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Home >> Jeep >> 2009 >> Commander Sport, 4.7 P, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U1408-Implausible Brake Signal Received >> Possible Causes
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Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes 
FCM CAN BUS DTCS PRESENT
ABS DTCS PRESENT
TRANSMISSION CONTROL MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure