DTC B1860: Short in Knee Airbag (D Side) Squib Circuit; DTC B1861: Open in Knee Airbag (D Side) Squib Circuit; DTC B1862: Short in Knee Airbag (D Side) Squib Circuit (to Ground); DTC B1863: Short in Knee Airbag (D Side) Squib Circuit (to +B) [10/2018 - ]: Description

The driver side knee airbag squib circuit consists of the airbag ECU assembly and lower No. 1 instrument panel airbag 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 knee airbag squib circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1860	Short in Knee Airbag (D Side) Squib Circuit	The airbag ECU assembly detects a line short in the driver side knee airbag squib during the primary check. Driver side knee airbag squib malfunction Airbag ECU assembly malfunction	Instrument panel wire Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly) Airbag ECU assembly	Comes on	Applies to check mode
B1861	Open in Knee Airbag (D Side) Squib Circuit	The airbag ECU assembly detects an open in the driver side knee airbag squib. Driver side knee airbag squib malfunction Airbag ECU assembly malfunction	Instrument panel wire Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly) Airbag ECU assembly	Comes on	Applies to check mode
B1862	Short in Knee Airbag (D Side) Squib Circuit (to Ground)	The airbag ECU assembly detects a short to ground in the driver side knee airbag squib. Driver side knee airbag squib malfunction Airbag ECU assembly malfunction	Instrument panel wire Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly) Airbag ECU assembly	Comes on	Applies to check mode
B1863	Short in Knee Airbag (D Side) Squib Circuit (to +B)	The airbag ECU assembly detects a short to B+ in the driver side knee airbag squib. Driver side knee airbag squib malfunction Airbag ECU assembly malfunction	Instrument panel wire Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly) Airbag ECU assembly	Comes on	Applies to check mode

DTC DETECTION CONDITIONS (B1860)

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	Ignition switch ON	◦	◦	◦
Malfunction Status	The airbag ECU assembly detects a line short in the driver side knee airbag squib circuit during the primary check	◦	-	-
	Driver side knee airbag squib malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

DTC DETECTION CONDITIONS (B1861)

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	Ignition switch ON	◦	◦	◦
Malfunction Status	The airbag ECU assembly detects an open in the driver side knee airbag squib circuit	◦	-	-
	Driver side knee airbag squib malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

DTC DETECTION CONDITIONS (B1862)

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	Ignition switch ON	◦	◦	◦
Malfunction Status	The airbag ECU assembly detects a short to ground in the driver side knee airbag squib circuit	◦	-	-
	Driver side knee airbag squib malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

DTC DETECTION CONDITIONS (B1863)

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3
Diagnosis Condition	Ignition switch ON	◦	◦	◦
Malfunction Status	The airbag ECU assembly detects a short to B+ in the driver side knee airbag squib circuit	◦	-	-
	Driver side knee airbag squib malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.