LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2013 >> M37 Base >> Repair and Diagnosis >> Electrical >> Body Electrical >> Power Control System (IPDM/Er) >> System Description >> System >> Relay Control System >> RELAY CONTROL SYSTEM: System Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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: To prevent damage to the parts, IPDM E/R integrated relays cannot be removed.
Control relay Input/output Transmit unit Control part Refer to
Headlamp low relay
  • Low beam request signal
  • Daytime running light request signal
BCM (CAN) Headlamp (LO)
Headlamp high relay High beam request signal BCM (CAN) Headlamp (HI)
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
Illumination SYSTEM
  • Front wiper main relay
  • Front wiper HI/LO relay
Front wiper request signal BCM (CAN) Front wiper motor SYSTEM
Front wiper position signal Front wiper motor
  • Horn relay
  • Vehicle security horn relay
  • Theft warning horn request signal
  • Horn reminder signal
BCM (CAN)
  • Horn (high)
  • Vehicle security horn
VEHICLE SECURITY SYSTEM
  • Starter relay(1)
  • Starter control relay
Starter control relay signal BCM (CAN) Starter motor
Steering lock unit condition signal Steering lock unit
Starter relay control signal TCM
A/C relay A/C compressor request signal ECM (CAN) A/C compressor (magnet clutch) AUTOMATIC AIR CONDITIONING SYSTEM: AIR OUTLET CONTROL
Ignition relay Ignition switch ON signal BCM (CAN) Each control unit, sensor, actuator and relay (ignition power supply) SYSTEM DESCRIPTION
Vehicle speed signal Combination meter (CAN)
Push-button ignition switch signal Push-button ignition switch
Daytime running light relay
  • Daytime running light request signal
  • Position light request signal
BCM (CAN)
  • Headlamp (LO)
  • Parking lamp
  • License plate lamp
  • Tail lamp
  • Side marker lamp
AUTO LIGHT SYSTEM (WITH DTRL): SYSTEM DESCRIPTION
NOTE:
(1) BCM controls the starter relay.