DTC C191B: Rear Vehicle Speed Signal: Procedure

CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
1. Turn the power switch OFF.
2. Connect the Techstream to the DLC3.
3. Turn the power switch ON (READY) and the Techstream on.
4. Check that electronically controlled brake system DTCs are not output. Refer to DTC CHECK / CLEAR .
  OK
  
  DTC is not output.
NG → See step 3

OK → See step 2
REPLACE REAR ACTIVE STABILIZER CONTROL ECU. Refer to REMOVAL
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to DIAGNOSTIC TROUBLE CODE CHART