[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > MULTI AROUND MONITOR > DIAGNOSIS CODE PROCEDURES > Code No.B254A Steering angle sensor fail
Code No.B254A Steering angle sensor fault
 
 
 
 
TROUBLE JUDGEMENT
When the camera-ECU receives any of the following unfeasible values from the steering wheel sensor, diagnosis code No.B254A will be set:
  • The steering wheel sensor cannot recognise any steering wheel angle for at least 2.5 seconds.
  • The ECU receives the signal, which informs of an internal malfunction or incomplete initialisation, from the steering wheel sensor for at least 2.5 seconds.
note"thunder" mark is displayed on the vehicle icon when diagnosis code No.B254A is set.
 
 
PROBABLE CAUSES
  • Malfunction of steering wheel sensor (column switch assembly)
  • The steering wheel sensor has not learned the neutral point of the steering wheel.
  • Malfunction of camera-ECU
  • Damaged harness wires and connectors
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics.
Use the M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. Check the steering wheel sensor.
Calibrate the steering wheel sensor (teach-in a neutral position). (Refer to GROUP 35C - Steering wheel sensor calibration )
Has the calibration been completed successfully?
Go to Step 3.
Replace the steering wheel sensor (column switch assembly).
 
STEP 3. M.U.T.-IIISE data list.
Using the camera-ECU service data, check the steering wheel status.
 
Item No.M.U.T.-IIISE displayCheck conditionNormal condition
7Steering wheel angleVehicle stopped (the steering wheel is in the neutral position)-6 to 6 deg
RunningNearly the same as the steering wheel operation angle <-720 to 720 deg>
Is the check result normal?
Go to Step 4.
Replace the steering wheel sensor (column switch assembly).
 
STEP 4. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the camera-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if diagnosis code is set.
Is the diagnosis code set?
Replace the camera-ECU (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).