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Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Power Control System) >> IPDM E/R >> Function Diagnosis >> Relay Control System >> System Description
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System Description

WARNING: This page is about a different car, the 2008 Nissan Titan. 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.

CAUTION: IPDM E/R integrated relays cannot be removed.
IPDM E/R SYSTEM DESCRIPTION

Control relay Input/output Transmit unit Control part Reference
Front fog lamp relay(1) Front fog lamp request signal BCM (CAN) Front fog lamps FRONT FOG LAMP
  • Headlamp high relay
  • Headlamp low relay
  • High beam request signal
  • Low beam request signal
 BCM (CAN)
  • Headlamp high
  • Headlamp low
 FUNCTION DIAGNOSIS
FUNCTION DIAGNOSIS
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 LAMPS
  • Front wiper relay
  • Front wiper high relay
 Front wiper request signal BCM (CAN) Front wiper motor FUNCTION DIAGNOSIS
Rear window defogger relay(1) Rear window defogger request signal BCM (CAN) Rear window defogger FUNCTION DIAGNOSIS
A/C relay A/C request signal
  • BCM (CAN)
  • ECM (CAN)
 A/C compressor AUTOMATIC AIR CONDITIONER SYSTEM , MANUAL AIR CONDITIONER SYSTEM , MANUAL AIR CONDITIONER SYSTEM , MANUAL AIR CONDITIONER SYSTEM
Starter relay Ignition switch START signal TCM Starter motor FUNCTION DIAGNOSIS
Cooling fan relay Cooling fan request signal ECM (CAN) Cooling fan relay COOLING FAN CONTROL
Heated mirror relay(1) Heated mirror request signal BCM (CAN) Door mirrors FUNCTION DIAGNOSIS
ECM relay ECM relay control signal ECM (CAN) ECM relay MULTIPORT FUEL INJECTION SYSTEM
Throttle control motor relay Throttle control motor control signal ECM (CAN) Throttle control motor relay MULTIPORT FUEL INJECTION SYSTEM
Fuel pump relay Fuel pump request signal ECM (CAN) Fuel pump MULTIPORT FUEL INJECTION SYSTEM
Ignition relay Ignition switch ON signal Ignition switch Ignition relay ELECTRIC IGNITION SYSTEM
(1) If equipped
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