Code No. C2246
SAS calibration not completed
OPERATION
The clearance warning control unit sets diagnosis code No. C2246 when it receives a "Calibration incomplete
(neutral position not learned)" signal from the steering wheel sensor.
TROUBLE JUDGEMENT
The condition below is satisfied:
- The ECU receives the signal, which informs of an incomplete initialisation,
from the steering wheel sensor.
PROBABLE CAUSES
- Incomplete calibration of the steering wheel sensor
- Malfunction of steering wheel sensor (incorporated in column switch assembly)
- Malfunction of clearance warning control unit
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics.
Use the M.U.T.-III to diagnose the CAN bus lines.
Q.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (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 - On-vehicle service).
Q.
Has the calibration been completed successfully?
Go to Step 3.
Replace the column switch assembly (integrated with steering wheel sensor) (Refer
to ).
STEP 3. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the clearance warning control unit.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
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(3)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the clearance warning control unit (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).