Navigator 2WD V8-5.4L (2007)
E3-E4
Normal Operation
The 4WD control module communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04 (WH/BU)
HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the network connection to the 4WD control module. The 4WD control module shares the
HS-CAN with powertrain control module (PCM), the transmission control module (TCM), the anti-lock brake system (ABS) module, the restraints
control module (RCM), the air suspension module if equipped) and the instrument cluster. Voltage is supplied by circuits CBP35 (YE/GY), SBB35
BU/RD) and SBB43 (BU/RD). Ground is supplied by circuits GD123 (BK/GY) and GD133 (BK).
DTC U0102 or DTC U0114 - sets in a module which had attempted to communicate with the 4WD control module and failed.
Possible Causes
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Fuse
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Circuit CBP35 (YE/GY) open
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Circuit GD123 (BK/GY) open
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Circuit GD133 (BK) open
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Circuit SBB35 (BU/RD) open
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Circuit SBB43 (BU/RD) open
