2001 TOYOTA SEQUOIA Service Repair Manual

phone coolant fold seats fuel tank capacity gas type drain bolt

Page 1265 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDHZ±01
F19815
: CAN Main Bus Line
(CAN±H) DLC3
120 W
± 10%
Suspension
Control ECU ECM
: CAN Main Bus Line
(CAN±L)
: CAN Sub Bus Line
(CAN±H) : CAN Sub Bus Line
(CAN±L)120 W
± 10% Seri

Page 1266 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDI0±01
DI±1064
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1258 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DESCRIPTION
1. BRIEF DESCRIPTION
(a) The CAN (Controller Area Network) is a serial data c

DIDI0±01
DI±1064
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1258 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DESCRIPTION
1. BRIEF DESCRIPTION
(a) The CAN (Controller Area Network) is a serial data communication system for real time application.
It is an in±vehicle multiplex communication system that has a high communication speed (500 kbps)
and the function to detect malfunctions.
(b) By pairing the CANH and CANL bus lines, the CAN performs communication based on differential volt-
age.
(c) Many ECUs (sensors) installed in the vehicle operate by sharing information and communicating with
each other.
(d) The CAN has two resistors of 120 W which are necessary to communicate with the main bus line.
2. DEFINITION OF TERMS
(a) Main bus line
(1) The main bus line is a wire harness between the two terminus circuits on the bus (communication
line). This is the main bus in the CAN communication system.
(b) Sub bus line
(1) The sub bus line is a wire harness that diverges from the main bus line to the ECU.
3. ECUs THAT COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM
(a) Translate ECU
(b) Suspension Control ECU
(c) ECM
4. DIAGNOSTIC CODE FOR CAN COMMUNICATION SYSTEM
DTCs for the CAN communication system are as follows:
U0100/65, U0122/67, U0132/72, 65, 94.
HINT:
If C1201/51, C1202/52 or C1203/53 is output from skid control ECU, perform troubleshooting of each diag-
nosis code (see page DI±921).
5. REMARK FOR TROUBLESHOOTING
(a) Trouble in the CAN bus (communication line) can be checked from the DLC3 (except when there is
a wire break in lines other than the sub bus line of the DLC3).
NOTICE:
Do not insert the tester directly into the DLC3 connector. Be sure to use a service wire.
(b) The CAN communication system cannot detect trouble in the sub bus line of the DLC3 even though
the DLC3 is also connected to the CAN communication system.
6. HOW TO DISTINGUISH THE CAN J/C CONNECTOR
In the CAN communication system, all connectors connected to the CAN J/C are the same shape. The con-
nectors connected to the CAN J/C can be distinguished by the colors of the bus lines.
HINT:
See ºTERMINALS OF ECUº (see page DI±1068) for bus line colors.

Page 1267 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDI1±01
END
P. DI±911, DI±723
Confirmation Test
Items inside are titles of pages in this manual,
with the page number in the bottom portion. See the
pages listed for detailed explanation

Page 1268 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDI2±01
Inspector s
Name:
Customer s Name
Date Vehicle
Brought InOdometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/

Page 1269 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual 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
Suspen

Page 1270 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDI4±01
F19816
Junction Connector ºBº Side
(w/o Earth Terminal):Junction Connector ºAº Side
(w/ Earth Terminal):
Earth Terminal
Junction
ConnectorJ53
J54
J55
G
W L
W
B
W R W
J56 (*1) DI±1068
±

Page 1271 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19735
CAN J/C Connector Front View:
12345678
9 10111213141516
F19737
DLC3:
D6
CANH
CG
BAT
CANL
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1069
1263 Author: Date:
2005 SEQUOIA (RM1146U)
2. The Ter

Page 1272 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F16975
Translate ECU:
T5 ENG+
ENG±
12345678
9 10111213141516
F19737F19152F19830
Translate ECU Wire Harness View:
T5
GND
ENG±
ENG+
DLC3:
D6
BAT
DI±1070
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1264 Au

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