For 1990-2009 cars only
Circuit Description
The instrument cluster internally monitors the AIR BAG indicator when power is applied to the instrument cluster. The cluster flashes the indicator seven times during the bulb test and checks the operation of the AIR BAG indicator.
Conditions for Setting the DTC
The instrument cluster detects a failure in the AIR BAG indicator during the bulb test. The cluster will only detect an open AIR BAG indicator.
Action Taken When the DTC Sets
| • | The instrument cluster stores DTC B0670 in memory. |
| • | The instrument cluster turns on the Service Vehicle Soon indicator. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used. |
| • | A history DTC will clear after 255 consecutive ignition cycles if the condition for the malfunction is no longer present. |
Diagnostic Aids
DTC B0670 is related to an internal malfunction of the instrument cluster. Attempt to clear the DTC using a scan tool. If the DTC cannot be cleared, replace the instrument cluster. Refer to Instrument Cluster Replacement .
