RELAY CONTROL SYSTEM : System Description

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM DIAGRAM

Fig 1: Relay Control System Diagram

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

DESCRIPTION

IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication.

CAUTION: To prevent damage to the parts, IPDM E/R integrated relays cannot be removed.

RELAY CONTROL SYSTEM REFERENCE CHART

Control relay	Input/output	Transmit unit	Control part	Reference Information
Headlamp low relay Headlamp high relay	Low beam request signal High beam request signal	BCM (CAN)	Headlamp (LO) Headlamp (HI)	SYSTEM
Front fog lamp relay	Front fog light request signal	BCM (CAN)	Front fog lamp	FRONT FOG LAMP SYSTEM
Tail lamp relay	Position light request signal	BCM (CAN)	Parking lamp License plate lamp Tail lamp Side marker lamp	TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM : SCHEMATIC
Tail lamp relay	Position light request signal	BCM (CAN)	Illumination	SYSTEM
Front wiper relay Front wiper HI/LO relay	Front wiper request signal	BCM (CAN)	Front wiper motor	SYSTEM
Front wiper relay Front wiper HI/LO relay	Front wiper stop position signal	Front wiper motor	Front wiper motor	SYSTEM
Rear window defogger relay	Rear window defogger control signal	BCM (CAN)	Rear window defogger	SYSTEM
Horn relay	Theft warning horn request signal	BCM (CAN)	Vehicle security horn	VEHICLE SECURITY SYSTEM : SYSTEM DIAGRAM
Ignition relay	Power switch ON signal	BCM (CAN)	Each control unit, sensor, actuator and relay (Ignition power supply)	B2098 IGNITION RELAY ON STUCK
	Vehicle speed signal (Meter)	Combination meter (CAN)
	Power switch signal	Power switch