Pathfinder 4WD V6-4.0L (VQ40DE) (2006)
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Operation of control parts by IPDM E/R during fail-safe mode is as shown:
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
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CAN communication is normally performed with other control units.
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Individual unit control by IPDM E/R is normally performed.
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When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status
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Process to stop CAN communication is activated.
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All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communication with other control units is stopped,
mode switches to sleep status.
3. Sleep status
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IPDM E/R operates in low current-consumption mode.
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CAN communication is stopped.
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When a change in CAN communication signal is detected, mode switches to CAN communication status.
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When a change in ignition switch signal is detected, mode switches to CAN communication status.
CAN Communication System Description
Refer to LAN-25, Information Bus. See: Powertrain Management/Computers and Control Systems/Information Bus