Possible Causes
WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. 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 IGNITION NODE (WIN) |
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure