WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.

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.

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

Control relay	Input/output	Transmit unit	Control part	Reference
Headlamp relay	Low beam request signal High beam request signal	BCM (CAN)	Headlamp	System Description
Front fog lamp relay	Front fog light request signal	BCM (CAN)	Front fog lamp	System Description
Tail lamp relay	Position light request signal	BCM (CAN)	Parking lamp License plate lamp Tail lamp Side marker lamp	System Description
Tail lamp relay	Position light request signal	BCM (CAN)	Illumination	System Description
Front wiper relay Front wiper HI/LO relay	Front wiper request signal Front wiper service position signal	BCM (CAN)	Front wiper motor	System Description
Front wiper relay Front wiper HI/LO relay	Front wiper stop position signal	Front wiper motor	Front wiper motor	System Description
Horn relay	Theft warning horn request signal	BCM (CAN)	Horn	System Description
Vehicle security horn relay	Theft warning horn request signal	BCM (CAN)	Vehicle security horn	System Description
Starter relay* Starter control relay	Starter control relay signal	BCM (CAN)	Starter motor	System Description
Starter relay* Starter control relay	Starter relay control signal	TCM	Starter motor	System Description
A/C relay	A/C compressor request signal	ECM (CAN)	A/C compressor (Magnet clutch)	Compressor Control
Daytime running light relay	Daytime running light request signal	BCM (CAN)	Daytime running light	System Description
Ignition relay	Ignition switch ON signal	BCM (CAN)	Each control unit, sensor, actuator and relay (Ignition power supply)	DTC Description
	Vehicle speed signal (Meter)	Combination meter (CAN)
	Push-button ignition switch signal	Push-button ignition switch

*: BCM controls the starter relay.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

System Description: Description

Use the Manual With the Right Hardware

When to See a Mechanic