Left Rear Door Module
B210B - System Voltage High
For a complete wiring diagram, refer to.
• When Monitored: At all times.
• Set Condition: This code is a Bus message that the system input voltage of the vehicle is, or was, above 16 volts for over 15 seconds.
Test Step 1 - CHECK ENGINE DTCs
• With the scan tool, read the active ENGINE DTCs.
Are there any BATTERY OR CHARGING SYSTEM DTCs present?
Yes
• Perform the appropriate diagnostic procedure.
No
• This code is a Bus message for information only. Check the charging system in accordance with the Service Information.