CTS-V V8-6.0L VIN U (2006)
-> The theft deterrent control module (VTD)
-> The TV antenna module
-> The vehicle communication interface module (VCIM)
3. The following DTCs may be retrieved with a history status, but are not the cause of the present condition.
-> U1300
-> U1301
-> U1305
6. A state of health DTC with a history status may be present along with a U1000 code having a current status. This indicates that the malfunction
occurred when the ignition was ON.
7. Data link connector terminals 2 and 5 provide the connection to the class 2 serial data circuit and the signal ground circuit respectively.
10. This step takes out from the class 2 bus the modules connected to splice pack SP300, except the SDM and the DIM.
11. This step takes out from the class 2 bus the modules connected to splice pack SP303, except the RIM.
13. This test isolates the class 2 serial data circuit between DLC and DIM.
18. This test localizes the class 2 serial data circuit of the suspected bus, that is shorted.
22. If there are no current DTCs that begin with a "U", the communication malfunction has been repaired.
23. The communication malfunction may have prevented diagnosis of the customer complaint.
