DTC B1925: Short in Rear P/T Squib (LH) Circuit; DTC B1926: Open in Rear P/T Squib (LH) Circuit; DTC B1927: Short in Rear P/T Squib (LH) Circuit (to Ground); DTC B1928: Short in Rear P/T Squib (LH) Circuit (to +B) [10/2018 - ]: Description

The rear pretensioner squib LH circuit consists of the airbag ECU assembly and rear seat outer belt assembly LH.

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

These DTCs are stored when a malfunction is detected in the rear pretensioner squib LH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1925	Short in Rear P/T Squib (LH) Circuit	The airbag ECU assembly detects a line short in the rear pretensioner squib LH circuit during the primary check. Rear pretensioner squib LH malfunction Airbag ECU assembly malfunction	Floor wire Rear pretensioner squib LH (Rear seat outer belt assembly LH) Airbag ECU assembly	Comes on	Applies to check mode
B1926	Open in Rear P/T Squib (LH) Circuit	The airbag ECU assembly detects an open in the rear pretensioner squib LH circuit. Rear pretensioner squib LH malfunction Airbag ECU assembly malfunction	Floor wire Rear pretensioner squib LH (Rear seat outer belt assembly LH) Airbag ECU assembly	Comes on	Applies to check mode
B1927	Short in Rear P/T Squib (LH) Circuit (to Ground)	The airbag ECU assembly detects a short to ground in the rear pretensioner squib LH circuit. Rear pretensioner squib LH malfunction Airbag ECU assembly malfunction	Floor wire Rear pretensioner squib LH (Rear seat outer belt assembly LH) Airbag ECU assembly	Comes on	Applies to check mode
B1928	Short in Rear P/T Squib (LH) Circuit (to +B)	The airbag ECU assembly detects a short to B+ in the rear pretensioner squib LH circuit. Rear pretensioner squib LH malfunction Airbag ECU assembly malfunction	Floor wire Rear pretensioner squib LH (Rear seat outer belt assembly LH) Airbag ECU assembly	Comes on	Applies to check mode

DTC DETECTION CONDITIONS (B1925)

		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 rear pretensioner squib LH circuit during the primary check	◦	-	-
	Rear pretensioner squib LH malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

DTC DETECTION CONDITIONS (B1926)

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

DTC DETECTION CONDITIONS (B1927)

		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 rear pretensioner squib LH circuit	◦	-	-
	Rear pretensioner squib LH malfunction	-	◦	-
	Airbag ECU assembly malfunction	-	-	◦
Detection Time		-	-	-
Number of Trips		1 trip	1 trip	1 trip

DTC DETECTION CONDITIONS (B1928)

		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 rear pretensioner squib LH circuit	◦	-	-
	Rear pretensioner squib LH 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.