engine NISSAN TIIDA 2007 Service Repair Manual

ENGINE TORQUE CONTROL
EC-1087
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ENGINE TORQUE CONTROL
System DescriptionINFOID:0000000001162540
The torque structure is the system which translates the driver's request into a torque supplied by the engine. It
is required for certain functions such as the electronic stability program (ESP), the automatic gearbox or the
sequentialgearbox if fitted).
Each inter-system (ESP, automatic gearbox, sequential gearbox) sends the ECM a torque request viathe CAN
communication. The computer arbitrates between the inter-system torque requests and the driver's request
(comprised of the accelerator pedal or the cruise control/speed limiter function). The result of the arbitration
gives thetorque setpoint.
From this torque setpoint, the computer determines the quantity of fuel to be injected (injection duration and
numberof injections) and the amount of air required (turbocharging pressure and EGR rate) so that the engine
is able toprovide the torque required in the best possible conditions (in terms of smooth running performance,
pollutantemissions, etc.).
Component Parts LocationINFOID:0000000001611148
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EC-1088
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ENGINE TORQUE CONTROL
1. Priming pump 2. Fuel pump 3. Glow plug
4. Fuel rail 5. Turbocharger boost control solenoid
valve6. Turbocharger boost sensor
7. Engine coolant temperature sensor 8. Crankshaft position sensor 9. Glow relay
10. ECM 11. Mass air flow sensor 12. Electric throttle control actuator
13. Camshaft position sensor 14. EGR volume control valve 15. Fuel injector
1. Turbocharger boost sensor 2. Mass air flow sensor 3. EGR volume control valve
4. ECM 5. Battery 6. Engine coolant temperature sensor
7. Camshaft position sensor 8. Fuel injector 9. Crankshaft position sensor
: Vehicle front
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ENGINE TORQUE CONTROL
EC-1089
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1. Turbocharger boost control solenoid
valve2. Fuel pump 3. Turbocharger boost sensor
4. Refrigerant pressure sensor 5. EGR volume control valve 6. Engine oil filler cap
7. Accelerator pedal position sensor 8. Accelerator pedal
: Vehicle front
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EC-1090
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ENGINE TORQUE CONTROL
1. Fuel rail pressure sensor 2. Glow relay 3. Glow plug
4. Priming pump 5. Electronic throttle control actuator 6. Turbocharger boost control solenoid
valve
: Vehicle front
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ENGINE TORQUE CONTROL
EC-1091
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1. ASCD steering switch 2. ASCD switch 3. CANCEL switch
4. RESUME switch 5. SET - switch 6. SET + switch
7. Stop lamp switch 8. Brake pedal 9. ASCD clutch switch
10. Clutch pedal
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EC-1092
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GLOW CONTROL
GLOW CONTROL
System DescriptionINFOID:0000000001162542
Glow control involves controlling the glow plugs and the glow plugs "on" indicator light on the instrument panel
(via the can communication). The glow plugs are activated by a relay box and the power is provided by the
battery.
After the ignition is switched on. Preheating is activated for a period of time. The indicator light comes on for
the activation period which is dependent on the battery voltage, barometric pressure and engine coolant tem-
perature. When the engine coolant temperature is below a certain threshold, a postheating function enables
combustion stability, and thereby engine operation, to be improved (reduction in unburnt fuel and pollutant
emissions).
Component Parts LocationINFOID:0000000001611149
1. Priming pump 2. Fuel pump 3. Glow plug
4. Fuel rail 5. Turbocharger boost control solenoid
valve6. Turbocharger boost sensor
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GLOW CONTROL
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7. Engine coolant temperature sensor 8. Crankshaft position sensor 9. Glow relay
10. ECM 11. Mass air flow sensor 12. Electric throttle control actuator
13. Camshaft position sensor 14. EGR volume control valve 15. Fuel injector
1. Turbocharger boost sensor 2. Mass air flow sensor 3. EGR volume control valve
4. ECM 5. Battery 6. Engine coolant temperature sensor
7. Camshaft position sensor 8. Fuel injector 9. Crankshaft position sensor
: Vehicle front
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EC-1094
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GLOW CONTROL
1. Turbocharger boost control solenoid
valve2. Fuel pump 3. Turbocharger boost sensor
4. Refrigerant pressure sensor 5. EGR volume control valve 6. Engine oil filler cap
7. Accelerator pedal position sensor 8. Accelerator pedal
: Vehicle front
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COOLING FAN CONTROL
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COOLING FAN CONTROL
System DescriptionINFOID:0000000001162544
The cooling fan motor is controlled by the ECM.
COOLING FAN OPERATION WITH THE ENGINE RUNNING
Cooling fan operate is guaranteed by a 2-speed fan assembly (LOW speed and HIGH speed).The ECM
requests the IPDM E/R to actuate them via the can communication. To provide cooling:
 Engine running
- LOW speed is actuated when the engine coolant temperature exceeds 96 °C (205°F) and is deactivated
when it drops below 94 °C (201°F).
- HIGH speed is actuated when the engine coolant temperature exceeds 104 °C (219°F) and is deactivated
when it drops below 102 °C (216°F).
 If the engine coolant temperature exceeds the threshold of 115°C (239°F), the ECM requests the IPDM E/R,
via the CAN communication, to switch off the air conditioning compressor so as to reduce the load on the
engine and attempt to limit the rise in temperature. The cut-off request is cancelled if the engine coolant tem-
perature drops below 110°C (230°F).
 If a malfunction in the engine coolant temperature sensor circuit is detected, the ECM requests that HIGH
speed operation.
 In addition to engine management, the ECM centralises the cooling requirements for the climate control and
automatic transmission/sequential gearbox functions (where fitted).

EC-1098
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COOLING FAN CONTROL
Component Parts Location
INFOID:0000000001611150
1. Priming pump 2. Fuel pump 3. Glow plug
4. Fuel rail 5. Turbocharger boost control solenoid
valve6. Turbocharger boost sensor
7. Engine coolant temperature sensor 8. Crankshaft position sensor 9. Glow relay
10. ECM 11. Mass air flow sensor 12. Electric throttle control actuator
13. Camshaft position sensor 14. EGR volume control valve 15. Fuel injector
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