Toyota Service Blog

PREPARATION:

Disconnect the engine room No. 2 wire harness connector on the airbag sensor assembly side.

Turn the ignition switch to ON.

For the connector (on the airbag sensor assembly side) between the front airbag sensor (RH) and the instrument panel wire harness, measure the voltage between body ground and each of +SR and -SR.

Voltage: Below 1 V

Repair or replace engine room No. 2 wire harness.

Front Airbag Instrument Panel Sensor (RH) Wire Harness

Airbag ^ Sensor Assembly

Airbag ^ Sensor Assembly

Engine Room No. 2 Wire Harness

H03354 H03362

H08349

PREPARATION:

Disconnect the engine room No. 2 wire harness connector on the airbag sensor assembly side.

CHECK:

For the connector (on the airbag sensor assembly side) between the front airbag sensor (RH) and the instrument panel wire harness, measure the resistance between body ground and each of +SR and -SR. OK:

Resistance: 1 Mil or Higher

Repair or replace engine room No. 2 wire harness.

H08348

B1159 Front Airbag Sensor

PREPARATION:

Disconnect the engine room No. 2 wire harness connector on the airbag sensor assembly side.

CHECK:

For the connector (on the airbag sensor assembly side) between the front airbag sensor (RH) and the instrument panel wire harness, measure the resistance between +SR and -SR. OK:

Resistance: 1 MQ or Higher

Repair or replace engine room No. 2 wire harness.

Repair or replace instrument panel wire harness.

Check engine room No. 2 wire harness.

Front Airbag Sensor (RH)

Engine Room No. 2 Wire Harness

Front Airbag Sensor (RH)

Engine Room No. 2 Wire Harness

HG3352

HG336G HG95G7

H08350

HG3352

HG336G HG95G7

H08350

PREPARATION:

(a) Disconnect the engine room No. 2 wire harness connector on the airbag sensor assembly side.

(b) Using a service wire, connect +SR and -SR of the connector (on the front airbag sensor (RH) side) between the instrument panel wire harness and the front airbag sensor (RH).

CHECK:

For the connector (on the airbag sensor assembly side) between the front airbag sensor (RH) and the instrument panel wire harness, measure the resistance between +SR and -SR. OK:

Resistance: Below 1 Q

Repair or replace engine room No. 2 wire harness.

Repair or replace instrument panel wire harness.

DI6PX-15

DTC

B1158/B1159/16

Front Airbag Sensor (LH) Malfunction

circuit description

The front airbag sensor (LH) circuit consists of the airbag sensor assembly and front airbag sensor (LH).

For details of the function of each component, see OPERATION on page RS-2.

DTC B1158/B1159/16 is recorded when malfunction is detected in the front airbag sensor (LH) circuit.

DTC No.

DTC Detecting Condition

Trouble Area

B1158/B1159/16

• Front airbag sensor (LH) malfunction

• Airbag sensor assembly

• Instrument panel wire harness

• Engine room main wire harness

wiring diagram

Front Airbag Sensor (LH)

Airbag Sensor Assembly

-SL6

1 BR

2 26 BR

Airbag Sensor Assembly

2 26 BR

(

\

+SL

-SL

V

y

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