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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-19 C D E F G H I J L M A B PG 2007 Pathfinder IPDM E/R STATUS CONTROL In order to save power, IPDM E/R switches status by itself based on each operating condition. 1. CAN communication status ● CAN communication is normally performed with other control units. ● Individual unit control by IPDM E/R is normally performed. ● When sleep request signal is received from BCM, mode is switched to sleep waiting status. 2. Sleep waiting status ● Process to stop CAN communication is activated. ● All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi- 3. Sleep status ● IPDM E/R operates in low current-consumption mode. ● CAN communication is stopped. ● When a change in CAN communication signal is detected, mode switches to CAN communication sta- ● When a change in ignition switch signal is detected, mode switches to CAN communication status. CAN Communication System Description EKS00G8F Refer to Function of Detecting Ignition Relay Malfunction EKS00G8G ● When the integrated ignition relay is stuck in a "closed contact" position and cannot be turned OFF, IPDM ● When the state of the integrated ignition relay does not agree with the state of the ignition switch signal NOTE: 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 − safe control was initiated. Rear window defogger Rear window defogger relay OFF A/C compressor A/C compressor OFF Front fog lamps Front fog lamp relay OFF Controlled system Fail-safe mode Ignition switch signal Ignition relay status Tail lamp relay ON ON — OFF OFF — ON OFF — OFF ON ON (10 minutes) |