Functional Diagram

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Auto Cruise Control System Functional Diagram

Courtesy of NISSAN MOTOR CO., U.S.A.

Items of input/output signal to be checked with CONSULT-III

INPUT SIGNAL CHART

Input	Data monitored Item [unit]	CAN	Description
ECM	THRTL OPENING [%]	x	Indicates throttle angle read by ICC unit through CAN communication (ECM transmits throttle angle through CAN communication).
	ENGINE RPM [rpm]	x	Indicates engine speed read by ICC unit through CAN communication (ECM transmits engine speed through CAN communication).
	MAIN SW [ON/OFF]	x	Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steering switch signal through CAN communication).
	SET/COAST SW [ON/OFF]	x	Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steering switch signal through CAN communication).
	CANCEL SW [ON/OFF]	x	Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steering switch signal through CAN communication).
	RESUME/ACC SW [ON/OFF]	x	Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steering switch signal through CAN communication).
	IDLE SW [ON/OFF]	x	Indicates [ON/OFF] status of idle switch read by ICC unit through CAN communication (ECM transmits ON/OFF status through CAN communication).
TCM	VHCL SPD AT [km/h] or [mph]	x	Indicates vehicle speed calculated from AT vehicle speed sensor by ICC unit through CAN communication (TCM transmits AT vehicle speed sensor signal through CAN communication).
	GEAR [1, 2, 3, 4, 5]	x	Indicates AT gear position read by ICC unit through CAN communication (TCM transmits gear position through CAN communication).
	D RANGE SW [ON/OFF]	x	Indicates [ON/OFF] status of "D" position read by ICC unit through CAN communication (TCM transmits ON/OFF condition of "D" position through CAN communication).
	NP RANGE SW [ON/OFF]	x	Indicates PNP switch signal read by ICC unit through CAN communication (TCM transmits PNP switch signal through CAN communication).
ABS actuator and electric unit (control unit)	VHCL SPEED SE [km/h] or [mph]	x	Indicates vehicle speed calculated from wheel sensor by ICC unit through CAN communication (ABS actuator and electric unit (control unit) transmits wheel speed sensor signal through CAN communication).
BCM	WIPER SW [OFF/LOW/HIGH]	x	Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request signal through CAN communication).
Brake pressure sensor	PRESS SENS [bar]		Indicates brake fluid pressure value calculated from signal voltage of pressure sensor.
Release switch	RELEASE SW NO [ON/OFF]		Indicates [ON/OFF] status as judged from release switch signal. ON when brake is depressed. OFF when brake is not depressed.
Release switch	RELEASE SW NC [ON/OFF]		Indicates [ON/OFF] status as judged from release switch signal. ON when brake is not depressed. OFF when brake is depressed.
ICC brake switch	BRAKE SW [ON/OFF]		Indicates [ON/OFF] status as judged from ICC brake switch signal.
Stop lamp switch	STOP LAMP SW [ON/OFF]		Indicates [ON/OFF] status as judged from stop lamp switch signal.

OUTPUT SIGNAL CHART

Output	Data monitored Item [unit]	CAN	Description
ICC warning chime	BUZZER O/P [ON/OFF]	x	Indicates [ON/OFF] status of ICC warning chime output.
ICC brake hold relay	STP LMP DRIVE [ON/OFF]		Indicates [ON/OFF] status of brake hold relay drive output.

OUTPUT SIGNAL CHART

Output	CONSULT-III ICC [ACTIVE TEST] Item	CAN	Description
Combination meter	ICC BUZZER 1	x	Able to start ICC warning chime with a driving signal from ICC unit.
Combination meter	METER LAMP	x	Able to turn ICC system display ON with a driving signal from ICC unit.
ICC brake hold relay	STOP LAMP		Able to start ICC brake hold relay with a driving signal from ICC unit.
Booster solenoid	BOOSTER SOL/V 3		Able to start booster solenoid with a driving signal from ICC unit.