DTC B1652 Loss of Keep Alive Memory (KAM). Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 DTC 🢒 DTC B1652 Loss of Keep Alive Memory (KAM)

Circuit Description

DTC B1652 indicates that the KAM in the instrument cluster is reset. The KAM in the instrument cluster normally resets whenever power or ground removes from the instrument cluster. DTC B1652 sets when the battery is disconnected and reconnected, for example.

Conditions for Setting the DTC

The DTC sets under the following conditions:

•	Power or ground is disconnected from the instrument cluster.

•	Power or ground is reconnected to the instrument cluster.

Action Taken When the DTC Sets

When the DTC sets, the following actions occur:

•	The instrument cluster KAM data (trip odometer) is reset to an initial value and the Average Fuel Economy.

•	Fuel Used display values are reset to zero.

Diagnostic Aids

If DTC B1652 sets without a battery disconnect, ensure that good terminal contacts exist at terminal B3 (battery positive voltage) and at terminal A12 (ground). If the power and ground inputs are OK, replace the instrument cluster.