Mariner 2WD L4-2.5L (2009)
Auxiliary Power Outlet: Initial Inspection and Diagnostic Overview
Special Tools Used With Diagnostics
High-Voltage Converter/Inverter
Principles Of Operation
High-Voltage Converter/Inverter
Principles of Operation
DC/AC Inverter and AC Power Point
The DC/AC inverter converts 12 volts DC to 110 volts AC to power a device that uses AC current with a rating of less than 150 watts. The 110 volts AC
created by the inverter will measure differently than a conventional AC outlet (utility-generated) with some multi-meters. The power point will
automatically shut off if the load exceeds 150 watts. This prevents damage to the inverter or load. The inverter supplies 110 volts AC power only when
the key is in the ON/START position. This reduces the draw on the 12-volt system when the vehicle is not running. The DC/AC inverter outlet (AC
power point) is equipped with a green LED that indicates the system integrity. The green LED illuminates continuously when the key is in the
ON/START position and the system is operating normally. The green LED flashes constantly if the key is in the ON/START position and a fault is
detected. Short circuits, overloads or overheating of the inverter will cause the green LED to flash and the power to be cut off to the outlet. If the LED is
flashing, the problem must be corrected (short circuit or excessive load). If the inverter is overheated, it must be allowed time to cool off (without the
load connected). Refer to Owner's Literature for a list of appropriate electrical loads/devices that can be used.
DC/DC Converter
The DC/DC converter is a liquid-cooled component that converts high voltage (216-397 volts) DC power to low voltage (12 volts) DC power, while
maintaining electrical isolation between the 2 DC power systems. The converter steps down the high voltage to 12 volts, providing power to the vehicle
low voltage battery systems. The PCM controls the operation of the DC/DC converter through an enable input from the PCM to the DC/DC converter.
Inspection And Verification
High-Voltage Converter/Inverter
Inspection and Verification
WARNING: When servicing the high-voltage system, establish a buffer zone per the specified procedure. Failure to follow this instruction may
result in serious personal injury or death.
WARNING: Depower the high-voltage traction battery (HVTB) before carrying out any removal or installation procedures affecting the
high-voltage battery system. Failure to follow this instruction may result in serious personal injury or death.