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DTC U150B: Column SW checksum error
 
 
 
 
TROUBLE JUDGMENT
The ETACS-ECU will set DTC U150B when abnormal signals are received from the column switch (column-ECU).
 
 
TROUBLESHOOTING HINTS
  • The column switch assembly may be defective.
 
 
DIAGNOSIS
Recheck for diagnostic trouble code.
Check again if the DTC is stored in the ETACS-ECU.
(1)
cautionTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
Connect scan tool MB991958. Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Erase the DTC.
(3) Turn the ignition switch to the "ON" position.
(4) Check if the DTC is stored.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC stored?
Replace the column switch assembly.
A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the column switch and the ETACS-ECU (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).