DTC B1890/71: Short in Rear Window Curtain Shield Airbag Squib Circuit; DTC B1891/71: Open in Rear Window Curtain Shield Airbag Squib Circuit; DTC B1892/71: Short to GND in Rear Window Curtain Shield Airbag Squib Circuit; DTC B1893/71: Short to B+ in Rear Window Curtain Shield Airbag Squib Circuit: Description
The rear window curtain squib circuit consists of the airbag ECU assembly and the rear window curtain shield airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the rear window curtain squib circuit.
| DTC No. |
DTC Detection Condition |
Trouble Area |
| B1890/71 |
- The airbag ECU assembly receives a line short circuit signal 5 times in the rear window curtain squib circuit during primary check.
- Rear window curtain squib malfunction
- Airbag ECU assembly malfunction
|
- Floor wire
- Rear window curtain shield airbag assembly (Rear window curtain squib)
- Airbag ECU assembly
|
| B1891/71 |
- The airbag ECU assembly receives an open circuit signal in the rear window curtain squib circuit for 2 seconds.
- Rear window curtain squib malfunction
- Airbag ECU assembly malfunction
|
| B1892/71 |
- The airbag ECU assembly receives a short circuit to ground signal in the rear window curtain squib circuit for 0.5 seconds.
- Rear window curtain squib malfunction
- Airbag ECU assembly malfunction
|
| B1893/71 |
- The airbag ECU assembly receives a short circuit to B+ signal in the rear window curtain squib circuit for 0.5 seconds.
- Rear window curtain squib malfunction
- Airbag ECU assembly malfunction
|