Check Point
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2025 Toyota GR Corolla, 2025 Toyota Corolla, 2024 Toyota GR Corolla, 2024 Toyota Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- When DTC B1321-87 is output from the combination meter assembly, other ECUs on the same detection circuit may simultaneously output the same DTC depending on the malfunctioning area.
- Depending on the combination of DTCs simultaneously output by each ECU, the malfunctioning area can be narrowed down. Refer to the following table for DTC combinations output by each ECU.
| DTC Output Pattern | DTC Output Part Name (Display on GTS) |
Malfunction Status/Suspected Area | |
|---|---|---|---|
| Combination Meter Assembly (Combination Meter) |
Radio and Display Receiver Assembly (Navigation System) |
||
| 1 | B1321-87 | U11D0-87 |
|
| 2 | B1321-87 | Not output |
|