Left Front Door Module

B210A - System Voltage Low






For a complete wiring diagram, refer to.

• When Monitored: At all times.

• Set Condition: When the TIPM sends a message to the door module that the vehicle voltage is below 10.0 volts for over 15 seconds, this code will set.






Test Step 1 - Check Engine DTCs

• The most probable cause for this DTC in this module, is that the charging system or battery has failed causing a low vehicle system voltage.

• Ensure the battery is fully charged and serviceable before proceeding.

• With the scan tool, read the engine DTCs

Are there any engine charging or starting DTCs present?

Yes

• Perform the appropriate diagnostic procedure.

No

• Go to Test Step 2

Test Step 2 - Test for an Intermittent Condition

• With the scan tool, record and erase the DTCs

• Start the engine and run for two minutes.

• With the scan tool, check for DTCs.

Does the scan tool display B210A - System Voltage Low?

Yes

• Go to Test Step 3

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 3 - Check the Fused B+ Circuit For High Resistance

• Using the scan tool, read the battery voltage of the door module.

• Using the scan tool, read the battery voltage of the TIPM (Central Gateway).

Is the voltage within 1.0 volt of each module?

Yes

• Replace the door module.

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

No

• Go to Test Step 4

Test Step 4 - Check the Voltage At the Door Module Harness

• Turn the ignition OFF.

• Disconnect the door module C3 Harness connector.

• Turn the ignition ON.

• Using a voltmeter, measure the voltage between the fused B(+) circuit and the ground in the door module C3 connector.

Is the voltage within one volt of battery voltage?

No

• Repair the fused B(+) circuit for high resistance.

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

Yes

• Replace the door module.

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