RELAY CONTROL SYSTEM: System 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: IPDM E/R integrated relays cannot be removed.

Control relay	Input/output	Transmit unit	Control part	Reference
Headlamp high relay Headlamp low relay	High beam request signal Low beam request signal	BCM (CAN)	Headlamp high Headlamp low Daytime light relay 2	SYSTEM HEADLAMP SYSTEM: SYSTEM DESCRIPTION - FOR CANADA
Tail lamp relay	Position light request signal	BCM (CAN)	Parking lamps License plate lamps Tail lamps Trailer tow relay-1 Illumination system	PARKING, LICENSE PLATE AND TAIL LAMP SYSTEM: SYSTEM DIAGRAM ILLUMINATION CONTROL SYSTEM
Front fog lamp relay	Fog lamp request signal	BCM (CAN)	Front fog lamps	DAYTIME RUNNING LIGHT SYSTEM: SYSTEM DIAGRAM - FOR CANADA
Front wiper relay Front wiper high relay	Front wiper request signal	BCM (CAN)	Front wiper motor	SYSTEM
Rear window defogger relay	Rear window defogger request signal	BCM (CAN)	Rear window defogger	SYSTEM
A/C relay	A/C request signal	BCM (CAN) ECM (CAN)	A/C compressor	FRONT MANUAL AIR CONDITIONING SYSTEM: AIR INLET CONTROL
Starter relay	Ignition switch START signal	TCM	Starter motor	SYSTEM
Cooling fan relay 1 Cooling fan relay 2	Cooling fan request signal	ECM (CAN)	Cooling fan motor (low) Cooling fan motor (hi)	CAN COMMUNICATION: SYSTEM DESCRIPTION (VQ40DE) COAST OPERATION (VK56DE)
Heated mirror relay	Heated mirror request signal	BCM (CAN)	Door mirrors	WIRING DIAGRAM
ECM relay	ECM relay control signal	ECM (CAN)	ECM	ENGINE CONTROL SYSTEM: SYSTEM DESCRIPTION (VQ40DE) SYSTEM (VK56DE)
Throttle control motor relay	Throttle control motor control signal	ECM (CAN)	ECM	MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (VQ40DE) MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (VK56DE)
Fuel pump relay	Fuel pump request signal	ECM (CAN)	Fuel pump	MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (VQ40DE) MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (VK56DE)
Ignition relay	Ignition switch ON or START signal	Ignition switch	Ignition switch ON or START power	FUEL INJECTION TIMING (VQ40DE) FUEL INJECTION TIMING (VK56DE)