Toyota Sequoia (2005). Manual — part 422
H23040
E2
E1
A20
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1483
1677
3
Check wire harness (airbag sensor assembly – body 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.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
A20–25 (E1) –
Body ground
Always
Below 1
Ω
A20–26 (E2) –
Body ground
Always
Below 1
Ω
NG
Repair or replace wire harness.
OK
DI–1484
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1678
4
Check SRS warning light.
PREPARATION:
(a)
Connect the connectors to the airbag sensor assembly.
(b)
Connect the connectors to the steering wheel pad.
(c)
Connect the connectors to the front passenger airbag assembly.
(d)
w/ Side and curtain shield airbag:
Connect the connectors to the side airbag assembly LH and RH.
(e)
w/ Side and curtain shield airbag:
Connect the connectors to the curtain shield airbag assembly LH and RH.
(f)
Connect the connectors to the front seat outer belt LH and RH.
(g)
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 6 seconds.
(b)
Operate all components of the electrical system (defogger, wiper, headlight, heater blower, etc.) and
check the SRS warning light operation.
OK:
The SRS warning light does not come on.
NG
Replace airbag sensor assembly
(see page
).
OK
END
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1485
1679
Trouble in Indicator of Passenger Airbag ON/OFF Indicator
CIRCUIT DESCRIPTION
The occupant classification system detects the front passenger seat condition. It then informs a passenger
of the front passenger airbag assembly condition (activated/not activated) by the passenger airbag ON/OFF
indicator.
The table below shows the normal indication condition of the passenger airbag ON/OFF indicator and the
front passenger seat condition.
Front passenger seat condition
ON Indicator
OFF Indicator
Adult is seated.
ON
OFF
Child is seated.
OFF
ON
Vacant
OFF
OFF
Occupant classification system
failure
OFF
ON
INSPECTION PROCEDURE
1
Check SRS warning light.
CHECK:
Turn the ignition switch to the ON position, and check the SRS warning light condition.
HINT:
If this trouble occurs, the SRS warning light is off. If it is on, a DTC is output. Troubleshoot for the output DTC.
OK:
The SRS warning light does not come on.
NG
OK
DIDHT–01
DI–1486
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1680
2
Check passenger airbag ON/OFF indicator condition.
PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check if the passenger airbag ON/OFF indicator correctly indicates the front passenger seat condition.
OK:
Front passenger seat condition
ON Indicator
OFF Indicator
Adult is seated.
ON
OFF
Child is seated.
OFF
ON
Vacant
OFF
OFF
Occupant classification system
failure
OFF
ON
NG
Go to step 3.
OK
END
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