Circuit Description
The instrument cluster transmits data on the Class II serial data link. If the instrument cluster detects a short to B+ instead of its own transmitted message, this DTC will set.
Conditions for Setting the DTC
The instrument cluster detects a short to B+ in circuit 1036.
Action Taken When the DTC Sets
| • | The instrument cluster stores DTC U1301 in memory. |
| • | The SERVICE VEHICLE SOON indicator turns on. |
Conditions for Clearing the DTC
| • | Under all fault conditions, the ignition switch must be cycled from on to off, back to on before this DTC can change from current to history. |
| • | The instrument cluster detects its own transmitted message. |
| • | A history DTC will clear after 100 drive cycles if the condition for this DTC is no longer present. |
| • | Use a scan tool. |
Diagnostic Aids
The following conditions may cause an intermittent malfunction to occur:
| • | An intermittent short to B+ in circuit 1036 or circuit 1132. |
| • | The instrument cluster is shorted to B+ internally. |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Data Link Connector system check performed? | -- | Go to Data Link Communications System Check in Wiring Systems | |
2 | Was the instrument cluster diagnostic system check performed? | -- | ||
Does this DTC reset in the instrument cluster? | -- | |||
4 | Replace the instrument cluster. Refer to Instrument Cluster Replacement for service procedure. Is the repair complete? | -- | -- | |
5 | The malfunction is not present at this time. Refer to Diagnostic Aids for additional information regarding this DTC. | -- | -- | -- |
6 |
Are there any DTCs stored in the instrument cluster? | -- | System OK |
