QX56 AWD V8-5.6L (VK56DE) (2005)
TRAILER POWER SUPPLY OPERATION
The trailer power supply is controlled by the trailer tow relay 2.
When the ignition switch is in the ON or START position, power is supplied
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through 10 A fuse (No. 51, located in the IPDM E/R)
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through IPDM E/R terminal 16
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to trailer tow relay 2 terminal 1.
When energized, the trailer tow relay 2 supplies power
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through trailer tow relay 2 terminals 5 and 7
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to trailer connector terminal 5.