U1096 Class II TXD - IPC

DTC U1096 Class II Txd Failure:

CIRCUIT DESCRIPTION
The oscillator is a device used in the instrument cluster to send and interpret data between the other components along the class II serial data line. Its major function is to send or receive the different binary (bytes) information between the instrument cluster and the other components within the vehicle. The oscillator will transmit binary information to other components and then expect to receive a binary message stating the information was received. After three attempts by the instrument cluster to transmit information and receive a confirmation have failed. a Diagnostic Trouble Code (DTC) U1096 will be set.

CONDITIONS FOR SETTING THE DTC
^ The oscillator is being disrupted by outside Radio Frequency (RF) interference.
^ Condition can occur at any anytime.

ACTION TAKEN WHEN THE DTC SETS
^ Stores a DTC U1096 in the instrument cluster memory.
^ SERVICE VEHICLE SOON will be displayed for this DTC.

CONDITIONS FOR CLEARING THE DTC
^ Under all fault conditions, the ignition must be cycled before this DTC can change from current to history.
^ A history DTC will clear after 100 drive cycles if the condition for the malfunction is no longer present.
^ Using a scan tool.

DIAGNOSTIC AIDS
The following conditions may cause a malfunction to occur:
^ RF interference induced into the class II serial data line.
^ Improperly installed aftermarket equipment.
^ Illegal tampering with the instrument cluster.

TEST DESCRIPTION
Numbers below refer to the step numbers on the diagnostic table.
1. Always perform the Instrument Cluster Diagnostic System Check before attempting to diagnose a DTC U1096.
2. This step involves checking for any device that may cause RF interference along the class II serial data line.
3. This repair procedure requires that the instrument cluster be replaced.
4. Always clear DTCs after a repair procedure is complete.