DTC B1900/73 Short in Front Driver Side Pretensioner Squib Circuit; DTC B1901/73 Open in Front Driver Side Pretensioner Squib Circuit; DTC B1902/73 Short to GND in Front Driver Side Pretensioner Squib Circuit; DTC B1903/73 Short to B+ in Front Driver Side Pretensioner Squib Circuit: Description
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
The driver side front pretensioner squib circuit consists of the center airbag sensor assembly and the front seat outer belt assembly LH.
This circuit signals the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the driver side front pretensioner squib circuit.
DIAGNOSTIC TROUBLE CODE CHART
| DTC No. |
DTC Detection Condition |
Trouble Area |
| B1900/73 |
- Center airbag sensor assembly detects line short circuit signal in driver side front pretensioner squib circuit 5 times during primary check.
- Driver side front pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- Floor wire
- Front seat outer belt assembly LH (Driver side front pretensioner squib)
- Center airbag sensor assembly
|
| B1901/73 |
- Center airbag sensor assembly detects open circuit signal in driver side front pretensioner squib circuit for 2 seconds.
- Driver side front pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- Floor wire
- Front seat outer belt assembly LH (Driver side front pretensioner squib)
- Center airbag sensor assembly
|
| B1902/73 |
- Center airbag sensor assembly detects short circuit to ground signal in driver side front pretensioner squib circuit for 0.5 seconds.
- Driver side front pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- Floor wire
- Front seat outer belt assembly LH (Driver side front pretensioner squib)
- Center airbag sensor assembly
|
| B1903/73 |
- Center airbag sensor assembly detects short circuit to B+ signal in driver side front pretensioner squib circuit for 0.5 seconds.
- Driver side front pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- Floor wire
- Front seat outer belt assembly LH (Driver side front pretensioner squib)
- Center airbag sensor assembly
|