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05-1600
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM 05BYZ-02
ALL DOORS CANNOT BE LOCKED/UNLOCKED AT ONCE
CIRCUIT DESCRIPTION
The body ECU receives a switch signal from the master switch, the door control switch, the driver door key
cylinder and the passenger door key cylinder and then drives the door lock motor.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1783
05-1601
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
WIRING DIAGRAM
Instrument Panel J/B Assy
D9
Power Window Regulator Master Switch Assy Multiplex Network
(Door Control Switch)
25 Body ECU
7
LOCK 5 R-Y R-Y 9
IA2 1K L1
W-B 1
9 22
8 G G 12
UNLOCK IA2 1K UL1
D10
Door Control Switch Assy (Passenger Side) 3 3
6 R-Y R-Y
LOCK IM1 1J
W-B 3
5 4
5 G G
UNLOCK IM1 1J
D11 5
LG
Front Door w/ Motor Lock Assy LH J18 1J
5 J/C 26
9 LG LG 94 84 LG 10
IA1 1K L2
W-B 7
7 8
10 L L
IA1 B9 UL3
15 7
8 BR-R BR-R
IA1 B9 LSWD
2 4
1 R W-R
IA1 B9 ACTD
4 L-R 11 L-R
IA2
D12
W-B
Front Door w/ Motor Lock Assy RH
4
6 LG LG
IM1
W-B 8
6 4
5 L-Y L-Y
IM2 B7 UL2
7 27
7 Y Y
IM2 B7 LSWP
J/C
2 B
1 R L-B
IA1 1 IM1 J25
2
W-B A 1
1 1K ACT+
4 L-R L-R
IM1 J25
W-B
B B
L-B
J25 J26
IE
A C
L-R
J25 J26
2 IM2 1
1J
L-R
W-B 2
3
1J ACT-
L-B
IG
Continued on the next page
B68893
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1784
05-1602
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
*1 w/ Power Slide Door
Continued from the previous page
*2 w/o Power Slide Door
*3 w/ Power Back Door
*4 w/o Power Back Door
S22
Slide Door Lock Assy LH
9 17
2 L-R L-R
BD1 1P
8 6
3 B-R L-B
BD1 1P
7 5
W-B 4 1 L-R L-R 20
BD1 1P LSWL
J38 18 BD1
J/C
W-B* 1
A
A W-B* 2
W-B* 1
BM BH S25 L-R
Slide Door Lock Assy RH J/C
9 26 9
2 L-R L-R
BJ1 J36 J35
8 27 10
3 B-R L-B L-B
BJ1 J36 J35
7 6 J/C 18 5
W-B 4 1 L-R L-R L-R
BJ1 J34 J33 B7 LSWR
J42 18 BJ1
J/C
W-B* 1
A
W-B* 2
A W-B* 1
To Power Back Door ECU*3
BL
B11
Back Door Lock
13 26 J/C 10 25
W-B* 4 5 6 G-W* 4 G-W* 4 G-W
BG1 J14 J13 B7 BCTY
A 2 32 16 1
J41 W-B* 4 1 3 L-B* 4 L-B* 4 L-B* 4
BG1 J14 J13 B6 TR+
J/C A
BN J37 J19
J/C J/C J/C
20 4 21
1 11 73 13
J14 J13 B7 MPX2
R-L R-L R-L
Multiplex Network Body ECU
1 12 R-L
1 L-W L-W
BG3 P13 DC+ 22
W-B 4
2 11 MPX1 P13
2 G G
B10 BG3 P13 DC-
A Back Door Lock Assy Power Back Door ECU
J41
J/C Instrument Panel J/B Assy
BN
B68894
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1785
05-1603
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU-B)
(a) Inspect the ECU-B fuse (See page 68-1 ).
NG REPLACE FUSE
OK
2 PERFORM ACTIVE TEST USING HAND-HELD TESTER
(a) Select the ACTIVE TEST and then check that the power door lock operates.
HINT:
During the ACTIVE TEST, the hand-held tester sends a signal to the body ECU to drive all the power door
lock motors. If the power door lock operates, the power door lock motor itself and the wire harness between
the power door lock motor and body ECU are considered to be functioning normally.
Standard (Multiplex network body ECU):
Item Test Details Diagnostic Note
Operate the door lock motor for all doors
DOOR LOCK -
OFF/LOCK/UNLOCK
OK INSPECT INSTRUMENT PANEL JUNCTION
BLOCK ASSY (MULTIPLEX NETWORK BODY
ECU)
NG
3 MASTER SWITCH OR KEY CYLINDER OPERATION
(a) When manual door lock/unlock operation via the master switch can not be performed, proceed to A.
(b) When manual door lock/unlock operation via the door control switch (passenger side) can not be per-
formed, proceed to B.
(c) When manual door lock/unlock operation interlocked with the driver side door lock key cylinder can
not be performed, proceed to C.
(d) When manual door lock/unlock operation interlocked with the passenger side door lock key cylinder
can not be performed, proceed to D.
B Go to step 6
C Go to step 8
D Go to step 10
A
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1786
05-1604
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
4 INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY (DOOR CON-
TROL SWITCH)
(a) Remove the master switch.
LOCK (b) Inspect the resistance of the door control switch.
UNLOCK Standard:
Terminal No. Switch Position Specified Condition
1-5 Lock Below 1
1 - 5, 1 - 8 OFF 10 k or higher
1-8 Unlock Below 1
Door Control Switch
B59539 NG REPLACE POWER WINDOW REGULATOR
MASTER SWITCH ASSY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1787
05-1605
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
5 CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH
ASSY - INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK
BODY ECU) AND BODY GROUND)
Wire Harness Side (a) Disconnect the D9 switch and 1K J/B connectors.
(b) Check the resistance between the wire harness side con-
D9 nectors.
Power Window Regulator
Standard (Check for open circuit):
Master Switch Assy
Terminal No. Specified Condition
D9-5 (L) - 1K-25 (L1)
Below 1
D9-8 (UL) - 1K-22 (UL1)
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 (c) Check the resistance between the D9 switch connector
B66172
and body ground.
Standard (Check for open circuit):
1K Terminal No. Specified Condition
Instrument Panel J/B Assy D9-1 (E) - Body ground Below 1
(Multiplex Network Body ECU)
B68468
B68918 NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Go to step 8
6 INSPECT DOOR CONTROL SWITCH ASSY
Passenger Side (a) Passenger side:
No Pin (1 and 2)
Inspect the resistance of the switch.
LOCK Standard:
UNLOCK
Terminal No. Switch Position Specified Condition
3 -6 Lock Below 1
3 - 5, 3 - 6 OFF 10 k or higher
3-5 Unlock Below 1
No Pin (4)
B67755
NG REPLACE DOOR CONTROL SWITCH ASSY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1788
05-1606
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
7 CHECK WIRE HARNESS (DOOR CONTROL SWITCH ASSY (PASSENGER SIDE) -
INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY
ECU) AND BODY GROUND)
Wire Harness Side (a) Disconnect the D10 switch and 1J J/B connectors.
D10
(b) Check the resistance between the wire harness side con-
Door Control Switch Assy nectors.
(Passenger Side) Standard (Check for open circuit):
Terminal No. Specified Condition
D10-6 (L) - 1J-3 (L1)
Below 1
D10-5 (UL) - 1J-4 (UL1)
(c) Check the resistance between the D10 control switch
B66173 connector and body ground.
Standard (Check for open circuit):
1J Terminal No. Specified Condition
Instrument Panel J/B Assy D10-3 (E) - Body ground Below 1
(Multiplex Network Body ECU)
B68468
B68919 NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Go to step 10
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1789
05-1607
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
8 INSPECT FRONT DOOR W/MOTOR LOCK ASSY LH
(a) Apply battery voltage and inspect operation of the door
lock motor.
Standard:
Measurement Condition Specified Condition
Battery positive (+) Terminal 4
Lock
Battery negative (-) Terminal 1
Battery positive (+) Terminal 1
Unlock
Battery negative (-) Terminal 4
Unlock
Lock
B65427
(b) Inspect the resistance of the door lock and unlock switch.
Lock Standard:
Terminal No. Door Lock Position Specified Condition
7 -9 Lock Below 1
7 - 9, 7 - 10 OFF 10 k or higher
7 - 10 Unlock Below 1
Unlock
(c) Inspect the resistance of the position switch.
Standard:
Terminal No. Door Lock Position Specified Condition
Lock 10 k or higher
7 -8
Unlock Below 1
B65428 NG REPLACE FRONT DOOR W/MOTOR LOCK
ASSY LH
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1790
05-1608
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
9 CHECK WIRE HARNESS (FRONT DOOR W/ MOTOR LOCK ASSY LH - INSTRU-
MENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) AND
BODY GROUND)
Wire Harness Side (a) Disconnect the D11 door lock, B9 and 1K body ECU con-
nectors.
D11
(b) Check the resistance between the wire harness side con-
Front Door w/ Motor Lock Assy LH
nectors.
Standard (Check for open circuit):
Terminal No. Specified Condition
D11-1 (UL) - B9-4 (ACTD)
Below 1
D11-4 (L) - 1K-2 (ACT+)
(c) Check the resistance between the D11 door lock connec-
B9 tor and body ground.
Instrument Panel J/B Assy Standard (Check for open circuit):
(Multiplex Network Body ECU) Terminal No. Specified Condition
D11-7 (E) - Body ground Below 1
B68878
1K
Instrument Panel J/B Assy
(Multiplex Network Body ECU)
B68468
B68917 NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1791
05-1609
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
10 INSPECT FRONT DOOR W/MOTOR LOCK ASSY RH
(a) Apply battery voltage and inspect operation of the door
lock motor.
Standard:
Measurement Condition Specified Condition
Battery positive (+) Terminal 4
Lock
Battery negative (-) Terminal 1
Battery positive (+) Terminal 1
Unlock
Battery negative (-) Terminal 4
Unlock
Lock
B65429
(b) Inspect the resistance of the door lock and unlock switch.
Unlock Standard:
Terminal No. Door Lock Position Specified Condition
8 -5 Lock Below 1
8 - 5, 8 - 6 OFF 10 k or higher
8-6 Unlock Below 1
Lock
(c) Inspect the resistance of the position switch.
Standard:
Terminal No. Door Lock Position Specified Condition
Lock 10 k or higher
7 -8
Unlock Below 1
B65430 NG REPLACE FRONT DOOR W/MOTOR LOCK
ASSY RH
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1792
05-1610
DIAGNOSTICS - POWER DOOR LOCK CONTROL SYSTEM
11 CHECK WIRE HARNESS (FRONT DOOR W/ MOTOR LOCK ASSY RH - INSTRU-
MENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) AND
BODY GROUND)
Wire Harness Side (a) Disconnect the D12 door lock and 1J body ECU connec-
tors.
D12 (b) Check the resistance between the wire harness side con-
Front Door w/ Motor Lock Assy RH nectors.
Standard (Check for open circuit):
Terminal No. Specified Condition
D12-1 (UL) - 1J-2 (ACT-)
Below 1
D12-4 (L) - 1J-1 (ACT+)
B66177
(c) Check the resistance between the D12 door lock connec-
tor and body ground.
1J Standard (Check for open circuit):
Instrument Panel J/B Assy Terminal No. Specified Condition
(Multiplex Network Body ECU) D12-8 (E) - Body ground Below 1
B68468
B68920 NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1793
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