Toyota Tundra Service Manual: Airbag ECU Malfunction1 (B1160-B1167)

Toyota Tundra Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / Airbag ECU Malfunction1 (B1160-B1167)

DESCRIPTION

The airbag sensor assembly consists of a deceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.

If the airbag sensor assembly receives signals from the deceleration sensor, it determines whether or not the SRS should be activated.

DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166, B1167 is stored when a malfunction is detected in the airbag sensor assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1160	Airbag ECU Malfunction1	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1161	Airbag ECU Malfunction2	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1162	Airbag ECU Malfunction3	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1163	Airbag ECU Malfunction4	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1164	Airbag ECU Malfunction5	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1165	Airbag ECU Malfunction6	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1166	Airbag ECU Malfunction7	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable
B1167	Airbag ECU Malfunction8	An airbag sensor assembly malfunction	Airbag sensor assembly	Comes on	Not applicable

CAUTION / NOTICE / HINT

HINT:

If a DTC (except B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167) is output at the same time as B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167, repair the malfunction from that DTC first.

PROCEDURE

CHECK DTC

(a) Check for DTCs.

Click here

Result	Proceed to
DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output	A
DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166, B1167 and other DTCs are output	B

NOTICE:

If only DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output, do not clear the DTCs. Replace the airbag sensor assembly.

HINT:

If any DTCs other than DTC DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 and B1167 are also output, troubleshoot those DTCs first.

REPLACE AIRBAG SENSOR ASSEMBLY

GO TO DIAGNOSTIC TROUBLE CODE CHART

Short in Passenger Side Airbag Variable Vent Hole Squib Circuit (B181A-B181D)

Front Airbag Sensor (RH) (B1610)

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Toyota Tundra Service Manual: Airbag ECU Malfunction1 (B1160-B1167)

Short in Passenger Side Airbag Variable Vent Hole Squib Circuit (B181A-B181D)

Front Airbag Sensor (RH) (B1610)

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