NISSAN TIIDA 2007 Service Repair Manual

EC-62
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
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)
 Brake pedal is depressed
 Clutch pedal is depressed or gear position is changed to neutral position (M/T models).
 Selector lever is changed to N, P, R position (A/T models).
 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 (M/T models)
 Selector lever is in other than P and N positions (A/T models)
 Vehicle speed is greater than 40 km/h (25 MPH) and less than 153km/h (95 MPH)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-63
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Component Parts LocationINFOID:0000000001677955
1. Ignition coil (with power transistor)
and spark plug2. Intake valve timing control solenoid
valve3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector 6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air
temperature sensor)11. Engine coolant temperature sensor 12. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
13. EVAP canister purge volume control
solenoid valve
PBIB2939E

EC-64
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
1. Mass air flow sensor
(with intake air temperature sensor)2. Engine coolant temperature sensor 3. Electric throttle control actuator
4. Camshaft position sensor (PHASE) 5. Ignition coil (with power transistor) 6. Fuel injector
7. EVAP canister purge volume control
solenoid valve
Vehicle front
PBIB2940E

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-65
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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1. ECM harness connectors 2. ECM 3. IPDM E/R
4. Fuel pump fuse (15A) 5. Intake valve timing control solenoid
valve6. Knock sensor
7. Refrigerant pressure sensor 8. PCV valve
Vehicle front
PBIB2941E

EC-66
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
1. Exhaust manifold 2. Heated oxygen sensor 1 3. Heated oxygen sensor 2
4. Heated oxygen sensor 2 harness
connector
Vehicle front
PBIB2942E
PBIB2943E

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-67
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1. Cooling fan motor harness connec-
tor2. Crankshaft position sensor 3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector6. Accelerator pedal position sensor
7. Accelerator pedal 8. Fuel level sensor unit and fuel pump
harness connector (view with in-
spection hole cover removed)9. Fuel pressure regulator
10. Fuel pump
AWBIA0044ZZ

EC-68
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Component Description
INFOID:0000000001161157
1. ASCD steering switch 2. MAIN switch 3. CANCEL switch
4. SET/COAST switch 5. RESUME/ACCELERATE switch 6. ASCD brake switch
7. Stop lamp switch 8. ASCD clutch switch 9. Clutch pedal
ALBIA0273ZZ
Component Reference
ASCD steering switchEC-267, "
Description"
ASCD clutch switchEC-270, "Description"
ASCD brake switchEC-270, "Description"
ASCD indicatorEC-306, "Description"
Stop lamp switchEC-283, "Description"
Electric throttle control actuatorEC-222, "Description"

CAN COMMUNICATION
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CAN COMMUNICATION
System DescriptionINFOID:0000000001161158
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.
Refer to LAN-33, "
CAN Communication Signal Chart", about CAN communication for detail.

EC-70
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
COOLING FAN CONTROL
COOLING FAN CONTROL
System DiagramINFOID:0000000001161159
System DescriptionINFOID:0000000001161160
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
JMBIA0177GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
Cooling fan
controlIPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor Battery
Battery voltage*
1
Combination meter
Vehicle speed*2
Engine coolant temperature sensor Engine coolant temperature
BCM
Air conditioner ON signal*
2
Refrigerant pressure sensor Refrigerant pressure

COOLING FAN CONTROL
EC-71
< FUNCTION DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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Models with A/C
Models without A/C
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
MBIB1451E
JMBIA0821GB
Cooling fan speedCooling fan relay
123
Stop (OFF) OFF OFF OFF
Low (LOW) ON OFF OFF
High (HI) OFF ON ON