2001 TOYOTA SEQUOIA instrument panel

F19699
Translate ECU
IG1 1
T5 B±R A
J37 J/B
A
J37 B±R Sub J/B No.3
8
3C 8
3A B±R
Instrument Panel J/B
ECU±IG
4
1C
6
1C 4
1F
1
1LAM1
2 1B±Y
2I18
Ignition SW
W±L
1
IG1AM1
W
8
5
BALTF10
FL Block
Battery40
T5 O
A
A
OJ43
J/C
IGGND
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1081
1275 Author: Date:
2005 SEQUOIA (RM1146U)
Translate ECU Communication Stop Mode
MODE DESCRIPTION
Detection ItemSymptomTrouble Area
Translate ECU
Communication
Stop Mode

ºTRANSLATE ECUº is not displayed on the ºBUS
CHECKº screen of the hand±held tester.

DTCs are output from each ECU in translate ECU com-
munication stop mode as shown in the ºDTC COMBINA-
TION TABLEº (see page DI±1067).

Power source or inside the translate ECU
WIRING DIAGRAM
DIDIA±01

F19706
Suspension
Control ECU
IG 10
S25 B±R
J37 J/C
J37 Sub J/B No.3
B±R 8
3C 8
3A B±R
Instrument Panel J/B
4
1F
1
1LECU±IG
AM14
1C
6
1CB±Y
2I18
Ignition SW
AM1
IG1W±L
W
8
ALT
5
B
BatteryF10
FL BlockGND 22
S25 W±B
A
J12
J/C
IF 121 AA
Translate ECU
ENG+
ENG±T5
T514
16ECM
CANH
CANL
Junction Connector
E5
E5 33
34 R
W
WL
J55
J55J53
J53 1
21
2 J56
J561
2
W G
CANH
CANL S25
S2529
28
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1083
1277 Author: Date:
2005 SEQUOIA (RM1146U)
Suspension Control ECU Communication Stop Mode
MODE DESCRIPTION
Detection ItemSymptomTrouble Area
Suspension Con-
trol ECU Commu-
nication Stop
Mode
ºRIAR AIRSUSº is not displayed on the ºBUS CHECKº
screen of the hand±held tester.

DTCs are output from each ECU in suspension control
ECU communication stop mode in the ºDTC COMBINA-
TION TABLEº (see page DI±1067).

Power source or inside the suspension control ECU

Suspension control ECU sub bus line
WIRING DIAGRAM
DIDIB±01

F19704
Translate ECU
ENG+
ENG±14
T5
16
T5R
W1
J55
2
J551
J53
2
J53 Junction Connector
L
W33
E5
34
E5
3
E4ECM
CANH
CANL
BATT B±Y
11
IA4
D6 DLC3
6
14CANH
CANL
BAT B
W 1
J54
2
J54 1
J56
2
J56 Suspension Control ECU
G
W (*1)
(*1) 29
S25
28
S25
25
S25 CANH
CANL
BATVB
J37C
J38VV 5
IA5B±Y
V
V Engine Room J/B & R/B No.2
EF1 No.1
AIR SUS No.27
2H
2
2 1
2D B
W W
WB
W 49
8
AIR
SUSALT
5
B
F10
FL
Block
Battery1
1L13
1F
1
2 OBD Instrument Panel J/B
W±R
16
*1: w/ Air Suspension System12 J/C
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1107
1301 Author: Date:
2005 SEQUOIA (RM1146U)
Check CAN Bus Line For Short To + B
CIRCUIT DESCRIPTION
A short to +B is suspected in the CAN bus line when there is continuity between terminals 16 (BAT) and 6
(CANH) or terminals 16 (BAT) and 14 (CANL) of the DLC3.
SymptomTrouble Area
There is continuity between terminals 16 (BAT) and 6
(CANH) or 16 (BAT) and 14 (CANL) of the DLC3.

Short to +B in CAN bus line

ECM

Translate ECU

Suspension control ECU
WIRING DIAGRAM
DIDIF±01

DIDGJ±02
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1121
1315 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DESCRIPTION
1. DESCRIPTION OF SUPPLEMENTAL RESTRAINT SYSTEM
(a) General description.
In this system, the airbag sensor assembly installed on the floor under the A/C unit determines whether
or not to activate the SRS airbags (driver airbag, passenger airbag, front seat airbags and curtain
shield airbags) and seat belt pretensioners by receiving the collision signal from each sensor (exclud-
ing the airbag sensor assembly). When there is trouble in the system, the airbag sensor assembly turns
on the SRS warning light on the combination meter to inform the driver.
(b) Description of the dual stage control.
The airbag sensor assembly controls the dual stage deployment of the driver airbag in the steering
wheel pad and the passenger airbag on the instrument panel. The airbag sensor assembly controls
the dual stage deployment of the driver airbag according to the collision impact, seat position and seat
belt ON/OFF state. It also controls the dual stage deployment of the passenger airbag according to
the collision impact and seat belt ON/OFF state.
(c) Description of the roll±over function.
(1) The airbag sensor assembly detects inclination signals from the inclination sensor installed on
the vehicle. The roll±over function ensures passenger safety by using these signals to activate
the RH and LH curtain shield airbag assembly and seat belt pretensioner when vehicle inclination
exceeds the specified value.
(2) An RSCA OFF switch (roll±over sensing curtain shield airbag OFF switch), which allows optional
deactivation of the roll±over function, is installed on the vehicle.
(d) Description of check mode (signal check).
This airbag sensor assembly is operable using the check mode of the hand±held tester function. Check
mode can detect and output DTC by using a hand±held tester to switch the airbag sensor assembly
to the check mode.
A simulation method is used, if the malfunction cannot be reproduced during troubleshooting (the mal-
function is temporarily solved, etc.). In this case, joggling each connector, or driving on a city or rough
road with the airbag sensor assembly in check mode makes it possible to obtain a more accurate mal-
function condition.

H24635
Rollover Detection:
Side Collision and Rollover Detection:(a)
(b)
Airbag Sensor Assembly
Roll Rate Sensor 1
Roll Rate Sensor 2
Lateral Deceleration Sensor
Curtain Shield Airbag
Assembly (LH and RH)
Seat Belt Pretensioner
(LH and RH)
(c) (b)
Airbag Sensor Assembly
Roll Rate Sensor 1
Roll Rate Sensor 2
Lateral Deceleration Sensor
Curtain Shield Airbag
Sensor Assembly
Side Airbag Sensor
Assembly (
)Curtain Shield Airbag
Assembly (LH and RH)
Seat Belt Pretensioner
(LH and RH)Side Airbag of Collision
Side (
)
Activate depending on the
condition of the collision.
: DI±1124
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1318 Author: Date:
2005 SEQUOIA (RM1146U)
(d) w/ Side and curtain shield airbag:
Roll sensing of curtain shield airbag control.
(1) The airbag sensor assembly contains a roll rate sensor and roll rate sensor (that determine the
inclination angle the vehicle) and a lateral deceleration sensor (that determine the lateral force
that is applied to the vehicle). These sensors detect the vehicle's roll angle, rotational speed, and
lateral acceleration speed.
(2) Based on the information obtained from sensors, the airbag sensor assembly makes an overall
judgment of the vehicle's roll angle rotational speed, and lateral acceleration speed. If the airbag
sensor determines that the vehicle has rolled over due to cause other than the side collision, it
deploys the right and left curtain shield airbags and the front right and left seat belt pretensioners.
(3) This system provides a roll sensing of curtain shield airbags cutoff switch (RSCA OFF switch)
on the driver side of the instrument panel with which the driver can stop the operation of the func-
tion.
(4) By operating the RSCA OFF switch and while the roll sensing of the curtain shield airbag control
is OFF, and when the airbag sensor assembly judges to operate the side and curtain shield air-
bag system in the event of side collision, it is no need prohibit this operation.

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