Toyota Sequoia (2005). Manual - part 362

H10600

H01012

H01070

H24042

Combination
Meter

Airbag
Sensor
Assembly

DTC B1661/44

DLC3

CG

TC

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1243

1437

6

Check airbag sensor assembly.

PREPARATION:
(a)

Turn the ignition switch to the LOCK position.

(b)

Disconnect the negative (–) terminal cable from the bat-
tery, and wait for at least 90 seconds.

(c)

Connect the connectors to the airbag sensor assembly
and the combination meter.

(d)

Connect the negative (–) terminal cable to the battery,
and wait for at least 2 seconds.

CHECK:
(a)

Turn the ignition switch to the ON position, and wait for at
least 60 seconds.

(b)

Clear the DTCs stored in memory (see page 

DI–1147

).

(c)

Turn the ignition switch to the LOCK position.

(d)

Turn the ignition switch to the ON position, and wait for at
least 60 seconds.

(e)

Check the DTCs (see page 

DI–1147

).

OK:

DTC B1661/44 is not output.

HINT:
Codes other than DTC B1661/44 may be output at this time, but
they are not related to this check.

NG

Replace airbag sensor assembly
(see page 

RS–82

).

HINT:
If the DTC B1661/44 is output after replacing the airbag sensor
assembly, there may be trouble in the combination meter.

OK

From the results of the above inspection, the malfunctioning part can now be considered normal
To make sure of this, use the simulation method to check (see page 

DI–1137

).

DI–1244

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1438

7

Check connection of connectors.

PREPARATION:
(a)

Turn the ignition switch to the LOCK position.

(b)

Disconnect the negative (–) terminal cable from the battery, and wait for at least 90 seconds.

CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the combination meter.
OK:

The connectors are connected securely.

NG

Connect connector, then go to step 1.

OK

8

Prepare for inspection.

PREPARATION:
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a)

Disconnect the connectors from the airbag sensor assembly.

(b)

Disconnect the connectors from the steering wheel pad.

(c)

Disconnect the connectors from the front passenger airbag assembly.

(d)

w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.

(e)

w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.

(f)

Disconnect the connectors from the front seat outer belt LH and RH.

NEXT

H01015

G27651

H23985

RMIL

Airbag
Sensor
Assembly

A

Cowl Wire

Combination
Meter

A20

B

C

D

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1245

1439

9

Check combination meter.

PREPARATION:
Connect the negative (–) terminal cable to the battery, and wait for at least 2 seconds.
CHECK:
Turn the ignition switch to the ON position, and check the RSCA OFF indicator condition.
OK:

The RSCA OFF indicator comes on when the RSCA OFF switch is ON.

NG

Go to combination meter system
(see page 

DI–1610

).

OK

10

Check cowl wire (short to ground).

PREPARATION:
(a)

Turn the ignition switch to the LOCK position.

(b)

DIsconnect the negative (–) terminal cable from the bat-
tery, and wait for at least 90 seconds.

(c)

Disconnect the connector from the combination meter.

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

A20–20 (RMIL) – 

Body ground

Always

1 M

Ω

 or higher

NG

Repair or replace cowl wire.

OK

H22564

H23040

I27704

H23986

Combination
Meter

C5–40

RMIL

A20

C6

A

B

C

D

Airbag
Sensor
Assembly

Cowl Wire

DI–1246

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1440

11

Check cowl wire (airbag sensor assembly – combination meter).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

A20–20 (RMIL) – C5–40

Always

Below 1 

Ω

NG

Repair or replace cowl wire.

OK

Replace airbag sensor assembly (see page 

RS–82

).