2001 TOYOTA SEQUOIA side step

F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J53
W L
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
BAT
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1109
1303 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check CAN bus line for short to +B (ECM main bus line).
PREPARATION:
Disconnect the ECM main bus line connector (J53) from the
junction connector.
NOTICE:

Before disconnecting the connector, make a note of
where it is connected.

Reconnect the connector to its original position.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connectionConditionSpecified value
D6±16 (BAT) ±
D6±6 (CANH)Ignition Switch OFF1 MW or higher
D6±16 (BAT) ±
D6±14 (CANL)Ignition Switch OFF1 MW or higher
OK Go to step 8.
NG
4 Connect the connector.
Reconnect the ECM main bus line connector (J53) to the junction connector.
NEXT

F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J55
W R
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
BAT
DI±1110
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1304 Author: Date:
2005 SEQUOIA (RM1146U)
5 Check CAN bus line for short to +B (Translate ECU main bus line).
HINT:
For vehicles without an enhanced air suspension system, go to
step 11.
PREPARATION:
Disconnect the translate ECU main bus line connector (J55)
from the junction connector.
NOTICE:

Before disconnecting the connector, make a note of
where it is connected.

Reconnect the connector to its original position.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connectionConditionSpecified value
D6±16 (BAT) ±
D6±6 (CANH)Ignition Switch OFF1 MW or higher
D6±16 (BAT) ±
D6±14 (CANL)Ignition Switch OFF1 MW or higher
OK Go to step 10.
NG
6 Connect the connector.
Reconnect the translate ECU main bus line connector (J55) to the junction connector.
NEXT

F19749
CAN J/C ºAº Side (w/ Earth Terminal)
Wire Harness View:
J56
G
WEarth Terminal
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1115
1309 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check for an open in one side of the CAN sub bus line (Suspension control ECU
sub bus line).
HINT:
For vehicles without an enhanced air suspension system, go to
step 3.
PREPARATION:
(a) Turn the ignition switch LOCK position.
(b) Disconnect the suspension control ECU sub bus line con-
nector (J56) from the CAN J/C.
NOTICE:

Check the colors of the wire harnesses before dis-
connecting the connector.

Before disconnecting the connector, make a note of
where it is connected.

Reconnect the connector to its original position.
(c) Connect the hand±held tester to the DLC3 via CAN VIM.
(d) Turn the ignition switch ON.
CHECK:
Select ºBUS CHECKº on the hand±held tester display via the
CAN VIM (see page DI±1073).
RESULT:
AºREAR AIRSUSº does not appear
B2 or more ECUs and/or sensors do not appear
A Go to step 4.
B
2 Connect the connector.
(a) Turn the ignition switch LOCK position.
(b) Reconnect the suspension control ECU sub bus line connector (J56) to the CAN J/C.
NEXT

DI6OW±27
Warning Light Check
P. DI±1147
END
P. DI±1127
P. DI±1137
DTC Check (Read Past DTC)
Symptom Simulation
Normal
System Code
DTC Check
Warning Light ON
Trouble
Code
Warning Light
Remains OFF
Circuit Inspection
Identification of Problem
Repair
Warning Light Check
DTC Check (Read Past DTC)
Confirmation Test
Remains ON
Remains OFF
Clear DTCItem inside are titles of pages in this manual,
with the page number in the bottom portion. See the
pages for detailed explanations.
1
24
3
57
89
10
DTC Chart
DTC Chart6
11
12P. DI±1155
P. IN±35
P. DI±1161 ± DI±1498
Remains OFF
Remains ON
Vehicle Brought to Workshop
Customer Problem Analysis
DTC Check (Read Present DTC)
P. DI±1155P. DI±1147
P. DI±1147
P. DI±1147
P. DI±1137
P. DI±1147
Step 3, 4, 8, 9, 10, 12: Diagnostic steps permitting the use
of the hand±held tester. DI±1126
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1320 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING

DIDGL±01
H24009
A19A20A21
17
24 18
23 19
22 20
21 4 8372615
12 13 11 14 10
15 9
16
28 27 26 25 30 294 8372615 4 8372615
10 9 12 13 11 14 15 16 10 9 12 13 11 14 15 16
17 18 19 20 24 23 22 21 17 18 19 20 24 23 22 21
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1133
1327 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
1. AIRBAG SENSOR ASSEMBLY
Terminal No.Terminal SymbolDestination
A19±1 (*1)SFL+Side airbag assembly LH (Side squib LH)
A19±2 (*1)SFL±Side airbag assembly LH (Side squib LH)
A19±3 (*1)ICL±Curtain shield airbag assembly LH (Curtain shield airbag LH
squib)
A19±4 (*1)ICL+Curtain shield airbag assembly LH (Curtain shield airbag LH
squib)
A19±5PL+Front seat outer belt LH (P/T squib LH)
A19±6PL±Front seat outer belt LH (P/T squib LH)
A19±9LSP+Seat position airbag sensor assembly
A19±10LBE+Front seat inner belt RH (Seat belt buckle switch LH)
A19±17LSP±Seat position airbag sensor assembly
A19±18LBE±Front seat inner belt RH (Seat belt buckle switch LH)
A19±19 (*1)VUPLSide airbag sensor assembly LH
A19±20 (*1)VUCLCurtain shield airbag sensor assembly LH
A19±21 (*1)ESLSide airbag sensor assembly LH
A19±22 (*1)ESCLCurtain shield airbag sensor assembly LH
A20±1P2+Front passenger airbag assembly (P squib (Dual stage ± 2nd
step))
A20±2P2±Front passenger airbag assembly (P squib (Dual stage ± 2nd
step))
A20±3P±Front passenger airbag assembly (P squib)
A20±4P+Front passenger airbag assembly (P squib)
A20±5D+Steering wheel pad (D squib)
A20±6D±Steering wheel pad (D squib)
A20±7D2±Steering wheel pad (D squib (Dual stage ± 2nd step))
A20±8D2+Steering wheel pad (D squib (Dual stage ± 2nd step))
A20±13PBEWIntegration control and panel (Seat belt warning light)
A20±14LACombination meter (SRS warning light)
A20±15TCDLC3

DIDGP±01
DI±1152
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1346 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
HINT:
By accessing the DATA LIST displayed by the hand±held tester, you can perform such functions as reading
the values of the switches and sensors without removing any parts. Reading the DATA LIST is the first step
of troubleshooting and is one method to shorten labor time.
1. DATA LIST FOR AIRBAG SENSOR ASSEMBLY
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Following the display on the tester screen, read the ºDATA LISTº.
ItemMeasurement tem/
Range (Display)Normal ConditionDiagnostic Note
D SEAT POSITION
Seat position (Driver side)/
FORWARD: Seat position
is forward
BKWARD: Seat position is
rearward
FAIL: A failure is detected
FORWARD/BKWARD±
PASSENGER CLASS
Passenger classification/
NG: Data is not deter-
mined
NONE: Vacant
CHILD: Child (less than 36
kg (79.37 lb)) is seated
SMALL: Adult (36 to 54 kg
(79.37 to 119.05 lb)) is
seated
REGULAR: Adult (more
than 54 kg (119.05 lb)) is
seated
FAIL: A failure is detected
NG/NONE/CHILD/SMALL/
REGULAR±
D BUCKLE SW
Buckle switch (Driver side)/
UNSET: The seat belt is
not fastened
SET: The seat belt is fas-
tened
NG: Data is not deter-
mined
UNSET/SET±
P BUCKLE SW
Buckle switch (Passenger
side)/
UNSET: The seat belt is
not fastened
SET: The seat belt is fas-
tened
NG: Data is not deter-
mined
UNSET/SET±
DISPLAY TYPE
Display type identification
information/
LR: The display is indi-
cated by LH/RH
DP: The display is indi-
cated by Driver/Passenger
LR/DPFor this vehicle, the display
is displayed by LH/RH.

± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1157
1351 Author: Date:
2005 SEQUOIA (RM1146U)B1812/53
(DI±1384)

Short in D squib (Dual stage ± 2nd step) circuit
(to ground)

Steering wheel pad (D squib, Dual stage ±
2nd step)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1813/53
(DI±1384)
Short in D squib (Dual stage ± 2nd step) circuit
(to B+)

Steering wheel pad (D squib, Dual stage ±
2nd step)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1815/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit

Front passenger airbag assembly (P squib,
Dual stage ± 2nd step)

Airbag sensor assembly

Cowl wire
ON
B1816/54
(DI±1406)
Open in P squib (Dual stage ± 2nd step) circuit

Front passenger airbag assembly (P squib,
Dual stage ± 2nd step)

Airbag sensor assembly

Cowl wire
ON
B1817/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit
(to ground)

Front passenger airbag assembly (P squib,
Dual stage ± 2nd step)

Airbag sensor assembly

Cowl wire
ON
B1818/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit
(to B+)

Front passenger airbag assembly (P squib,
Dual stage ± 2nd step)

Airbag sensor assembly

Cowl wire
ON
B1820/55
(*1)
(DI±1416)

Short in side squib RH circuit

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1821/55
(*1)
(DI±1416)

Open in side squib RH circuit

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1822/55
(*1)
(DI±1416)

Short in side squib RH circuit (to ground)

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1823/55
(*1)
(DI±1416)

Short in side squib RH circuit (to B+)

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1825/56
(*1)
(DI±1426)

Short in side squib LH circuit

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1826/56
(*1)
(DI±1426)

Open in side squib LH circuit

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1827/56
(*1)
(DI±1426)

Short in side squib LH circuit (to ground)

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1828/56
(*1)
(DI±1426)

Short in side squib LH circuit (to B+)

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1830/57
(*1)
(DI±1436)

Short in curtain shield airbag RH squib circuit

Curtain shield airbag assembly RH
(Curtain shield airbag RH squib)

Airbag sensor assembly

Floor wire
ON

H02757H10600H40103H23566
CG
TCDTC B1610/13
DLC3 Front Airbag
Sensor RHAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1163
1357 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
CHECK:
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page DI±1147).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1610/13 is not output.
HINT:
Codes other than DTC B1610/13 may be output at this time, but
they are not related to this check.
NG Go to step 2.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page DI±1137).