2001 TOYOTA SEQUOIA Service Repair Manual

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TOYOTA SEQUOIA 2001  Service Repair Manual ± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1911
2105 Author: Date:
2005 SEQUOIA   (RM1146U)
DTC B1212 Front passenger door ECU commu-
nication stop
CIRCUIT DESCRIPTION
This DTC is indicated wh

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TOYOTA SEQUOIA 2001  Service Repair Manual I28468
MPX2MPX1 D22
Driver Door ECU
Back Door ECU
IB1F18
Passenger 
Door ECU
J/CII2
BF1 BD2 B11
J37 J38J/CJ34 J33 II2
II2MPX2
MPX1
SIG
BDR
GND F18 F18
F18 F18
F18 F18
F18 F18
F18 F18
F18 F18 G±B
B
B

Page 2115 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual ± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1913
2107 Author: Date:
2005 SEQUOIA   (RM1146U)
INSPECTION PROCEDURE
1 Check passenger door ECU.
CHECK:
Check if the passenger door window glass aut

Page 2116 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual DI±1914
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2108 Author: Date:
2005 SEQUOIA   (RM1146U)
DTC B1214 Communication bus malfunction
(Short to B+)
DTC B1215 Communication bus malfunction
(Short

Page 2117 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual I28465
D22
Driver Door ECU
S19
Sliding Roof
Control ECU
Combination MeterI19
A/C ECU
(Integration Control and Panel)
Memory Seat ECU
& SwitchBody ECU
J/C
Back Door ECU
F18
Passenger
Door ECUInstrument

Page 2118 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual DI±1916
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2110 Author: Date:
2005 SEQUOIA   (RM1146U)
INSPECTION PROCEDURE
1 Check apparatus.
CHECK:
Choose the apparatus to be inspected.
ApparatusGo to

Page 2119 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual ± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1917
2111 Author: Date:
2005 SEQUOIA   (RM1146U)
OK Repair or replace the wire harness between the
sliding roof control ECU and body ECU.
NG
4 Check

Page 2120 of 4323

TOYOTA SEQUOIA 2001  Service Repair Manual DI±1918
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2112 Author: Date:
2005 SEQUOIA   (RM1146U)
6 Check for a short circuit between the driver door ECU and front passenger door
ECU.
PREPARATION:
D