Direct Current To Direct Current Converter (G2391071): Description: Dc/Dc

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The DC/DC  is located in the DC/DC  housing. The DC/DC  is secured on 3 studs to the lower DC/DC  housing with 3 nuts.

The DC/DC  is supplied with power from the MHEV  battery. The DC/DC  converts the MHEV  battery voltage from approximately 48V DC to the 12V DC for the following:

• All the vehicles 12V systems.
• The startup battery.

The output from the DC/DC  charges the startup battery and provides all the electrical power for all the 12V components. The output from the DC/DC  is approximately 14V.

The DC/DC  supplies all the power for the startup battery. The DC/DC  power for all the vehicle 12V systems in all Power Modes except in Power Mode 0 (vehicle locked and armed).

For additional information, Refer to: STARTUP BATTERY AND CABLES - INGENIUM I6 3.0L PETROL

The DC/DC  has 4 electrical connections for the following:

• MHEV  battery cable terminal from the MHEV  battery junction box.
  • For additional information, Refer to: STARTUP BATTERY AND CABLES - INGENIUM I6 3.0L PETROL
• Ground cable terminal from the MHEV  battery junction box.
  • For additional information, Refer to: STARTUP BATTERY AND CABLES - INGENIUM I6 3.0L PETROL
• The 12V DC output to the BJB for the startup battery and the vehicle 12V systems.
  • For additional information, Refer to: STARTUP BATTERY AND CABLES - INGENIUM I6 3.0L PETROL
• Wiring harness connector with 10-pin connections for the following:
  • Power supply from the Body Control Module (BCM)/Gateway Control Module (GWM).
  • Power supply to the DC/DC  electric cooling fan.
  • Ground for the DC/DC  electric cooling fan.
  • Pulse Width Modulation (PWM) signal to the DC/DC  electric cooling fan.
  • High Speed (HS) Controller Area Network (CAN) power mode zero systems bus (quantity 2).
  • A ground connection.

The DC/DC  controls the DC/DC  electric cooling fan with a PWM signal.