Check Point
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- 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.
W/ HEADUP DISPLAY SYSTEM:
| 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) |
Meter Mirror Sub-assembly (Headup Display) |
||
| 1 | B1321-87 | U11D0-87 U11D1-87 U11D3-87 (Simultaneously output) |
B1321-87 | Short in the Circuit
Open in the Circuit
|
| 2 | B1321-87 | U11D0-87 | Not output |
|
| 3 | B1321-87 | Not output | B1321-87 |
|
| 4 | B1321-87 | Not output | Not output | Combination meter assembly |
W/O HEADUP DISPLAY SYSTEM:
| DTC Output Pattern | DTC Output Part Name (Display on GTS) |
Suspected Area | |
|---|---|---|---|
| Combination Meter Assembly (Combination Meter) |
Radio and Display Receiver Assembly (Navigation System) |
||
| 1 | B1321-87 | U11D0-87 U11D3-87 (Simultaneously output) |
|
| 2 | B1321-87 | Not output |
|