DTC B1900/73: Short in Front Pretensioner Squib RH Circuit; DTC B1901/73: Open in Front Pretensioner Squib RH Circuit; DTC B1902/73: Short to GND in Front Pretensioner Squib RH Circuit; DTC B1903/73: Short to B+ in Front Pretensioner Squib RH Circuit: Description

The front pretensioner squib RH circuit consists of the airbag ECU assembly and front seat outer belt assembly RH.

The airbag ECU assembly uses this circuit to deploy the seat belt pretensioner when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front pretensioner squib RH circuit.

DTC No.	DTC Detection Condition	Trouble Area
B1900/73	The airbag ECU assembly receives a line short circuit signal in the front pretensioner squib RH circuit during primary check. Front pretensioner squib RH malfunction Airbag ECU assembly malfunction	No. 2 floor wire Front seat outer belt assembly RH (Front pretensioner squib RH) Airbag ECU assembly
B1901/73	The airbag ECU assembly receives an open circuit signal in the front pretensioner squib RH circuit. Front pretensioner squib RH malfunction Airbag ECU assembly malfunction
B1902/73	The airbag ECU assembly receives a short circuit to ground signal in the front pretensioner squib RH circuit. Front pretensioner squib RH malfunction Airbag ECU assembly malfunction
B1903/73	The airbag ECU assembly receives a short circuit to B+ signal in the front pretensioner squib RH circuit. Front pretensioner squib RH malfunction Airbag ECU assembly malfunction