Instrument Cluster

B21DD-84-SYSTEM VOLTAGE-SIGNAL BELOW 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 battery voltage was below 7.3 volts for over 10 seconds.





Diagnostic Test
CHECK POWERTRAIN CONTROL MODULE (PCM) DTCs
1. With the scan tool, read PCM DTCs.

Are there any PCM Charging or Battery DTCs present?

Yes

- A L L Diagnostic Trouble Codes ( DTC ) and perform the appropriate diagnostic procedure.

No

- This code is for information only. At some time there was a low battery system voltage. Check the battery and charging system.