Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 202xg cicitrly
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05-1 150
DIAGNOSTICS - LIGHTING SYSTEM 05BVS-02
TAIL RELAY CIRCUIT
CIRCUIT DESCRIPTION
The Multiplex network body ECU controls TAIL relay when signal is received from headlamp dimmer switch
assy.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1333
05-1 151
DIAGNOSTICS - LIGHTING SYSTEM
WIRING DIAGRAM
Multiplex Network
Body ECU
Driver Side Junction Block
Fusible Link Block
TAIL Relay
1 ALT 1 1
W W
F6 F7 1A TRLY
1 2 7
16
W-B
1L
5 3
S1 Side Marker Light LH 28
W-B G-O 4
1C
1 2
P2
Parking Light LH 13 TAIL
W-B G
1C
2 1
P3
Parking Light RH 4
W-B G
1C
2 1
J27 S2
J/C B Side Marker Light RH 5
W-B G-O
1C
B 1 2
B
12 J/C 4 3
G G
J32 J31 1L
J37
J/C 14
G G
1P
38 37
39
18
R19 G G
BG1
Rear Combination J41 R20 J39
Light LH J38 J/C J/C Rear Combination Light LH J/C
8
G W-B W-B W-B W-B G
BG1 B
1 3 A A A A 1 2 B
Tail A Tail
R21 W-B R22
Rear Combination Light RH Rear Combination Light RH
G W-B W-B G
3 2 A 2 B
Tail 1 Tail
W-B L2
W-B License Plate Light LH
FL
W-B W-B G
MAIN
A 1 2 B
W-B
Battery L3
IE ED EA BL BM BN License Plate Light RH
W-B G
A 1 2 B
E68128
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1334
05-1 152
DIAGNOSTICS - LIGHTING SYSTEM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in the case of using the hand-held tester, and start from step 2 in the case
of not using the hand-held tester.
1 PERFORM ACTIVE TEST USING HAND-HELD TESTER
(a) Connect the hand-held tester to DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main switch ON.
(c) Select the item below in the ACTIVE TEST and then check that the relay operates.
BODY NO.1:
Item Test Details Diagnostic Note
TAIL LIGHT Turn Tail light relay ON/OFF -
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-1 131)
NG
2 INSPECT TAIL LAMP RELAY
(a) Inspect tail lamp relay continuity.
Standard:
Condition Tester connection Specified condition
1-2
Always Continuity
3-4
Always 3-5 No continuity
4 Apply B+ between
3-5 Continuity
the terminal 1 and 2
E67351 NG REPLACE TAIL LAMP RELAY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1335
05-1 153
DIAGNOSTICS - LIGHTING SYSTEM
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Measure voltage between the terminal 1A-1 and body ground.
Standard:
Tester connection Specified voltage
1A-1 - Body ground 10 to 14 V
1A
E67348
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1336
05-1 154
DIAGNOSTICS - LIGHTING SYSTEM
4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Measure voltage between the each of terminals as shown in the chart below.
Standard:
Tester connection Condition Specified Voltage
1L-16 - 1C-4 Light control switch OFF TAIL Below 1 V 10 to 14V
1L-16 - 1C-5 Light control switch OFF TAIL Below 1 V 10 to 14V
1L-16 - 1C-13 Light control switch OFF TAIL Below 1 V 10 to 14V
1L-16 - 1C-28 Light control switch OFF TAIL Below 1 V 10 to 14V
1L-16 - 1L-3 Light control switch OFF TAIL Below 1 V 10 to 14V
1L-16 - 1P-14 Light control switch OFF TAIL Below 1 V 10 to 14V
1L
1C
1P
E67348
OK REPAIR OR REPLACE HARNESS OR
CONNECTOR
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-1 131)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1337
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