engine TOYOTA SEQUOIA 2001 Service Repair Manual

H23631H03352H23983H24011
Airbag
Sensor
Assembly Front Airbag
Sensor RH
Engine Room Main Wire
A
B
C D E F
Service Wire
Cowl Wire
+SR±SR
A12IL3
+SR ±SR
H03354H23983H24012
Airbag
Sensor
Assembly
+SR±SRA
B D E
C F
Front Airbag
Sensor RH
Cowl WireEngine Room Main Wire
IL3
DI±1168
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1362 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check engine room main wire (open).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
HINT:
The service wire has already been inserted into connector ºEº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IL3±1 (+SR) ±
IL3±2 (±SR)AlwaysBelow 1 W
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.
9 Check engine room main wire (short).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IL3±1 (+SR) ±
IL3±2 (±SR)Always1 MW or higher
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H03354H23983H24012
Airbag
Sensor
Assembly
+SR±SRA
B D E
C F
Front Airbag
Sensor RH
Cowl WireEngine Room Main Wire
IL3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1169
1363 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check engine room main wire (short to B+).
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 engine room main wire connector from the
cowl wire.
(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.
(b) Measure the voltage according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IL3±1 (+SR) ±
Body groundIgnition switch ONBelow 1 V
IL3±2 (±SR) ±
Body groundIgnition switch ONBelow 1 V
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H03354H23983H24012
Airbag
Sensor
Assembly
+SR±SRA
B D E
C F
Front Airbag
Sensor RH
Cowl WireEngine Room Main Wire
IL3
DI±1170
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1364 Author: Date:
2005 SEQUOIA (RM1146U)
11 Check engine room main wire (short to ground).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IL3±1 (+SR) ±
Body groundAlways1 MW or higher
IL3±2 (±SR) ±
Body groundAlways1 MW or higher
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H02750
Airbag Sensor Assembly
A20+SL 30
IA31
IA32
A2028 A11
Front Airbag Sensor LH
2
1±SL W
W
BB +SL
±SL
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1171
1365 Author: Date:
2005 SEQUOIA (RM1146U)
DTC B1615/14 Front Airbag Sensor LH Malfunction
CIRCUIT DESCRIPTION
The front airbag sensor LH consists of the diagnosis circuit, the frontal deceleration sensor, etc.
If the airbag sensor assembly receives signals from the frontal deceleration sensor, it determines whether
or not the SRS should be activated.
DTC B1615/14 is recorded when a malfunction is detected in the front airbag sensor LH circuit.
DTC No.DTC Detection ConditionTrouble Area
B1615/14

The airbag sensor assembly receives a line short circuit
signal, an open circuit signal, a short circuit to ground sig-
nal or a short circuit to B+ signal in the front airbag sensor
LH circuit for 2 seconds.

Front airbag sensor LH malfunction

Airbag sensor assembly malfunction

Front airbag sensor LH

Airbag sensor assembly

Cowl wire

Engine room main wire
WIRING DIAGRAM
DIDGT±01

H23631H03352H23983H24011
Airbag
Sensor
Assembly Front Airbag
Sensor LH
Engine Room Main Wire
A
B
C D E F
Service Wire
Cowl Wire
+SL±SL
A11IA3
+SL ±SL
H03354H23983H24012
Airbag
Sensor
Assembly
+SL±SLA
B D E
C F
Front Airbag
Sensor LH
Cowl WireEngine Room Main Wire
IA3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1177
1371 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check engine room main wire (open).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
HINT:
The service wire has already been inserted into connector ºEº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IA3±1 (+SL) ±
IA3±2 (±SL)AlwaysBelow 1 W
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.
9 Check engine room main wire (short).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IA3±1 (+SL) ±
IA3±2 (±SL)Always1 MW or higher
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H03354H23983H24012
Airbag
Sensor
Assembly
+SL±SLA
B D E
C F
Front Airbag
Sensor LH
Cowl WireEngine Room Main Wire
IA3
DI±1178
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1372 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check engine room main wire (short to B+).
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 engine room main wire connector from the
cowl wire.
(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.
(b) Measure the voltage according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IA3±1 (+SL) ±
Body groundIgnition switch ONBelow 1 V
IA3±2 (±SL) ±
Body groundIgnition switch ONBelow 1 V
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H03354H23983H24012
Airbag
Sensor
Assembly
+SL±SLA
B D E
C F
Front Airbag
Sensor LH
Cowl WireEngine Room Main Wire
IA3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1179
1373 Author: Date:
2005 SEQUOIA (RM1146U)
11 Check engine room main wire (short to ground).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
IA3±1 (+SL) ±
Body groundAlways1 MW or higher
IA3±2 (±SL) ±
Body groundAlways1 MW or higher
NG Repair or replace engine room main wire.
OK
Repair or replace cowl wire.

H23994
Airbag Sensor
Assembly
PAON A20 IM1
IGN123
4
L
16 I19
Passenger Airbag ON/OFF Indicator
(Integration Control and Panel)
3ESub J/B No. 3
5P±AB A2017
IG2 A2021
E1 A2025
E2 A2026 V
IM13
17
2 PAON
P±AB
IG+3A15 L
V
R±L
R±L
GAUGE 1C2
1A3
1E7
1C4B
B±Y I18
Ignition SW
IG1 AM1
IG2 AM22
6 5 1
Instrument Panel J/B W±L
W±RInstrument Panel J/B
Instrument Panel J/B
1A
1A6
8 1F
1F9
10 W±B
W±B A
A J8
J/C
W±B W±B
1C3
1C61J7
1L 1 AM1
W W±REngine Room J/B
2C1
2D1 AM2
F10
Fusible Link Block
84
5
B
BatteryALT
IE B±R
2
1B DI±1228
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1422 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

H23995
RMIL A2020
IM1B±R I18
Ignition SW
Combination Meter
BatteryIG2 A2021
E1 A2025
E2 A2026 B
W±B
W±B B±R
IG2 AM26 5
W±RRSCA OFFB±R
C5 40
C612C624
1H11
1C2
1A3 IGN1
1D6
1F9
1F101A6
1A8 Instrument Panel J/B
Engine Room J/B 1C3
1J7
2C1
2D1AM2BR
W±B
W±B
J8
J/C A
A F10
Fusible Link Block 4
5
BBB±O
IEAirbag Sensor
Assembly
1
W±R
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1239
1433 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

H23996
LA
A2014
ABR I18
Ignition SW
Combination Meter
BatteryIG2 A2021
E1 A2025
E2 A2026 B
W±B
W±B B±R
IG2 AM26 5 W±R
SRS B±Y
C5 29
C612 C6241D4
1A5 1A3 IGN1
1D6
1F9
101A6
1A8 Instrument Panel J/B
Engine Room J/B1H11
1J7
2C1
2D1AM2BR
W±B
W±B
J8
J/C A
A 4
5 B
BB±O
IEAirbag Sensor
Assembly
1C2
Instrument Panel J/B
F10
Fusible Link Block 1C3 D6
DLC3
114B10
4A20
4A10B±Y
B±Y
1F W±R Sub J/B No. 4 DI±1248
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1442 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM