ELECTRIC IGNITION SYSTEM

VR38

System Diagram
System Description
Component Parts Location
Component Description

System Diagram

System Description

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.
Sensor	Input Signal to ECM	ECM function	Actuator
Crankshaft position sensor (POS)	Engine speed*² Piston position	Ignition timing control	Ignition coil (with power transistor)
Camshaft position sensor (PHASE)	Engine speed*² Piston position
Mass air flow sensor	Amount of intake air
Turbochager boost sensor	Turbochager boost
Engine coolant temperature sensor	Engine coolant temperature
Throttle position sensor	Throttle position
Accelerator pedal position sensor	Accelerator pedal position
TCM	Gear position
Battery	Battery voltage*²
Knock sensor	Engine knocking
Combination meter.	Vehicle speed*¹

SYSTEM DESCRIPTION

Ignition order: 1 - 2 - 3 - 4 - 5 - 6
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM.

At starting
During warm-up
At idle
At low battery voltage
During acceleration

The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.

Component Parts Location

1.	Air cut solenoid valve relay	2.	Recirculation valve (bank 1)	3.	Refrigerant pressure sensor
4.	Mass air flow sensor (with intake air temperature sensor) (bank 1)	5.	Power steering pressure sensor	6.	EVAP canister purge volume control solenoid valve
7.	Cooling fan motor	8.	Cooling fan control module	9.	Intake valve timing control solenoid valve
10.	Turbocharger boost control solenoid valve	11.	Mass air flow sensor (with intake air temperature sensor) (bank 2)	12.	Recirculation valve (bank 2)
13.	Turbocharger boost sensor (bank 2)	14.	Cooling fan relay-1	15.	Cooling fan relay-2
16.	Electric throttle control actuator (bank 2)	17.	Ignition coil (with power transistor) and spark plug (bank 2)	18.	Camshaft position sensor (PHASE) (bank 2)
19.	Air cut solenoid valve (bank 2)	20.	Crankshaft position sensor (POS)	21.	Fuel injector (bank 2)
22.	Knock sensor	23.	Engine oil temperature sensor	24.	Fuel injector (bank 1)
25.	Engine coolant temperature sensor	26.	A/F sensor 1 (bank 1)	27.	Camshaft position sensor (PHASE) (bank 1)
28.	Air cut solenoid valve (bank 1)	29.	Manifold absolute pressure sensor	30.	Ignition coil (with power transistor) and spark plug (bank 1)
31.	Electric throttle control actuator (bank 1)	32.	EVAP service port	33.	Turbocharger boost sensor (bank 1)
34.	IPDM E/R	35.	Air pump cleaner	36.	Air pump
37.	Air pump relay

1.	Mass air flow sensor (with intake air temperature sensor) (bank 1)	2.	Mass air flow sensor (with intake air temperature sensor) (bank 2)
	:Vehicle front

1.	Manifold absolute pressure sensor	2.	Electric throttle control actuator (bank 1)	3.	Turbocharger boost sensor (bank 1)
4.	Turbocharger boost sensor (bank 2)	5.	Electric throttle control actuator (bank 2)
	:Vehicle front

1.	Intake valve timing control solenoid valve (bank1)	2.	Intake valve timing control solenoid valve (bank2)
	:Vehicle front

1.	Cooling fan relay-2	2.	Cooling fan relay-1	3.	Cooling fan motor-1
4.	Cooling fan control module-1	5.	Cooling fan control module-2	6.	Cooling fan motor-2
	:Vehicle front

1.	Power steering pressure sensor	2.	Refrigerant pressure sensor
	:Vehicle front

1.	EVAP service port	2.	EVAP canister purge volume control solenoid valve	3.	EVAP canister
4.	EVAP control system pressure sensor	5.	EVAP canister vent control valve
	:Vehicle front

1.	Ignition coil No.1 (with power transistor)	2.	Ignition coil No.3 (with power transistor)	3.	Ignition coil No.5 (with power transistor)
4.	Condenser	5.	Ignition coil No.6 (with power transistor)	6.	Ignition coil No.4 (with power transistor)
7.	Ignition coil No.2 (with power transistor)	8.	Fuel injector No.1	9.	Fuel injector No.3
10.	Fuel injector No.5	11.	Fuel pressure regulator	12.	Fuel injector No.6
13.	Fuel injector No.4	14.	Fuel injector No.2
	:Vehicle front

1.	Camshaft position sensor (PHASE) (bank 1)	2.	Camshaft position sensor (PHASE) (bank 2)
	:Vehicle front

1.	Engine oil temperature sensor	2.	PCV valve
	:Vehicle front

1.	Crankshaft position sensor (POS)	2.	Knock sensor (bank1)	3.	Knock sensor (bank2)
	:Vehicle front

1.	Boost control actuator (bank1)	2.	Turbocharger boost control solenoid valve	3.	Boost control actuator (bank2)
	:Vehicle front

1.	Heated oxygen sensor 2 (bank 2)	2.	Heated oxygen sensor 2 (bank 1)
	:Vehicle front

1.	A/F sensor 1 (bank 1) harness connector	2.	A/F sensor 1 (bank 2) harness connector
	:Vehicle front

1.	A/F sensor 1 (bank 2)	2.	A/F sensor 1 (bank 1)	3.	Fuel pump control module (FPCM)
	:Vehicle front

1.	Sub fuel pump harness connector	2.	Main fuel gauge fuel filter fuel pump assembly harness connector	3.	Sub fuel pump
4.	Main fuel gauge fuel filter fuel pump assembly	5.	Fuel pump
	:Vehicle front

1.	ECM	2.	Brake switch	3.	Stop lamp switch
4.	Accelerator pedal position sensor

1.	ASCD steering switch	2.	RESUME/ACCELERATE switch	3.	SET/COAST switch
4.	CANCEL switch	5.	MAIN switch

1.	Air cut solenoid valve (bank 2)	2.	Air cut solenoid valve (bank 1)	3.	Engine coolant temperature sensor
4.	Air pump	5.	Secondary air injection system mass air flow sensor
	:Vehicle front

1.	Air cut solenoid valve relay	2.	Air pump relay	3.	Air pump cleaner
4.	IPDM E/R

Component Description

Component	Reference
Accelerator pedal position sensor	Description (GT-R certified NISSAN dealer)
Camshaft position sensor (PHASE)	Description (GT-R certified NISSAN dealer)
Crankshaft position sensor (POS)	Description (GT-R certified NISSAN dealer)
Engine coolant temperature sensor	Description (GT-R certified NISSAN dealer)
Knock sensor	Description (GT-R certified NISSAN dealer)
Mass air flow sensor	Description (GT-R certified NISSAN dealer)
Throttle position sensor	Description (GT-R certified NISSAN dealer)
Turbocharger boost sensor	Description (GT-R certified NISSAN dealer)