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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.
RELAY CONTROL SYSTEM REFERENCE

Control relay Input/output Transmit unit Control part Reference page
Front fog lamp relay (if equipped) Front fog lamp request signal BCM (CAN) Front fog lamps (if equipped) FRONT FOG LAMP CIRCUIT CHECK
  • Headlamp (LH) high relay
  • Headlamp (RH) high relay
  • Headlamp low relay
  • High beam request signal
  • Low beam request signal
 BCM (CAN)
  • Headlamp high
  • Headlamp low
 HEADLAMP: SYSTEM DESCRIPTION
HEADLAMP (LO) CIRCUIT CHECK
Tail lamp relay Position light request signal BCM (CAN)
  • Parking lamps
  • License plate lamps
  • Tail lamps
  • Trailer tow relay (if equipped)
  • Illumination system
 PARKING LAMP CIRCUIT CHECK
  • Front wiper relay
  • Front wiper high relay
 Front wiper request signal BCM (CAN) Front wiper motor WIPER AND WASHER SYSTEM SYMPTOMS: SYMPTOM TABLE
Rear window defogger relay Rear window defogger request signal BCM (CAN) Rear window defogger REAR WINDOW DEFOGGER SYSTEM: SYSTEM DESCRIPTION
A/C relay A/C request signal
  • BCM (CAN)
  • ECM (CAN)
 A/C compressor MAGNET CLUTCH CIRCUIT CHECK
Starter relay Ignition switch START signal TCM Starter motor STARTING SYSTEM: SYMPTOM TABLE
Cooling fan relays Cooling fan request signal ECM (CAN) Cooling fan relay COOLING FAN CONTROL: DESCRIPTION
Heated mirror relay Heated mirror request signal BCM (CAN) Door mirrors REAR WINDOW DEFOGGER SYSTEM: SYSTEM DESCRIPTION
ECM relay ECM relay control signal ECM (CAN) ECM relay ENGINE CONTROL SYSTEM: SYSTEM DIAGRAM (QR25DE) or ENGINE CONTROL SYSTEM: SYSTEM DIAGRAM (VQ40DE)
Throttle control motor relay Throttle control motor control signal ECM (CAN) Throttle control motor relay MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (QR25DE) or MULTIPORT FUEL INJECTION SYSTEM: SYSTEM DESCRIPTION (VQ40DE)
Fuel pump relay Fuel pump request signal ECM (CAN) Fuel pump FUEL PUMP CIRCUIT CHECK
Ignition relay Ignition switch ON signal Ignition switch Ignition relay IGNITION SIGNAL CIRCUIT CHECK
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