DTC B1800/51: Short in Driver Side Squib Circuit; DTC B1801/51: Open in Driver Side Squib Circuit; DTC B1802/51: Short to GND in Driver Side Squib Circuit; DTC B1803/51: Short to B+ in Driver Side Squib Circuit: Description

The driver side squib circuit consists of the airbag ECU assembly, spiral cable with sensor sub-assembly and horn button assembly.
The circuit instructs SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the driver side squib circuit.

DTC No.	DTC Detection Condition	Trouble Area
B1800/51	The airbag ECU assembly receives a line short circuit signal in the driver side squib circuit during primary check. Driver side squib malfunction Spiral cable with sensor sub-assembly malfunction Airbag ECU assembly malfunction	Instrument panel wire Spiral cable with sensor sub-assembly Horn button assembly (Driver side squib) Airbag ECU assembly
B1801/51	The airbag ECU assembly receives an open circuit signal in the driver side squib circuit. Driver side squib malfunction Spiral cable with sensor sub-assembly malfunction Airbag ECU assembly malfunction
B1802/51	The airbag ECU assembly receives a short circuit to ground signal in the driver side squib circuit. Driver side squib malfunction Spiral cable with sensor sub-assembly malfunction Airbag ECU assembly malfunction
B1803/51	The airbag ECU assembly receives a short circuit to B+ signal in the driver side squib circuit. Driver side squib malfunction Spiral cable with sensor sub-assembly malfunction Airbag ECU assembly malfunction