Doors, Hood and Trunk Diagnosis

Door Control Module Schematics:

DTC B1982 Source/Battery Voltage High:

CIRCUIT DESCRIPTION
The battery positive voltage (B+) is supplied to the Driver Door Module (DDM) at the DDM connector C1 terminal 11, CKT 1540 (ORN). The DDM monitors this voltage to determine if the voltage is within a valid operating range.

CONDITIONS FOR SETTING THE DTC
The battery positive voltage (B+) exceeds 15.5 V for more than 1 second.

ACTION TAKEN WHEN THE DTC SETS
^ DTC B1982 is stored in the DDM memory.
^ The DDM will not respond to any manual or memory inputs when the voltage is greater than 16 V.
^ No driver warning message is displayed for this DTC.
^ The DDM switch failure and position sensor failure DTCs will not set while DTC B1982 is current.

CONDITIONS FOR CLEARING THE DTC
^ The B+ voltage falls below 15 volts for approximately 1.2 seconds.
^ The history DTC will clear after 50 ignition cycles.
^ Use a scan tool in order to clear the history DTC.

DIAGNOSTIC AIDS
This DTC may set when the vehicle is placed on a battery charger set to FAST CHARGE for a long period of time.

TEST DESCRIPTION
The number(s) below refer to the step number(s) on the diagnostic table.
1. Perform the power door diagnostic system check before diagnosing DTC B1982.
2. This verifies that the DTC was not incorrectly set.
3. This determines whether the malfunction is in the charging system or the DDM.
5. Clear any DTCs after completing the repair procedure.