Circuit Description
The instrument cluster performs an internal test to determine the integrity of its operation.
Conditions for Setting the DTC
The instrument cluster is unsuccessful at verifying its operation.
Action Taken When the DTC Sets
| • | The instrument cluster stores DTC B1000 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 DTC B1000 is an internal instrument cluster malfunction, the instrument cluster will need to be replaced.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Always perform the instrument cluster diagnostic system check before attempting to diagnose this DTC.
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This diagnostic procedure requires using a scan tool.
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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 | ||
Using a scan tool clear the instrument cluster DTC and recheck for DTC B1000. Does DTC B1000 reset? | -- | Go to Step 3 | Go to A Powertrain On Board Diagnostic (OBD) System Check (RPO 3.5L) or A Powertrain On Board Diagnostic (OBD) System Check (RPO 3.8L) | |
Replace the instrument cluster. Refer to Instrument Cluster Replacement for service procedure. Is the repair complete? | -- | System OK |
