2001 TOYOTA SEQUOIA Service Repair Manual

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Page 2105 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDF8±01
C00083DLC3
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1903
2097 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
1. DIAGNOSIS SYSTEM
(a) Inspect the battery voltage.
Battery v

Page 2106 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDF9±01
D05981DLC3
Hand±held
Tester
DI±1904
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2098 Author: Date:
2005 SEQUOIA (RM1146U)
DTC CHECK / CLEAR
1. DTC CHECK
(a) Checking DTCs using the ha

Page 2107 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI3IR±10
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1905
2099 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is indicated during the DTC check, check t

DI3IR±10
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1905
2099 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is indicated during the DTC check, check the components listed for that code in the table
below (proceed to the page given for that code).
DTC No.
(See Page)Detection ItemTrouble Area
B1211
(DI±1908)Driver door ECU communication stop
Driver door ECU
Wire harness
Body ECU
B1212
(DI±1911)Front passenger door ECU communication stop
Passenger door ECU
Wire harness
Body ECU
B1214
B1215
(DI±1914)Communication bus malfunction (Short to B+)
Communication bus malfunction (Short to ground)
Driver door ECU
Passenger door ECU
Back door ECU
A/C ECU (Integration control panel)
Combination meter
Memory seat ECU & switch
Wire harness
Body ECU
B1221
(DI±1924)Power window switch circuit on driver door
Power window master switch (Built in driver door ECU)
Wire harness
Body ECU
B1222
(DI±1925)Door lock switch circuit on driver door
Door lock control switch front LH (Built in driver door ECU)
Door unlock detection switch front LH
Wire harness
Body ECU
B1223
(DI±1926)Power window switch circuit on passenger door
Power window switch (Built in passenger door ECU)
Wire harness
Body ECU
B1224
(DI±1927)Door lock switch circuit on passenger door
Door lock control switch front RH (Built in passenger door
ECU)
Door unlock detection switch front RH
Wire harness
Body ECU
B1231
(DI±1928)Jam protection limit switch circuit on driver door
Limit switch (Built in power window motor)
Driver door ECU
Wire harness
Body ECU
B1232
(DI±1929)Jam protection pulse switch circuit on driver door
Pulse switch (Built in power window motor)
Driver door ECU
Wire harness
Body ECU
B1233
(DI±1930)Jam protection limit switch circuit on passenger door
Limit switch (Built in power window motor)
Passenger door ECU
Wire harness
Body ECU
B1234
(DI±1931)Jam protection pulse switch circuit on passenger door
Pulse switch (Built in power window motor)
Passenger door ECU
Wire harness
Body ECU
B1241
(DI±1932)Body ECU switch circuit diagnosis
Back door power window switch
Rear wiper and washer switch
Wire harness
Body ECU

Page 2108 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±1906
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2100 Author: Date:
2005 SEQUOIA (RM1146U)B1242
(DI±1933)
Wireless door lock tuner circuit malfunction
Wireless door lock control receiver
W

Page 2109 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI3IS±11
I27730
Instrument Panel J/B
Passenger Door ECU
(Power Window Switch) Combination Meter
Sliding Roof ECUDLC3 Body ECU
(Located behind
the instrument panel)
Driver Door ECU
(Power Window
Maste

Page 2110 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDFB±01
DI±1908
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2102 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
DTC B1211 Driver door ECU communication stop
CIRCUIT DESCRIPTION
This D

Page 2111 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual I28467
F18
Front Passenger Door ECUD22
Driver Door ECU
Body ECU
J/C
I18
Ignition Switch
Instrument Panel J/B
Sub J/B No. 3
F10
FL Block
Sub J/B No. 3Instrument Panel J/B
Engine Room R/B J8
J/C
Battery

Page 2112 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±1910
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2104 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check driver door ECU.
CHECK:
Check if the driver door window glass auto up f

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