B1983

DTC B1983

CIRCUIT DESCRIPTION
The body control module (BCM), driver door module (DDM) and memory seat module (MSM) have an internal voltage sensor that checks the input voltage to determine if it is between 9 - 15.5 volts.

The instrument panel cluster (IPC) and heating control module (HCM) receive a class 2 message from the BCM notifying these modules of low system voltage.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B1983 Right Front/Passenger Seat Front Up Switch Circuit High

CONDITIONS FOR SETTING THE DTC
The DTC B1983 sets when the battery voltage falls below 9 volts.

ACTION TAKEN WHEN THE DTC SETS
The module stores DTC B1983 as current.

CONDITIONS FOR CLEARING THE DTC
In order to clear the DTC from a current status the voltage shall be greater than 9.5 volts for 1.2 seconds.

DIAGNOSTIC AIDS

IMPORTANT: If DTC B1982 is set as current in the IPC or HCM use the table to diagnose the failure in the BCM.

TEST DESCRIPTION

Steps 1 - 9:

The numbers below refer to the step numbers on the diagnostic table.
3. Tests for the proper operation of the complete circuit.
4. Tests for the proper operation of the battery positive voltage circuit.