LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2009 >> Compass Limited, ED3, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 ((All Wheel Drive (AWD) Module - Electrical Diagnostics)) >> DTC Troubleshooting >> U0121-Lost Communication With Abs >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes 
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
CAN C BUS CIRCUITS OPEN OR SHORTED
ABS MODULE POWER AND GROUND
TOTALLY INTEGRATED POWER MODULE (TIPM) NOT CONFIGURED CORRECTLY
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
ALL WHEEL DRIVE (AWD) CONTROL MODULE
TOTALLY INTEGRATED POWER MODULE (TIPM)