Grand Caravan V6-3.3L VIN R (2005)
Power Interrupt Connector/Switch: Description and Operation
All vehicles are equipped with an Ignition-Off Draw (IOD) fuse that is removed from its normal cavity in the Integrated Power Module (IPM) when the
vehicle is shipped from the factory. Dealer personnel are to remove the IOD fuse from the storage location and install it into the IPM fuse cavity marked
IOD as part of the preparation procedures performed just prior to new vehicle delivery.
The IOD fuse is a 20 ampere blade-type mini fuse and, when removed, it is stored in a fuse cavity adjacent to the washer fuse within the IPM.
The term ignition-off draw (IOD) identifies a normal condition where power is being drained from the battery with the ignition switch in the Off position.
The IOD fuse feeds the memory and sleep mode functions for some of the electronic modules in the vehicle as well as various other accessories that
require battery current when the ignition switch is in the Off position, including the clock. The only reason the IOD fuse is removed is to reduce the
normal IOD of the vehicle electrical system during new vehicle transportation and pre-delivery storage to reduce battery depletion, while still allowing
vehicle operation so that the vehicle can be loaded, unloaded and moved as needed by both vehicle transportation company and dealer personnel.
The IOD fuse is removed from the Integrated Power Module (IPM) fuse cavity when the vehicle is shipped from the assembly plant. Dealer personnel
must install the IOD fuse when the vehicle is being prepared for delivery in order to restore full electrical system operation. Once the vehicle is prepared
for delivery, the IOD function of this fuse becomes transparent and the fuse that has been assigned the IOD designation becomes only another Fused
B(+) circuit fuse. The IOD fuse serves no useful purpose to the dealer technician in the service or diagnosis of any vehicle system or condition, other
than the same purpose as that of any other standard circuit protection device.
The IOD fuse can be used by the vehicle owner as a convenient means of reducing battery depletion when a vehicle is to be stored for periods not to
exceed approximately thirty days. However, it must be remembered that removing the IOD fuse will not eliminate IOD, but only reduce this normal
condition. If a vehicle will be stored for more than thirty days, the battery negative cable should be disconnected to eliminate normal IOD; and, the
battery should be tested and recharged at regular intervals during the vehicle storage period to prevent the battery from becoming discharged or
damaged.