Toyota Tundra Service Manual: 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

1.

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.

A

REPLACE AIRBAG SENSOR ASSEMBLY

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

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

    Front Airbag Sensor (RH) (B1610)

    See More:

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