Possible Causes
WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
| ENGINE BRAKE DTCS PRESENT |
| K321 BTSI CONTROL CIRCUIT SHORT TO GROUND |
| K321 BTSI CONTROL CIRCUIT OPEN |
| K321 BTSI CONTROL CIRCUIT SHORT TO VOLTAGE |
| WIRELESS CONTROL MODULE (WCM) |
Perform NAG1 PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .