B210E: Diagnosis and Testing

B210E - Battery Voltage High

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON.

• Set Condition: Battery voltage greater than 16 volts for approximately five to six seconds.






Test Step 1 - Test for Powertrain Control Modules DTCs

• Make sure the battery is in good condition. Using the Midtronics Battery Tester, test the battery before continuing.

• Inspect the vehicle for after market accessories that may exceed the generator system output.

• Make sure the generator drive belt is in good operating condition.

• Inspect the fuses in the totally integrated power module. If an open fuse is found, use the wire diagram/schematic as a guide, inspect the wiring and connectors for damage.

• Turn the ignition ON.

• With the scan tool, check for active PCM DTCs.

Does the scan tool display any active PCM DTCs?

Yes

• Perform the appropriate powertrain diagnostic procedure.

No

• Test for the above conditions that can cause a high voltage condition. Repair as necessary.

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