External Disc Module

B21DD-85-SYSTEM VOLTAGE-SIGNAL ABOVE ALLOWABLE RANGE

For a complete wiring diagram, refer to the Wiring Information.






- When Monitored:
At all times.

- Set Condition:
This is a Controller Area Network (CAN) message that the system voltage was above 18.4 volts for over 10 seconds.





Diagnostic Test
CHECK ENGINE DTCs
1. With the scan tool, read Powertrain Control Module DTCs

Are there any Charging or Battery DTCs present?

Yes

- A L L Diagnostic Trouble Codes ( DTC ) and perform the active charging system or battery DTC diagnostic procedure.

No

- This code is a CAN system message for information only. Check the charging system.