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 link. Its major function is to send or receive the different binary (bytes) information between the instrument cluster and the other components within the vehicle. When the ignition switch is first turned on, the instrument cluster performs an internal test on the oscillator and can determine the integrity of its operation.
Conditions for Setting the DTC
| • | The instrument cluster is unsuccessful at verifying the oscillator's operation. |
| • | The oscillator is being disrupted by an outside radio frequency interference. Refer to Diagnostic Aids for more information. |
| • | Condition can occur at any time. |
Action Taken When the DTC Sets
| • | The instrument cluster stores DTC B0602 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. |
| • | A history DTC will clear after 100 drive cycles if the condition for this DTC is no longer present. |
| • | Using a scan tool. |
Diagnostic Aids
| • | Since the oscillator is not removable form the instrument cluster and DTC B0602 is an internal malfunction to the instrument cluster, there is no repair procedure for this malfunction and the instrument cluster will need to be replaced. |
| • | The following conditions may cause an intermittent malfunction to occur: |
| - | Radio Frequency (RF) interference induced into the Class II serial data link. |
| - | Improperly installed aftermarket equipment. |
| - | Illegal tampering with the instrument cluster. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
Always perform the instrument cluster diagnostic system check before attempting to diagnose this DTC.
-
This repair procedure requires instrument cluster replacement.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Was the instrument cluster diagnostic system check performed? | -- | Go to Step 2 | ||
Replace the instrument cluster. Refer to Instrument Cluster Replacement for service procedure. Is the repair complete? | -- | -- |
