SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): B1160-B1167; Airbag ECU Malfunction1; 2019 - 2022 MY Avalon HV [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001AR7O
Model Year Start: 2019	Model: Avalon HV	Prod Date Range: [04/2018 - ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): B1160-B1167; Airbag ECU Malfunction1; 2019 - 2022 MY Avalon HV [04/2018 - ]

DTC

B1160

Airbag ECU Malfunction1

DTC

B1161

Airbag ECU Malfunction2

DTC

B1162

Airbag ECU Malfunction3

DTC

B1163

Airbag ECU Malfunction4

DTC

B1164

Airbag ECU Malfunction5

DTC

B1165

Airbag ECU Malfunction6

DTC

B1166

Airbag ECU Malfunction7

DTC

B1167

Airbag ECU Malfunction8

DESCRIPTION

The airbag ECU assembly consists of the acceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.

If the airbag ECU assembly receives signals from the acceleration sensor and pressure sensor, it determines whether the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the airbag ECU assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1160	Airbag ECU Malfunction1	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1161	Airbag ECU Malfunction2	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1162	Airbag ECU Malfunction3	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1163	Airbag ECU Malfunction4	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1164	Airbag ECU Malfunction5	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1165	Airbag ECU Malfunction6	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1166	Airbag ECU Malfunction7	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode
B1167	Airbag ECU Malfunction8	Airbag ECU assembly malfunction	Airbag ECU assembly	Comes on	Does not apply to test/check mode

CAUTION / NOTICE / HINT

HINT:

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

PROCEDURE

CHECK DTC

(a) Turn the power switch on (IG), and wait for at least 60 seconds.

(b) Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes

NOTICE:

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

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

REPLACE AIRBAG ECU ASSEMBLY

GO TO DIAGNOSTIC TROUBLE CODE CHART