Toyota Sequoia (2005). Manual — part 385
![](/vehicles/linovind/vere/fry/zbue.png)
H23821
SVC1
SVC2
SVC4
SVC3
O7
Occupant Classification ECU:
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1335
1529
2
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 occupant classification ECU and the occupant clas-
sification sensors.
OK:
The connectors are connected securely.
NG
Connect connectors, then go to step 1.
OK
3
Check seat wire No. 1 (short to B+).
PREPARATION:
(a)
Disconnect the connector from the occupant classifica-
tion ECU and the 4 occupant classification sensors.
(b)
Connect the negative (–) terminal cable to the battery.
CHECK:
(a)
Turn the ignition switch to the ON position.
(b)
Measure the voltage according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
O7–5 (SVC3) –
Body ground
Ignition switch ON
Below 1 V
O7–6 (SVC4) –
Body ground
Ignition switch ON
Below 1 V
O7–11 (SVC1) –
Body ground
Ignition switch ON
Below 1 V
O7–12 (SVC2) –
Body ground
Ignition switch ON
Below 1 V
NG
Repair or replace seat wire No. 1.
OK
![](/vehicles/linovind/vere/fry/fell.png)
H23821
H43699
H24595
SVC1
SVC2
SVC4
SVC3
O7
Occupant Classification ECU:
O8
O9
O10
O11
SVC1
SVC2
SVC3
SVC4
Occupant Classification Sensor
Front LH:
Occupant Classification Sensor
Front RH:
Occupant Classification Sensor
Rear LH:
Occupant Classification Sensor
Rear RH:
DI–1336
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1530
4
Check seat wire No. 1 (open).
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
O8–1 (SVC1) –
O7–11 (SVC1)
Always
Below 1
Ω
O9–1 (SVC2) –
O7–12 (SVC2)
Always
Below 1
Ω
O10–1 (SVC3) –
O7–5 (SVC3)
Always
Below 1
Ω
O11–1 (SVC4) –
O7–6 (SVC4)
Always
Below 1
Ω
NG
Repair or replace seat wire No. 1.
OK
![](/vehicles/linovind/vere/fry/qupla.png)
H23821
SVC1
SVC2
SVC4
SVC3
O7
Occupant Classification ECU:
H23821
SVC1
SVC2
SVC4
SVC3
O7
Occupant Classification ECU:
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1337
1531
5
Check seat wire No. 1 (short).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
O7–5 (SVC3) –
O7–6 (SVC4)
Always
1 M
Ω
or higher
O7–6 (SVC4) –
O7–11 (SVC1)
Always
1 M
Ω
or higher
O7–11 (SVC1) –
O7–12 (SVC2)
Always
1 M
Ω
or higher
O7–12 (SVC2) –
O7–5 (SVC3)
Always
1 M
Ω
or higher
O7–12 (SVC2) –
O7–6 (SVC4)
Always
1 M
Ω
or higher
O7–11 (SVC1) –
O7–5 (SVC3)
Always
1 M
Ω
or higher
NG
Repair or replace seat wire No. 1.
OK
6
Check seat wire No. 1 (short to ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
O7–5 (SVC3) –
Body ground
Always
1 M
Ω
or higher
O7–6 (SVC4) –
Body ground
Always
1 M
Ω
or higher
O7–11 (SVC1) –
Body ground
Always
1 M
Ω
or higher
O7–12 (SVC2) –
Body ground
Always
1 M
Ω
or higher
NG
Repair or replace seat wire No. 1.
OK
![](/vehicles/linovind/vere/fry/rerovon.png)
DI–1338
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1532
7
Check DTC.
PREPARATION:
(a)
Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.
(b)
Connect the negative (–) terminal cable to the battery.
CHECK:
(a)
Turn the ignition switch to the ON position.
(b)
Clear the DTCs stored in memory (see page
).
HINT:
First clear DTCs stored in the occupant classification ECU and then in the airbag sensor assembly.
(c)
Turn the ignition switch to the LOCK position.
(d)
Turn the ignition switch to the ON position.
(e)
Using the hand–held tester, check the DTCs of the occupant classification ECU (see page
OK:
DTC B1793 is not output.
HINT:
Codes other than DTC B1793 may be output at this time, but they are not related to this check.
NG
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст