Nissan Altima 2007-2012 Service Manual: Intake valve timing control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
Component Parts Location
1. Intake valve timing control solenoid valve
2. Ignition coil (with power transistor) and spark plug
3. Knock sensor, Crankshaft position sensor (POS)
4. Air fuel ratio (A/F) sensor 1
5. Camshaft position sensor (PHASE)
6. Engine coolant temperature sensor
7. Park/neutral position (PNP) switch
8. ECM
9. Refrigerant pressure sensor
10. Battery current sensor
11. IPDM E/R
12. Mass air flow sensor (with intake temperature sensor)
13. Tumble control valve actuator
14. EVAP service port
15. Electric throttle control actuator (with built in throttle position sensor and throttle control motor)
16. EVAP canister purge volume control solenoid valve
17. Fuel injector
18. Power steering pressure sensor
1. Battery
2. Fuel pump fuse (15A)
3. IPDM E/R
4. Brake master cylinder
5. Engine ground
6. Air cleaner assembly
7. Mass air flow sensor (with intake air temperature sensor)
8. Radiator hose (upper)
9. Engine coolant temperature sensor
10. Intake air duct
11. Camshaft position sensor (PHASE)
12. Tie rod (RH)
13. Power steering pressure sensor
14. Knock sensor
15. Engine oil cooler
16. Crankshaft position sensor (POS)
17. Drive shaft (RH)
1. Exhaust manifold cover
2. Air fuel ratio (A/F) sensor 1
3. Heated oxygen sensor 2 (This illustration is a view from under vehicle.)
4. Engine oil pan
1. EVAP service port
2. Intake air duct
3. EVAP canister purge volume control solenoid valve
4. Intake manifold collector
5. Park/neutral position (PNP) switch (CVT) (This illustration is view with air cleaner assembly removed.)
6. Park/neutral position (PNP) switch (M/T) (This illustration is view with air cleaner assembly removed.)
7. Intake valve timing control solenoid valve (This illustration is view with engine removed.)
8. Exhaust manifold cover
9. Air fuel ratio (A/F) sensor 1
10. Air fuel ratio (A/F) sensor 1 harness connector
11. Heated oxygen sensor 2 (This illustration is view from under vehicle.)
12. Heated oxygen sensor 2 harness connector (This illustration is view from under vehicle.)
13. Engine oil pan
14. Heated oxygen sensor 3 (This illustration is view form under vehicle.)
15. Heated oxygen sensor 3 harness connector (This illustration is view from under vehicle.)
1. Thermostat housing
2. Tumble control valve actuator
3. Throttle valve (This illustration is view with intake air duct removed.)
4. Electric throttle control actuator
5. Fuel injector harness connector
6. Condenser-2
7. Radiator hose (upper)
8. Battery
9. ECM
10. Fuel level sensor unit and fuel pump harness connector (This illustration is view with rear seat cushion and inspection hole cover removed.)
11. Fuel level sensor unit and fuel pump assembly
12. Fuel pressure regulator
13. Fuel tank temperature sensor
14. EVAP control system pressure sensor (This illustration is view with rear suspension member removed.)
15. EVAP canister vent control valve (This illustration is view with rear suspension member removed.)
16. EVAP canister (This illustration is view with rear suspension member removed.)
1. No.1 ignition coil
2. Cooling fan motor-1 harness connector
3. Cooling fan motor-2 harness connector
4. Refrigerant pressure sensor
5. Accelerator pedal position sensor
6. ASCD brake switch
10. Clutch pedal
11. ASCD steering switch
12. CANSEC switch
13. RESUME/ACCELERATE switch
14. SET/COAST switch
15. MAIN switch
Component Description
Evaporative emission system
System Diagram
EVAPORATIVE EMISSION LINE DRAWING
1. Intake manifold collector
2. EVAP service port
3. EVAP canister purge volume control
solenoid valve
A. From next figure
1. EVAP contro ...
Tumble control valve control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: ECM determines the start signal status by the signals of engine speed and
battery voltage.
SYSTEM DESCRIPTION
Tumble control ...
Other materials:
Function information
Component Part Location
ENGINE COMPARTMENT
1. A/C compressor F3
2. Refrigerant pressure sensor E219
3. A/C relay (internal to IPDM E/R)
1. A/C compressor F3
2. Refrigerant pressure sensor E219
3. A/C relay (internal to IPDM E/R)
PASSENGER COMPARTMENT
1. Intake door motor M126
2. Fro ...
NISSAN Voice Recognition System (if so equipped)
The NISSAN Voice Recognition system allows
hands-free operation of the systems equipped on
this vehicle, such as the phone and navigation
systems.
To operate NISSAN Voice Recognition, press
the button located on the steering
wheel.
When prompted, speak the command for the
system you wi ...
P1805 Brake switch
Description
Brake switch signal is applied to the ECM via the stop lamp switch when the
brake pedal is depressed. This
signal is used mainly to decrease the engine speed when the vehicle is being
driven.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION ...