Nissan 350Z Workshop Maunual 2005 (31) PDF | Page 16

PG-16
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2005 August 2005 350Z
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System Description AKS00A2H
? IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine room. It controls integrated relay via IPDM E/R control circuit.
? IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control,
hood switch signal reception, etc.
? It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication line, it receives signal from BCM and controls the following lamps:
? Headlamps (Hi, Lo)
? Parking lamps
? Tail lamps
? License plate lamps
2. Wiper control
Using CAN communication line, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control
Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C relay.
5. Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN H
line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control
? When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.
? Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp
? With the ignition switch ON, the headlamp (low) is ON.
? With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps
? With the ignition switch ON, the tail and parking lamps is ON.
? With the ignition switch OFF, the tail and parking lamps is OFF.
Cooling fan
? With the ignition switch ON, the cooling fan HI operates.
? With the ignition switch OFF, the cooling fan stops.
Front wiper
Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail?safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF

Nissan 350Z Workshop Maunual 2005 (31) Summary of Content

PG-16IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)Revision: 2005 August 2005 350ZIPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)PFP:284B7System Description AKS00A2H IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse blockwhich were originally placed in engine room. It controls integrated relay via IPDM E/R control circuit. IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control,hood switch signal reception, etc. It controls operation of each electrical part via ECM, BCM and CAN communication lines.CAUTION:None of the IPDM E/R-integrated relays can be removed.SYSTEMS CONTROLLED BY IPDM E/R1. Lamp controlUsing CAN communication line, it receives signal from BCM and controls the following lamps: Headlamps (Hi, Lo) Parking lamps Tail lamps License plate lamps2. Wiper controlUsing CAN communication line, it receives signals from BCM and controls the front wipers.3. Rear window defogger relay controlUsing CAN communication line, it receives signals from BCM and controls the rear window defoggerrelay.4. A/C compressor controlUsing CAN communication line, it receives signals from ECM and controls the A/C relay.5. Cooling fan controlUsing CAN communication line, it receives signals from ECM and controls cooling fan relay.CAN COMMUNICATION LINE CONTROLWith CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN Hline), it is possible to transmit maximum amount of information with minimum wiring. Each control unit cantransmit and receive data, and reads necessary information only.1. Fail-safe control When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.After CAN communication recovers normally, it also returns to normal control. Operation of control parts by IPDM E/R during fail-safe mode is as follows:Controlled system Fail-safe modeHeadlamp With the ignition switch ON, the headlamp (low) is ON. With the ignition switch OFF, the headlamp (low) is OFF. Tail and parking lamps With the ignition switch ON, the tail and parking lamps is ON. With the ignition switch OFF, the tail and parking lamps is OFF. Cooling fan With the ignition switch ON, the cooling fan HI operates. With the ignition switch OFF, the cooling fan stops.Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just before failsafe control was initiated.Rear window defogger Rear window defogger relay OFFA/C compressor A/C compressor OFF