C1 Check Recent Vehicle History

C1 CHECK RECENT VEHICLE HISTORY

- The most likely cause for DTC B1317 is jump starting the vehicle with a 24 volt system used on many towing rigs.

Has the vehicle been jump-started by a towing service within the past two weeks?

> Yes
STOP. Repair is complete.

> No
Go to Pinpoint Test C2. C2 Measure Voltage at Pin 20