B1328

DTC B1328

Circuit Description

The dash integration module (DIM) has an internal voltage sensor with a dedicated circuit that checks the battery positive voltage and battery negative circuit voltage to determine if it is below 15.5 volts.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1328 Device Power Circuit High

Conditions for Running the DTC

This DTC shall run only if the DIM has power, ground and the ignition is not in START mode. This DTC shall execute regardless of the battery voltage, except when the DTC B1390 is set current.

Conditions for Setting the DTC

This DTC shall be set as current when the voltage raises above 16.5 volts for 1200 milliseconds.

Action Taken When the DTC Sets

A message shall be sent out on the class 2 lines to notify the SIR of high battery voltage.

Conditions for Clearing the MIL/DTC

In order to clear the DTC from a current status the voltage shall be less than 15.5 volts for 1200 milliseconds.

Test Description

Step 1 - Step 6:

The number below refers to the step number on the diagnostic table.
3. Compares battery voltage with the voltage that the DIM calculates.