VUE AWD V6-3.5L VIN 4 (2004)
Diagnostic Trouble Codes
DTC U1000 and U1255
Circuit/System Description
Modules connected to the Class 2 serial data circuit monitor for serial data communications during normal vehicle operation.
Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the
module records the identification number of the module which sent the message for State of Health monitoring. A critical operating parameter is one
which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number
with at least one critical parameter within 5 seconds of beginning serial data communication, DTC U1000 or U1255 DTC is set. When more than one
critical parameter does not have an identification number associated with it, the DTC will only be reported once.
The Class 2 serial data communications circuit on this vehicle are in a hybrid ring and star configuration. Each module on the ring has 2 serial data
circuits connected to it, except the following modules which have only 1 serial data circuit connected them:
