DTC B1556: Extension Module Malfunction 2 [06/2018 - 11/2022]: Procedure
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- CHECK DTC
- Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
- Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK
No DTCs are output.
Result
Proceed to OK NG
Result:
OK
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
Result:
NG
REPLACE NAVIGATION ECU. Refer to REMOVAL [06/2018 - 03/2019] , or refer to REMOVAL [03/2019 - 11/2022]
- Clear the DTCs.