DTC B1800: Short in D Squib Circuit; DTC B1801: Open in D Squib Circuit; DTC B1802: Short in D Squib Circuit (to Ground); DTC B1803: Short in D Squib Circuit (to +B) [04/2018 -]: Description
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
The driver squib circuit consists of the airbag ECU assembly, spiral cable sub-assembly and horn button assembly.
The airbag ECU assembly uses this circuit to deploy the airbag when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the driver squib circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Test Mode / Check Mode |
|---|---|---|---|---|---|
| B1800 | Short in D Squib Circuit |
|
|
Comes on | Applies to check mode |
| B1801 | Open in D Squib Circuit |
|
|
Comes on | Applies to check mode |
| B1802 | Short in D Squib Circuit (to Ground) |
|
|
Comes on | Applies to check mode |
| B1803 | Short in D Squib Circuit (to +B) |
|
|
Comes on | Applies to check mode |