DTC B1810/53: Short in Driver Side Squib 2nd Step Circuit; DTC B1811/53: Open in Driver Side Squib 2nd Step Circuit; DTC B1812/53: Short to GND in Driver Side Squib 2nd Step Circuit; DTC B1813/53: Short to B+ in Driver Side Squib 2nd Step Circuit: Description

The driver side squib 2nd step circuit consists of the airbag ECU assembly, spiral cable with sensor 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 side squib 2nd step circuit.

DTC No.	DTC Detection Condition	Trouble Area
B1810/53	The airbag ECU assembly receives a line short circuit signal in the driver side squib 2nd step circuit during primary check. Spiral cable with sensor sub-assembly malfunction Driver side squib 2nd step malfunction Airbag ECU assembly malfunction	Instrument panel wire Spiral cable with sensor sub-assembly Horn button assembly (Driver side squib 2nd step) Airbag ECU assembly
B1811/53	The airbag ECU assembly receives an open circuit signal in the driver side squib 2nd step circuit. Spiral cable with sensor sub-assembly malfunction Driver side squib 2nd step malfunction Airbag ECU assembly malfunction
B1812/53	The airbag ECU assembly receives a short circuit to ground signal in the driver side squib 2nd step circuit. Spiral cable with sensor sub-assembly malfunction Driver side squib 2nd step malfunction Airbag ECU assembly malfunction
B1813/53	The airbag ECU assembly receives a short circuit to B+ signal in the driver side squib 2nd step circuit. Spiral cable with sensor sub-assembly malfunction Driver side squib 2nd step malfunction Airbag ECU assembly malfunction