Amplifier

B210D - Battery Voltage Low

For a complete wiring diagram, refer to.

• When Monitored: With the ignition on.

• Set Condition: If the module detects that the battery voltage is less than 9.0 volts for 1 second.






Test Step 1 - Check for an Intermittent Condition

• Turn the ignition ON, then OFF, and then ON again.

• With the scan tool, read amplifier DTCs.

Does the scan tool display B210D - Battery Voltage Low?

Yes

• Go to Test Step 2.

No

• The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Check the Battery Voltage to the Amplifier

• With the scan tool in data display, read the amplifier battery voltage.

Is the battery voltage less than 9.0 volts?

Yes

• Go to Test Step 3.

No

• Replace the amplifier.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 3 - Check for Charging System Related DTCs in the Powertrain Control Module

• With the scan tool in ECU view, select PCM and check for any charging system related DTCs.

Does the scan tool display any charging system related DTCs?

Yes

• Diagnose and repair the DTCs. Refer to => Non-DTC Based Diagnostics.

No

• Replace the amplifier.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior