2001 TOYOTA SEQUOIA engine

F19777
ABS & VSC Actuator
(Skid Control ECU)
WA 35
S1 R±W IL2 4 R±W
21 C6
Combination Meter
Instrument Panel J/B
11
1HB±O
24
2 1CIGN1
B±R
I18
Ignition SW
IG2
AM2
IG1
AM13
1C
6
1C
4
1C7
1J
1
1L
4
1F AM1
ECU±IG1 2
2 6
5
1W±R
W±L
B±YW±R
WBB 1
2C1
2D
B±RSub J/B No.3
8
3A8
3CB±R
B±R
B±R B±R
W±B A
J37
A
J38 A
J371
IL113
S1
IG1 IG1
GND1
40O
O A
AA
AW±B
W±B
W±B J18
J/C J43
J/C17
IL1
9
IL11
S1
GND1
GND2 32
S1
IG IG W
B
B 5 8
4
ALTF10
Fusible
Link
Block
BatteryEngine Room J/B
AM2
J/C T5
Translate ECUABS
B±R DI±1022
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1216 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

F19778
ABS & VSC Actuator
(Skid Control ECU)
VSCW 44
S1 P±L IL2 3 P±L
3 C6
Combination SW Instrument Panel J/B
11
1HB±O
24
2 1CIGN1
B±R
I18
Ignition SW
IG2 AM2
IG1
AM13
1C
6
1C
4
1C7
1J
1
1L
4
1F AM1
ECU±IG1 2
265
1W±R
W±L
B±YW±R
WBB 1
2C1
2D
B±RSub J/B No.3
8
3A8
3CB±R
B±R
B±R B±R
W±B A
J37
A
J38 A
J371
IL113
S1
IG1 IG1
GND1
40O
O A
AA
AW±B
W±B W±B
J18
J/C J43
J/C17
IL1
9
IL11
S1 GND1
GND2 32
S1
IG
IG W
B
B 5 8
4
ALTF10
Fusible
Link
Block
BatteryEngine Room J/B
AM2
J/C T5
Translate ECUVSC TRAC
7
11L
WB±R
L
W 7
IL26
S1
6
IL22
S1CANH
CANL VSC+
VSC±
(*) CAN1 Circuit (*) (*)
(*)
(*) DI±1028
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1222 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

F19769
Translate ECU
VSC+
VSC±
IG17
T5
T511
1
T5B±RL
W
AA
J37
J38
A
J37B±R J/C
B±R B±RL
W 7
IL2
6
IL2
1
IL16
S1
2
S1
13
S1 ABS &VSC Actuator
(Skid Control ECU)
CANH
CANL
IG1
8
3C8
3A
B±R Instrument Panel J/B
4
1C
2
1C
3
1C
6
1C4
1F
11
1H
7
1J
1
1L ECU±IG
IGN1
AM1 B±R B±Y
W±R
W±LB±O
W±R
W
1 2Combination Meter
24
C6
Brake
1C5 W
8
ALTF10 Fusible
Link BlockEngine Room J/B
A W±R 1
2D1
2C
4
5
R±B R±B
B1 Brake Fluid Level
Warning SW
Y±L Y±LW±B 23
IA1
129
IA5O
A
A O
OJ43
J/C
IG Sub J/B No.4
LG±R
LG±R 4
4B4
4D
1P2 Parking
Brake SW
B
Battery 39
T5
24
T5
40
T5
4
T5 BRL
LVL2
GND
PKB2Sub J/B No.3
I18
Ignition SW
AM1 IG1
AM2 IG2 1
5 W±L
2
6
AM2
BB±R (*) CAN1 Circuit
(*)
(*)
(*) (*) DI±1034
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1228 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

F19779
ABS & VSC Actuator
(Skid Control ECU)
IG1 13
S1 B±R 1
IL1
B±R B±R
B±R
B±R
B±R A
J38 A
J37
A
J37 1
T5 IG1 Translate ECU
8
3C8
3A J/C
4
1F
11
1H
7
1J
1
1L 4
1C
2
1C
3
1C
6
1CECU±IG
IGN1
AM1
1 2 Instrument Panel J/B
B±O
W±R
W B±Y
B±R
W±R W±L
W±LIG1
IG2 AM1
AM2 I18
Ignition SW
W
W±R
WBEngine Room J/B
1
2C 1
2DAM2
Combination Meter
1C6
24
SLIP W±R
W±R
O
J43
J/C
O A
A W
8
4B
5
B
BatteryF10
Fusible
Link
Block ALT
IG
IGW±B 37
T5
40
T5 IND
GND
A
A J18
J/CW±B W±BW±B 17
IL11
S1
32
S1 9
IL1GND1
GND2 2
6 1
5Sub J/B No.3
OB±O 7
IL2
6
IL2 11
T57
T5
2
S16
S1 VSC+
VSC±L
WL
WCANH
CANL (*) CAN1 Circuit
(*) (*) (*)
(*) DI±1042
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1236 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

F19780
ABS & VSC Actuator
(Skid Control ECU)
Translate ECU
CANH
CANL
IG1 VSC± VSC+
IG17
T5
11
T5
1
T56
S1
2
S1
13
S1 7
IL2
6
IL2
1
IL2 A
J38
A
J37 A
J37
8
3C8
3A L
W
B±RL
W
B±R
B±R
B±R B±R
B±R Instrument Panel J/B
4
1C
2
1C
3
1C
6
1C4
11
1H
7
1J
1
1L 1F ECU±IG
IGN1
AM1
21 AM1
AM2IG1
IG2 I18
Ignition SW
B±Y
B±R W±L
W±R
W±LB±O
W±R
W 12
56C6
Combination
Meter
VSC OFF
(4WD)
TRAC OFF
(2WD)
24
2
R±G W±R W
Engine Room J/B
1
2D1
2C AM2 F10 Fusible
Link Block
B 8
54 ALT
R±G 38
T5
26
T5
31
T5
40
T5 WT
CSW
EXI2
GND
(4WD)
Y±G
(4WD)
L±W
Y±B L±WSub J/B No.4
8
4B
7
4B7
4A8
4A16
F23
4
F23DL
PI
B
BatteryA
AJ43
J/C
IGJ18
J/C
IG A
A W±B W±B
O
OW±B
W±B 17
IL1
9
IL132
S11
S1GND1
GND2 Sub J/B No.3
4WD Control ECU J/C (*) CAN1 Circuit
(*)
(*)(*) (*)
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1049
1243 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

DIDI3±01
DTCTrouble Mode
Output fromOutput DTCECM
Communication
Stop ModeTranslate ECU
Communication
Stop ModeSuspension Control
ECU Communication
Stop Mode (*1)
Skid Control
ECU
Translate ECU
Suspension
Control
ECU (*1)
See pageU0100/65
65
94
U0100/65
U0122/67
U0132/71
±
±±± 


±
±


 
DI±1079
DI±1081 DI±1083 
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1067
1261 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
1. COMMUNICATION STOP MODE TABLE
(a) Complete ºCheck CAN Bus Lineº (see page DI±1076) to confirm that there is no malfunction in the CAN
bus line. Select ºBUS CHECKº on the hand±held tester via the CAN VIM (see page DI±1073).
(b) Check the communication stop mode of the ECUs not displayed among the following: ºENGINEº,
ºTRANSLATE ECUº, or ºREAR AIRSUSº.
SymptomInspection ItemSee page
ºENGINEº is not displayed on the hand±held tester via CAN VIM.ECM Communication Stop ModeDI±1079
ºTRANSLATE ECUº is not displayed on the hand±held tester via
CAN VIM.Translate ECU Communication Stop ModeDI±1081
ºREAR AIRSUSº is not displayed on the hand±held tester via
CAN VIM. (*1)Suspension Control ECU Communication Stop ModeDI±1083
HINT:
*1: w/ Air Suspension System
2. DTC COMBINATION TABLE
(a) Perform troubleshooting according to the combination of DTCs output.
HINT:

*1: w/ Air Suspension System

: DTCs that are being output.

±: DTCs that are not being output.

Previous CAN communication system DTCs may be the cause if CAN communication system DTCs
are output and all ECUs connected to the CAN communication system are displayed on the hand±held
tester 's ºBUS CHECKº screen via the CAN VIM.

F19698
ECM
MREL 8
E4 B±W 14
IA4 B±W
B±R12
IA4B±R B±R
B±R J16
J/C
D
DD1
E4
2
E4+B
+B2 Engine Room J/B
EF1 Relay
2
2H
6
2H1
2D
1
2F 3
25
1B
W±B
W±B
W±B7
E8E01
EB
EDJ5
J/C A F10
FL Block
B
4
5 B
BatteryEF1 No.1
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1079
1273 Author: Date:
2005 SEQUOIA (RM1146U)
ECM Communication Stop Mode
MODE DESCRIPTION
Detection ItemSymptomTrouble Area
ECM Communica-
tion Stop Mode

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

DTCs are output from each ECU in ECM communication
stop mode as shown in the ºDTC COMBINATION TABLEº
(see page DI±1067).

Power source or inside the ECM
WIRING DIAGRAM
DIDI9±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