2007 NISSAN TIIDA Accelerator control system

EC-1270
< SYMPTOM DIAGNOSIS >[K9K]
ENGINE BUCKING
ENGINE BUCKING
DescriptionINFOID:0000000001162715
CHART 9: ENGINE BUCKING
Diagnosis ProcedureINFOID:0000000001162716
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor. Refer to EC-1193, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace.
4.CHECK ASCD CLUTCH SWITCH
Check ASCD clutch switch. Refer to EC-1209, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace.
5.CHECK VEHICLE SPEED SIGNAL
Check the following component.
 “ABS actuator and electric unit (control unit)” [Refer to BRC-25, "
CONSULT-III Function (ABS)" (without
ESP) or BRC-105, "
CONSULT-III Function (ABS)" (with ESP).]
 Combination meter (Refer to MWI-22, "
CONSULT-III Function (METER/M&A)".)
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace.
6.CHECK CAN COMMUNICATION
Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to LAN-33, "
CAN Com-
munication Signal Chart".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connector.
7.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace air intake system.
8.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Check electric throttle control actuator. Refer to EC-1134, "
Diagnosis Procedure".
Is the inspection result normal?

EC-1276
< SYMPTOM DIAGNOSIS >[K9K]
LOSS OF POWER
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace.
10.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor. Refer to EC-1193, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 11.
NO >> Repair or replace.
11 .CHECK ASCD CLUTCH SWITCH
Check ASCD clutch switch. Refer to EC-1209, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair or replace.
12.CHECK VEHICLE SPEED SIGNAL
Check the following component.
 “ABS actuator and electric unit (control unit)” [Refer to BRC-25, "
CONSULT-III Function (ABS)" (without
ESP) or BRC-105, "
CONSULT-III Function (ABS)" (with ESP).]
 Combination meter (Refer to MWI-22, "
CONSULT-III Function (METER/M&A)".)
Is the inspection result normal?
YES >> GO TO 13.
NO >> Repair or replace.
13.CHECK TURBOCHARGER
Check that the turbocharger is working properly. Refer to EC-1195, "
Diagnosis Procedure".
Is the turbocharger correct?
Yes >> GO TO 14.
No >> Repair or replace.
14.CHECK CAN COMMUNICATION
Perform trouble diagnosis on the CAN communication line using CONSULT-III. Refer to LAN-33, "
CAN Com-
munication Signal Chart".
Is the inspection result normal?
YES >> GO TO 15.
NO >> Repair or replace harness or connector.
15.CHECK EGR SYSTEM
Check EGR system. Refer to EC-1202, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 16.
NO >> Repair or replace.
16.CHECK CATALYTIC CONVERTER
Is the catalytic converter clogged or deteriorated?
Is the inspection result normal?
YES >> GO TO 17.
NO >> Repair or replace.
17.CHECK LOW PRESSURE CIRCUIT
Perform the TEST 1: LOW PRESSURE CIRCUIT CHECK. Refer to EC-1043, "
BASIC INSPECTION : Special
Repair Requirement (TEST 1: Low Pressure Fuel Supply System Check)".
>> GO TO 18.
18.CHECK INTERNAL FUEL TRANSFER PUMP

PRECAUTIONS
EC-1295
< PRECAUTION >[K9K]
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When measuring ECM signals with a circuit tester, never allow
the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
Do not use ECM ground terminals when measuring input/out-
put voltage. Doing so may result in damage to the ECM's tran-
sistor. Use a ground other than ECM terminals, such as the
ground.
Do not disassemble fuel pump.
If NG, take proper action.
Do not disassemble fuel injector.
If NG, replace fuel injector.
Do not depress accelerator pedal when staring.
Immediately after staring, do not rev up engine unnecessarily.
Do not rev up engine just prior to shutdown.
When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
-Keep the antenna as far as possible from the electronic con-
trol units.
-Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
-Adjust the antenna and feeder line so that the standingwave
radio can be kept smaller.
-Be sure to ground the radio to vehicle body.
SEF348N
SEF709Y
SEF708Y

A/T CONTROL SYSTEM
TM-21
< FUNCTION DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
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TCM FunctionINFOID:0000000001694422
The function of the TCM is to:
 Receive input signals sent from various switches and sensors.
 Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
 Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transaxle senses vehicle operating conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
SAT381J
SWITCHES & SENSORS
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Turbine revolution sensor (Power
train revolution sensor)
Vehicle speed sensor
Overdrive control switch signal
Stop lamp switch signalShift control
Line pressure control
Lock-up control
Overrun clutch control
Fail-safe control
Self-diagnosis
CONSULT-III communication
line controlShift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
OD OFF indicator lamp

TM-22
< FUNCTION DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
A/T CONTROL SYSTEM
CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000001694423
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-13,
"System Description".
Input/Output Signal of TCMINFOID:0000000001694424
SCIA7112E
Control itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
functionSelf-diag-
nostics
function
InputAccelerator pedal position signal
(*5)XXXXX(*3) XX
Vehicle speed sensor·A/T
(Revolution sensor)XXXX (*3) XX
Vehicle speed sensor·MTR (*1) X (*1) X (*1) X (*1) X X
Closed throttle position signal
(*5)(*2) X (*2) X X (*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*4) X
Turbine revolution sensor (Power
train revolution sensor)XXXXX
Engine speed signal X X
PNP switch XXXXX(*3) X(*4) X
Stop lamp switch signal
(*5)XXX(*4) X
A/T fluid temperature sensors X X X X
Overdrive control switch signal
(*5)XXX(*4) X
TCM power supply voltage signal XX

A/T CONTROL SYSTEM
TM-23
< FUNCTION DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
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P*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnosis are not started, it is judged that there is some kind of error.
*5: Input by CAN communications.
*6: Output by CAN communications.
Line Pressure ControlINFOID:0000000001694425
 TCM has various line pressure control characteristics to match the driving conditions.
 An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.
 Hydraulic pressure on the clutch and brake is electronically controlled through the line pressure solenoid
valve to accommodate engine torque. This results in smooth shift operation.
NORMAL CONTROL
The characteristic of the line pressure to the throttle opening is set
for suitable clutch operation.
BACK-UP CONTROL (ENGINE BRAKE)
If the selector lever is shifted to “2” position while driving in D4 or D3,
great driving force is applied to the clutch inside the transaxle. Clutch
operating pressure (line pressure) must be increased to deal with
this driving force.
DURING SHIFT CHANGE
Out-
putShift solenoid valve A/B X (*3) X X
Line pressure solenoid X (*3) X X
Torque converter clutch solenoid
valveX(*3) XX
Overrun clutch solenoid valve X X (*3) X X
OD OFF indicator lamp
(*6)XX Control itemLine
pressure
controlVeh icl e
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
functionSelf-diag-
nostics
function
SAT003J
SAT004J

TM-24
< FUNCTION DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
A/T CONTROL SYSTEM
The line pressure is temporarily reduced corresponding to a change
in engine torque when shifting gears (that is, when the shift solenoid
valve is switched for clutch operation) to reduce shifting shock.
AT LOW FLUID TEMPERATURE
 A/T fluid viscosity and frictional characteristics of the clutch facing change with A/T fluid temperature. Clutch
engaging or band-contacting pressure is compensated for, according to A/T fluid temperature, to stabilize
shifting quality.
 The line pressure is reduced below 60°C (140°F) to prevent shift-
ing shock due to high viscosity of A/T fluid when temperature is
low.
 Line pressure is increased to a maximum irrespective of the throt-
tle opening when A/T fluid temperature drops to −10°C (14°F). This
pressure rise is adopted to prevent a delay in clutch and brake
operation due to extreme drop of A/T fluid viscosity at low temper-
ature.
Shift ControlINFOID:0000000001694426
The shift is regulated entirely by electronic control to accommodate vehicle speed and varying engine opera-
tions. This is accomplished by electrical signals transmitted by the revolution sensor and the ECM (accelerator
pedal position sensor). This results in improved acceleration performance and fuel economy.
CONTROL OF SHIFT SOLENOID VALVES A AND B
The TCM activates shift solenoid valves A and B according to sig-
nals from the accelerator pedal position sensor and revolution sen-
sor to select the optimum gear position on the basis of the shift
schedule memorized in the TCM.
The shift solenoid valve performs simple ON-OFF operation. When
set to “ON”, the drain circuit closes and pilot pressure is applied to
the shift valve.
RELATION BETWEEN SHIFT SOLENOID VALVES A AND B AND GEAR POSITIONS
SCIA4828E
SCIA4829E
SCIA4830E
SAT008J

TM-30
< FUNCTION DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
A/T CONTROL SYSTEM
Component Parts Location
INFOID:0000000001694446
1. OD OFF indicator lamp 2. Shift position indicator 3. Accelerator pedal position (APP)
4. Turbine revolution sensor (Power
train revolution sensor)5. PNP switch 6. Terminal body (Terminal cord assem-
bly connector)
7. Revolution sensor 8. Dropping resistor 9. TCM (LHD)
10. TCM (RHD) 11. Overdrive control switch
AWDIA0072ZZ