Diagnostic Test

Turn the ignition on.

With the scan tool, record and erase DTC's

Operate the Sunroof Switch in all positions several times.

Wait 30 seconds.

With the scan tool, read DTC's.

Does the scan tool display B2227-SUNROOF ECU INTERNAL? 

Yes 

1. Replace the Sunroof Motor/Module.
2. Perform the Sunroof Position Calibration, (Refer to ELECTRICAL/POWER TOP/MOTOR - STANDARD PROCEDURE - SUNROOF POSITION CALIBRATION) . Perform the Excessive Force Limitation Calibration, (Refer to ELECTRICAL/POWER TOP/MOTOR - STANDARD PROCEDURE - EXCESSIVE FORCE LIMITATION CALIBRATION) .
3. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1) .

No 

1. The conditions that caused this code to set are not present at this time. Operate the Sunroof several times and recheck for DTC's. If the code reappears now or later, replace the Sunroof Motor/Module.