor Accelerator pedal position
Mass air flow sensor Amount of intake air
Air conditioner switch
* Air conditioner operation
SEF908Y
SEF411Y
EC-1682
[YD (WITHOUT EURO-OBD)]
FUEL TRANSPORT PUMP
FUEL TRANSPORT PUMPPFP:17020
DescriptionEBS0126G
SYSTEM DESCRIPTION
Fuel supply entrance of fuel tank is at the left side of fuel tank. The duel at the right side of the fuel tank is sent
to the left side of the fuel tank by fuel transport pump.
When the ECM receives engine revolution signal from the crankshaft position sensor, it knows that the engine
is rotating, and causes the pump operate. If the remainder of the fuel at the right side of the fuel tank
decreases, fuel level switch sends a signal to the ECM. When the ECM receives a signal from the fuel level
switch, the ECM stops the operation of the pump.
The ECM does not directly drive the fuel transport pump. It controls the ON/OFF fuel transport pump relay,
which in turn controls the fuel transport pump.
COMPONENT DESCRIPTION
Fuel Transport Pump
Fuel transport pump sends the fuel from right side of fuel tank to left
side.
Fuel Level Switch
Fuel level switch is assembled in sub fuel level sensor unit. When the remainder of the fuel at the right side of
the fuel tank is less than specified value, the switch is turned OFF.
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor Engine speed
Fuel transport pump control Fuel transport pump relay
Fuel level switch Fuel level
Condition Fuel transport pump operation
Engine is running.Operates
Engine is stopped.Sto ps
The remainder of the fuel in the fuel tank is less than specified value. Stops
PBIB1887E
PBIB0469E
SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1701
[YD (WITHOUT EURO-OBD)]
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00100
General SpecificationsEBS0126P
Mass Air Flow SensorEBS0126Q
Engine Coolant Temperature SensorEBS0126R
Fuel Rail Pressure SensorEBS0126S
Glow PlugEBS0126T
EGR Volume Control ValveEBS0126U
Crankshaft Position Sensor EBS0126V
Refer to EC-1517, "Component Inspection" .
Camshaft Position Sensor EBS0126W
Refer to EC-1530, "Component Inspection" .
EngineYD22DDTi
Idle speed725 ± 25 rpm
Maximum engine speed 4,900 rpm
Supply voltageBattery voltage (11 - 14V)
Ignition switch ON (Engine stopped.) Approx. 0.4V
Idle (Engine is warmed up to normal operating temperature.) 1.5 - 2.0V
2,000 rpm (Engine is warmed up to normal operating tempera-
ture.)2.2 - 2.7V
Temperature °C (°F)Resistance kΩ
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Supply voltageApproximately 5V
Idle (Engine is warmed up to normal operating temperature.) 1.7 - 2.0V
2,000 rpm (Engine is warmed up to normal operating tempera-
ture.)2.0 - 2.3V
Resistance [at 25°C (77°F)] Ω Approximately 0.8
Resistance [at 25°C (77°F)] Ω13 - 17
AT-10
PRECAUTIONS
After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE”.
The DTC should not be displayed in the “DTC Confirmation
Procedure” if the repair is completed.
Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
Disassembly should be done in a clean work area.
Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the operation
of the transaxle.
Place disassembled parts in order for easier and proper assembly.
All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.
It is very important to perform functional tests whenever they are indicated.
The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
After overhaul, refill the transaxle with new ATF.
When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
converter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to “Changing A/T Fluid”, AT- 1 6 , "
A/T FLUID" .
Service Notice or PrecautionsECS004Q3
FAIL -SAF E
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of “1”, “2” or “D”. The cus-
tomer may complain of sluggish or poor acceleration.
Always follow the “WORK FLOW”, refer to AT- 2 5 5 , "
Work Flow" (EXCEPT FOR Euro-OBD) or AT- 6 1 , "Work
Flow" (Euro-OBD).
The SELF-DIAGNOSIS results will be as follows:
The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
External leaks in the hub weld area.
Converter hub is scored or damaged.
Converter pilot is broken, damaged or fits poorly into crankshaft.
Steel particles are found after flushing the cooler and cooler lines.
Pump is damaged or steel particles are found in the converter.
Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
Converter is contaminated with engine coolant containing antifreeze.
Internal failure of stator roller clutch.
Heavy clutch debris due to overheating (blue converter).
SAT652J
REMOVAL AND INSTALLATION
AT-413
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REMOVAL AND INSTALLATIONPFP:00000
RemovalECS004NC
COMPONENTS
CAUTION:
Before separating transaxle from engine, remove the crankshaft position sensor (Euro-OBD) from
transaxle. Be careful not to damage sensor.
1. Remove battery and bracket, air cleaner and air duct.
2. Remove air breather hose.
3. Disconnect terminal cord assembly harness connector, PNP switch harness connector and revolution
sensor harness connector.
4. Remove crankshaft position sensor (Euro-OBD) from transaxle.
5. Disconnect control cable from transaxle.
6. Remove front exhaust tube. Refer to EX-2, "
Removal and Installation"
7. Disconnect A/T fluid cooler hoses.
8. Remove drive shafts. Refer to FAX-11, "
FRONT DRIVE SHAFT" , RAX-14, "REAR DRIVE SHAFT" .
9. Remove transfer assembly. Refer to TF-57, "
Removal and Installation" .
10. Remove starter motor from transaxle. Refer to SC-27, "
Removal and Installation" .
11. Support transaxle with a transmission jack.
1. Transfer assembly 2. A/T fluid level gauge 3. A/T fluid charging pipe
4. O-ring 5. Center member 6. Front engine mounting insulator
7. Grommet 8. Fluid cooler tube 9. Fluid cooler tube
10. Copper washer 11. Copper washer 12. Transaxle assembly
13. Stopper 14. LH engine mounting insulator
SCIA6893E
HARNESS
PG-65
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Wiring Diagram Codes (Cell Codes) EKS0032J
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
1STSIG AT A/T 1st Signal
2NDSIG AT A/T 2nd Signal
3RDSIG AT A/T 3rd Signal
4THSIG AT A/T 4th Signal
4WD TF 4WD Control system
A/C ATC Air Conditioner
ABS BRC Anti-Lock Brake System
APP1PW EC Accelerator Pedal Position Sensor 1 Power Supply
APP2PW EC Accelerator Pedal Position Sensor 2 Power Supply
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-Up Lamp
BOOST EC Turbocharger Boost Sensor
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CKPS EC Crankshaft Position Sensor
CLOCK DI Clock
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power Supply for Back-Up
ECMRLY EC ECM Relay
ECTS EC Engine Coolant Temperature Sensor
EGRVLV EC EGR Volume Control Valve
EGVC/V EC EGR Volume Control Valve
ENGSS AT Engine Speed Signal
HARNESS
PG-67
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NATS BL Nissan Anti-Theft System
NAVI AV Navigation System
NONDTC AT Non-Detective Items
OVRCSV AT Overrun Clutch Solenoid Valve
P/SCKT WW Power Socket
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE)
PHONE AV Telephone (Pre-wire)
PNP/SW AT Park/Neutral Position Switch
PNP/SW EC Park/Neutral Position Switch
PNPSW1 EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER PG Power Supply Routing
PRGVLV EC EVAP Canister Purge Volume Control Solenoid Valve
PRWIRE BL Theft Warning System (Pre-wire)
PS/SEN EC Power Steering Pressure Sensor
PST/SW EC Power Steering Oil Pressure Switch
R/FOG LT Rear Fog Lamp
ROOM/L LT Interior Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
RRO2 EC Rear Heated Oxygen Sensor
RRO2/H EC Rear Heated Oxygen Sensor Heater
S/LOCK BL Power Door Lock - Super Lock
S/SIG EC Start Signal
S/WARN SB Seat Belt Warning System
SEAT SE Power Seat
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
SSV/A AT Shift Solenoid Valve A
SSV/B AT Shift Solenoid Valve B
START SC Starting System
STEP/L LT Step Lamp
STOP/L LT Stop Lamp
TAIL/L LT Parking, License and Tail Lamps
TCC/V EC Turbocharger Boost Control Solenoid Valve
TCCSV EC Turbocharger Boost Control Solenoid Valve
TCV AT Torque Converter Clutch Solenoid Valve
TPS AT Throttle Position Sensor
TPS1 EC Throttle Position Sensor (Sensor 1)
TPS2 EC Throttle Position Sensor (Sensor 2)
TPS3 EC Throttle Position Sensor
TURN LT Turn Signal and Hazard Warning LampCode Section Wiring Diagram Name
IDX-3
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IDX
ALPHABETICAL INDEX
EC-1641
Basic inspection .. EC-79, EC-578, EC-1012, EC-1382
Battery ................................................................. SC-4
Baulk ring (M/T) .................................... MT-23, MT-41
Blower motor .... ATC-82, ATC-87, ATC-127, MTC-15,
MTC-18
, MTC-24
Blower resistor ................................................ MTC-25
Blower unit ....................... ATC-125, MTC-22, MTC-24
BOOST - Wiring diagram ............... EC-1153, EC-1508
Boring/horning cylinder block(QR20DE-QR25DE) .......
EM-111
Brake booster .................................................... BR-23
Brake fluid change ............................................... BR-8
Brake fluid level ................................................. MA-44
Brake fluid level and line check ........................... BR-8
Brake hydraulic line ........................................... BR-10
Brake inspection ................................................ MA-44
Brake lines and cables inspection ..................... MA-44
Brake master cylinder ........................................ BR-14
Brake pedal ......................................................... BR-6
Brake switch ..... EC-405, EC-809, EC-1313, EC-1664
BRK/SW - Wiring diagram EC-406, EC-811, EC-1314,
EC-1665
Bulb specifications ............................................ LT-152
Bumper, front ....................................................... EI-14
Bumper, rear ........................................................ EI-17
C
Camshaft inspection(QR20DE-QR25DE) .......... EM-58
Camshaft inspection(YD22DDTi) .................... EM-181
Camshaft position sensor (CMPS) EC-1169, EC-1175,
EC-1525
, EC-1531
Camshaft position sensor (PHASE) .. EC-257, EC-701
Camshaft(QR20DE-QR25DE) ........................... EM-56
Camshaft(YD22DDTi) ...................................... EM-180
CAN - Wiring diagram ....... EC-134, EC-634, EC-1057,
EC-1426
, LAN-12, LAN-28, LAN-44, LAN-69, LAN-87,
LAN-105
, LAN-131, LAN-144, LAN-157
CAN (Controller Area Network) ........ LAN-11, LAN-27,
LAN-43
, LAN-68, LAN-86, LAN-104, LAN-130,
LAN-143
, LAN-156
CAN communication EC-39, EC-133, EC-552, EC-633,
EC-989
, EC-1056, EC-1365, EC-1425, AT-32, AT-97,
AT-329
, TF-45, LAN-11, LAN-27, LAN-43, LAN-68,
LAN-86
, LAN-104, LAN-130, LAN-143, LAN-156
Canister-See EVAP canister ............. EC-525, EC-965
CHARGE - Wiring diagram .................... SC-14, SC-15
Charging system ................................................ SC-13
Chassis and body maintenance ........................ MA-39
CHIME - Wiring diagram ................ DI-54, DI-57, DI-58
CIGAR - Wiring diagram .................................. WW-29
Cigarette lighter ............................................... WW-29
Circuit breaker ................................................... PG-12
CKPS - Wiring diagram EC-1059, EC-1158, EC-1164,
EC-1428
, EC-1513, EC-1520
Clearance lamp ................................................ LT-116
Clock ................................................................... DI-63
CLOCK - Wiring diagram .................................... DI-63
Closed loop control .............................. EC-36, EC-549
Clutch cover ....................................................... CL-16
Clutch disc ......................................................... CL-16
Clutch master cylinder ......................................... CL-9
Clutch operating cylinder ................................... CL-12
Clutch pedal ......................................................... CL-5
Clutch release bearing ....................................... CL-14
Clutch release mechanism ................................ CL-14
Clutch withdrawal lever ...................................... CL-14
CMPS - Wiring diagram EC-1059, EC-1170, EC-1176,
EC-1428
, EC-1526, EC-1532
Coil spring (rear) ............................................... RSU-8
Collision diagnosis .......................................... SRS-48
Combination meter ............................................... DI-4
Combination switch ............................................. LT-96
Component Location (auto A/C) ......... ATC-35, MTC-4
Compression pressure(QR20DE-QR25DE) ..... EM-70
Compression pressure(YD22DDTi) ................ EM-209
Compressor clutch removal and installation .. ATC-146
Compressor special service tool ...................... ATC-14
Condenser ..................................................... ATC-155
Connecting rod bearing clearance(QR20DE-QR25DE)
EM-109
Connecting rod bearing clearance(YD22DDTi) EM-252
Connecting rod bushing clearance(YD22DDTi) EM-246
Connecting rod(QR20DE-QR25DE) ............... EM-109
Connecting rod(YD22DDTi) .............. EM-242, EM-248
CONSULT for engine ......................... EC-103, EC-604
CONSULT-II for engine ................. EC-1034, EC-1405
Control lever (M/T) ............................................. MT-16
Control unit ..................................... ATC-120, MTC-21
Control units (terminal arrangement) ................. PG-76
Controller Area Network (CAN) ........ LAN-11, LAN-27,
LAN-43
, LAN-68, LAN-86, LAN-104, LAN-130,
LAN-143
, LAN-156
Converter housing installation ......................... AT-523
COOL/F - Wiring diagram EC-356, EC-759, EC-1127,
EC-1483
Coolant replacement(QR20DE-QR25DE) ........ MA-20
Coolant replacement(YD22DDTi) ..................... MA-30
Cooling circuit (engine)(QR20DE-QR25DE) ....... CO-7
Cooling circuit (engine)(YD22DDTi) ................. CO-30
Cooling fan ............................................ CO-19, CO-37
Cooling fan relay EC-367, EC-770, EC-1137, EC-1492
Coupling sleeve (M/T) ........................... MT-23, MT-41
Cowl top .............................................................. EI-20
Cowl top cover .................................................... EI-20
Crankcase ventilation system .......... EC-989, EC-1365
Crankcase ventilation system - See Positive crankcase
ventilation ........................................... EC-527
, EC-967
Crankshaft position sensor (POS) ..... EC-250, EC-693
Crankshaft position sensor (TDC) EC-1157, EC-1163,
EC-1512
, EC-1518
Crankshaft(QR20DE-QR25DE) ........................ EM-90
Cylinder block boring(QR20DE-QR25DE) ...... EM-112
Cylinder block boring(YD22DDTi) ................... EM-250
Cylinder block(QR20DE-QR25DE) ................... EM-89
Cylinder block(YD22DDTi) .............................. EM-230
Cylinder head bolt tightening(QR20DE-QR25DE) ........