2007 NISSAN TIIDA Brake System BR

DIAGNOSIS SYSTEM (ECM)
EC-467
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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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.
I/P PULLY SPD rpm Indicates the engine speed computed from the
turbine revolution sensor signal.
VEHICLE SPEED km/h or mph Indicates the vehicle speed computed from the
vehicle speed signal sent from TCM is displayed.
IDL A/V LEARN YET/CMPLT Display 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.
TRVL AFTER MIL km or mile  Distance traveled while MI is activated.
O2 SEN HTR DTY % Heated oxygen 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.
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 or ASCD clutch switch signal.
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 the [ON/OFF] condition of A/T O/D ac-
cording to the input signal from the TCM.
AT OD CANCEL ON/OFF Indicates the [ON/OFF] condition of A/T O/D can-
cel to the input signal from the TCM.
CRUISE LAMP ON/OFF Indicates [ON/OFF] condition of CRUISE lamp
determined by the ECM according to the input
signals.
SET LAMP ON/OFF Indicates [ON/OFF] condition of SET lamp deter-
mined by the ECM according to the input signals. Monitored item Unit Description Remarks

EC-556
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
P1572 ASCD BRAKE SWITCH
DescriptionINFOID:0000000001693379
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-424, "
System Diagram" for the ASCD function.
DTC LogicINFOID:0000000001693380
DTC DETECTION LOGIC
NOTE:
If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-524, "
DTC Logic".
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Do you have CONSULT-III?.
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for mal-
function B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-I
With CONSULT-III
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-III.
3. Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter.
4. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
CAUTION:
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1572 ASCD brake switchA)When the vehicle speed is above 30 km/h
(19 MPH), ON signals from the stop lamp
switch and the ASCD brake switch are sent
to the ECM at the same time. Harness or connectors
(The stop lamp switch circuit is shorted.)
 Harness or connectors
(The ASCD brake switch circuit is shorted.)
 Harness or connectors
(The ASCD clutch switch circuit is shorted.)
(M/T)
 Stop lamp switch
 ASCD brake switch
 ASCD clutch switch (M/T)
 Incorrect stop lamp switch installation
 Incorrect ASCD brake switch installation
 Incorrect ASCD clutch switch installation (M/T)
ECM B)ASCD brake switch signal is not sent to
ECM for extremely long time while the ve-
hicle is driving.

EC-588
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ASCD BRAKE SWITCH
ASCD BRAKE SWITCH
DescriptionINFOID:0000000001693416
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-424, "
System Description" for the ASCD function.
Component Function CheckINFOID:0000000001693417
1.CHECK FOR ASCD BRAKE SWITCH FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Go to EC-588, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693418
1.CHECK OVERALL FUNCTION-I
Check which type of transmission the vehicle is equipped with.
Is the inspection result normal?
A/T >> GO TO 2.
M/T >> GO TO 6.
2.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ASCD brake switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Monitor item Condition Indication
BRAKE SW1Brake pedal and/or clutch pedal Slightly depressed OFF
Brake pedal and clutch pedal Fully released ON
ECM
Ground Condition Voltage
Connector Terminal
E16100
(ASCD brake switch signal)GroundBrake pedal and/or clutch pedal Slightly depressed Approx. 0V
Brake pedal and clutch pedal Fully released Battery voltage
ASCD brake switch
Ground Voltage
Connector Terminal
E36 (LHD models)
M205 (RHD models)1 Ground Battery voltage

ENGINE CONTROL SYSTEM
EC-703
< FUNCTION DIAGNOSIS >[MR18DE]
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Component DescriptionINFOID:0000000001161722
1. ASCD steering switch 2. MAIN switch 3. CANCEL switch
4. SET/COAST switch 5. RESUME/ACCELEATE switch 6. Stop lamp switch
7. ASCD brake switch 8. ASCD clutch switch 9. Cluch pedal
ALBIA0273ZZ
Component Reference
Accelerator pedal position sensorEC-948, "
Description"
ASCD brake switchEC-933, "Description"
ASCD steering switchEC-930, "Description"
ASCD vehicle speed sensorEC-940, "Description"
Camshaft position sensor (PHASE)EC-866, "Description"
Crankshaft position sensor (POS)EC-862, "Description"
Cooling fan motorEC-737, "System Diagram"
Electric throttle control actuatorEC-885, "Description"
Engine coolant temperature sensorEC-807, "Description"
EVAP canister purge volume control solenoid valveEC-875, "Description"
Fuel injectorEC-975, "Description"
Fuel pumpEC-978, "Description"
Heated oxygen sensor 1EC-813, "Description"
Heated oxygen sensor 1 heaterEC-828, "Description"
Heated oxygen sensor 2EC-831, "Description"
Heated oxygen sensor 2 heaterEC-841, "Description"
Ignition signalEC-981, "Description"
Intake air temperature sensorEC-804, "Description"

MULTIPORT FUEL INJECTION SYSTEM
EC-713
< FUNCTION DIAGNOSIS >[MR18DE]
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Component DescriptionINFOID:0000000001161726
1. ASCD steering switch 2. MAIN switch 3. CANCEL switch
4. SET/COAST switch 5. RESUME/ACCELEATE switch 6. Stop lamp switch
7. ASCD brake switch 8. ASCD clutch switch 9. Cluch pedal
ALBIA0273ZZ
Component Reference
Accelerator pedal position sensorEC-959, "
Description"
Camshaft position sensor (PHASE)EC-866, "Description"
Crankshaft position sensor (POS)EC-862, "Description"
Engine coolant temperature sensorEC-807, "Description"
Fuel injectorEC-975, "Description"
Heated oxygen sensor 1EC-813, "Description"
Heated oxygen sensor 2EC-831, "Description"
Intake air temperature sensorEC-804, "Description"
Knock sensorEC-860, "Description"
Mass air flow sensorEC-799, "Description"
Park/neutral position (PNP) switchEC-942, "Description"
Throttle position sensorEC-810, "Description"
Vehicle speed sensorEC-878, "Description"

EC-720
< FUNCTION DIAGNOSIS >[MR18DE]
ELECTRIC IGNITION SYSTEM
Component Description
INFOID:0000000001161730
1. ASCD steering switch 2. MAIN switch 3. CANCEL switch
4. SET/COAST switch 5. RESUME/ACCELEATE switch 6. Stop lamp switch
7. ASCD brake switch 8. ASCD clutch switch 9. Cluch pedal
ALBIA0273ZZ
Component Reference
Accelerator pedal position sensorEC-959, "
Description"
Camshaft position sensor (PHASE)EC-866, "Description"
Crankshaft position sensor (POS)EC-862, "Description"
Engine coolant temperature sensorEC-807, "Description"
Ignition signalEC-981, "Description"
Knock sensorEC-860, "Description"
Mass air flow sensorEC-799, "Description"
Park/neutral position (PNP) switchEC-942, "Description"
Throttle position sensorEC-810, "Description"
Vehicle speed sensorEC-878, "Description"

EC-728
< FUNCTION DIAGNOSIS >[MR18DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DiagramINFOID:0000000001161735
System DescriptionINFOID:0000000001161736
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 ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in 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 180 km/h (112
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 keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
JMBIA0411GB
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch
Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Sto p l am p s w it ch
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/neutral position (PNP) switch Gear position
Combination meter* Vehicle speed

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-729
< FUNCTION DIAGNOSIS >[MR18DE]
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 CANCEL switch is pressed
 More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
 Brake pedal is depressed
 Clutch pedal is depressed or gear position is changed to neutral position.
 Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
 TCS system is operated
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 during 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 keep 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
 Clutch pedal is released
 Vehicle speed is greater than 40 km/h (25 MPH) and less than 180 km/h (112 MPH)