Nissan Altima L32. Instruction — part 490
ELECTRIC IGNITION SYSTEM
EC-1081
< FUNCTION DIAGNOSIS >
[VQ35DE]
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Component Description
INFOID:0000000004361972
1.
ASCD brake switch
2.
Stop lamp switch
3.
Brake pedal
4.
ASCD steering switch
5.
ASCD clutch switch (M/T models)
6.
Clutch pedal
ALBIA0105ZZ
Component
Reference
Accelerator pedal position sensor
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine coolant temperature sensor
Ignition signal
Knock sensor
Mass air flow sensor
Park/neutral position (PNP) switch
EC-1082
< FUNCTION DIAGNOSIS >
[VQ35DE]
ELECTRIC IGNITION SYSTEM
TCM (CVT)
Throttle position sensor
Component
Reference
AIR CONDITIONING CUT CONTROL
EC-1083
< FUNCTION DIAGNOSIS >
[VQ35DE]
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AIR CONDITIONING CUT CONTROL
System Diagram
INFOID:0000000004361973
System Description
INFOID:0000000004361974
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.
JMBIA1528GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
2
Air conditioner
cut control
IPDM E/R
↓
Air conditioner relay
↓
Compressor
Engine coolant temperature sensor
Engine coolant temperature
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
2
Refrigerant pressure sensor
Refrigerant pressure
Power steering pressure sensor
Power steering operation
Unified meter and A/C amp.
Air conditioner ON signal*
1
Vehicle speed*
1
EC-1084
< FUNCTION DIAGNOSIS >
[VQ35DE]
AIR CONDITIONING CUT CONTROL
Component Parts Location
INFOID:0000000004404405
1.
Power valve actuator 1
2.
Intake valve timing control solenoid
valve (bank 1)
3.
Power steering pressure sensor
4.
Intake valve timing control solenoid
valve (bank 2)
5.
VIAS control solenoid valves 1 and 2 6.
Fuel injector (bank 2)
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Crankshaft position sensor (POS)
9.
Engine coolant temperature sensor
10. Camshaft position sensor (PHASE)
(bank 2)
11. ECM
12. Refrigerant pressure sensor
13. Battery current sensor
14. PNP switch
15. Condenser-2
16. Mass air flow sensor (with intake air
temperature sensor)
17. EVAP service port
18. Camshaft position sensor (PHASE)
(bank 1)
19. Electric throttle control actuator
20. Power valve actuator 2
21. EVAP canister purge volume control
solenoid valve
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. Knock sensor
ALBIA0110ZZ
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