LEMON Manuals
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Electronic Control Modules - Electrical Diagnostics
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Electronic Control Modules - Electrical Diagnostics
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DTC Troubleshooting
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U0121-Lost Communication With Anti-Lock Brake Module
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Possible Causes
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Possible Causes
Possible Causes
CAN B OR CAN C BUS CIRCUITS OPEN OR SHORTED
DTC'S RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TIPM NOT CONFIGURED CORRECTLY
ANTILOCK BRAKE MODULE POWER AND GROUND
ANTILOCK BRAKE MODULE
MODULE THAT SET THIS DTC