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Home >> Land Rover >> 2022 >> Defender 90 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Battery Charging - INGENIUM I6 3.0L Petrol - Vehicles With: MHEV -- Defender/L663) >> Battery Charging - INGENIUM I6 3.0L Petrol, Vehicles With: MHEV >> Description And Operation >> Direct Current To Direct Current Converter (G2391071) >> Operation >> Dc/Dc Temperature Control

Dc/Dc Temperature Control

WARNING: This page is about a different variant/trim than selected.

The DC/DC  is cooled by the DC/DC  electric cooling fan. Operation of the DC/DC  electric cooling fan is controlled by the DC/DC  . The DC/DC  has temperature sensors within the housing to monitor the internal temperatures. The DC/DC  reports the internal temperature data to the PCM  . The signal is sent through the HS CAN  power mode zero systems bus.

The operation and speed of the DC/DC  electric cooling fan is determined by the PCM  , using internal temperature data and a computer model. Then the PCM  sends the fan speed control signal back to the DC/DC  . The DC/DC  generates a PWM to control the DC/DC  electric cooling fan speed. The lower DC/DC  housing is finned to increase the surface area for the air to cool the DC/DC  .

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