Navigator 2WD V8-5.4L (2007)
The fault chart describes the specific MS-CAN network failures and their resulting symptom:
HS-CAN
The HS-CAN is a high speed communication network that uses an unshielded twisted pair cable of data (+) and data (-) circuits. The data (+) and the
data (-) circuits are each regulated to approximately 2.5 volts during neutral or rested network traffic. As bus messages are sent on the data (+)
circuit, voltage is increased by approximately 1.0 volt. Inversely, the data (-) circuit is reduced by approximately 1.0 volt when a bus message is
sent. Multiple bus messages can be sent over the network CAN circuits allowing multiple modules to communicate with each other. The HS-CAN
network will not communicate while certain faults are present, but will operate with diminished performance with other faults present. The HS-CAN
bus may remain operational when 1 of the 2 termination resistors are not present.
The HS-CAN network operates at a maximum data transfer speed of 500 Kbps and is designed for real time information transfer and control. The
network will remain operational, but at a degraded level when certain circuit faults are present. The HS-CAN network may remain operational with
only one termination resistor present.
The following modules are on the HS-CAN network:
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Powertrain control module (PCM)
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Anti-lock brake system (ABS) module
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Restraints control module (RCM)
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Instrument cluster
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Transmission control module (TCM)
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Four wheel drive (4WD) control module (if equipped)
-
Air suspension module (if equipped)
HS-CAN Network Communication Fault Chart
The fault chart describes the specific HS-CAN network failures and their resulting symptom:
