These DTCs are stored when a malfunction occurs in the Navigation ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B1556 | Extension Module Malfunction 2 | When any of the following conditions is met:
·
Internal power supply malfunction ·
Internal hard drive malfunction ·
EEPROM error ·
Storage malfunction |
Navigation ECU |
When replacing the navigation ECU, always replace it with a new one. If a navigation ECU which was installed to another vehicle is used, the following may occur:
A communication malfunction DTC may be stored.
The navigation ECU may not operate normally.
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Clear the DTCs.
Recheck for DTCs and check that no DTCs are output.
No DTCs are output.
| Proceed to |
|---|
| OK |
| NG |
OK
NG