Nissan Altima L32. Manual - part 490

ELECTRIC IGNITION SYSTEM

EC-1081

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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

EC-1448, "Description"

Camshaft position sensor (PHASE)

EC-1296, "Description"

Crankshaft position sensor (POS)

EC-1292, "Description"

Engine coolant temperature sensor

EC-1210, "Description"

Ignition signal

EC-1491, "Description"

Knock sensor

EC-1289, "Description"

Mass air flow sensor

EC-1194, "Description"

Park/neutral position (PNP) switch

EC-1382, "Description"

EC-1082

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ELECTRIC IGNITION SYSTEM

TCM (CVT)

EC-1382, "Description"

Throttle position sensor

EC-1215, "Description"

Component

Reference

AIR CONDITIONING CUT CONTROL

EC-1083

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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

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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