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 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
The front driver side pretensioner squib circuit consists of the center airbag sensor assembly and the front seat outer belt assembly LH
This circuit instructs SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the front driver side pretensioner squib circuit.
DTC DETECTION CONDITION CHART
| DTC No. |
DTC Detection Condition |
Trouble Area |
| B1900/73 |
- The center airbag sensor assembly receives a line short circuit signal 5 times in the front driver side pretensioner squib circuit during primary check
- Front driver side pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- No 2 floor wire
- Front seat outer belt assembly LH (Front driver side pretensioner squib)
- Center airbag sensor assembly
|
| B1901/73 |
- The center airbag sensor assembly receives an open circuit signal in the front driver side pretensioner squib circuit for 2 seconds
- Front driver side pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- No 2 floor wire
- Front seat outer belt assembly LH (Front driver side pretensioner squib)
- Center airbag sensor assembly
|
| B1902/73 |
- The center airbag sensor assembly receives a short circuit to ground signal in the front driver side pretensioner squib circuit for 0 5 seconds
- Front driver side pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- No 2 floor wire
- Front seat outer belt assembly LH (Front driver side pretensioner squib)
- Center airbag sensor assembly
|
| B1903/73 |
- The center airbag sensor assembly receives a short circuit to B+ signal in the front driver side pretensioner squib circuit for 0 5 seconds
- Front driver side pretensioner squib malfunction
- Center airbag sensor assembly malfunction
|
- No 2 floor wire
- Front seat outer belt assembly LH (Front driver side pretensioner squib)
- Center airbag sensor assembly
|