The main body ECU (multiplex network body ECU) controls the vehicle power door lock control system functions. Power door lock control system data and Diagnostic Trouble Code (DTC) can be read through the vehicle Data Link Connector 3 (DLC3).
When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.
Check the DLC3 Click here.
INSPECT AUXILIARY BATTERY VOLTAGE
Measure the auxiliary battery voltage with the power switch off.
If the voltage is below 11 V, recharge or replace the auxiliary battery.