Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 202xg cicidrlr
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05-1 146
DIAGNOSTICS - LIGHTING SYSTEM 05BVR-02
DRL RELAY CIRCUIT
CIRCUIT DESCRIPTION
The Multiplex network body ECU controls the DRL No.2 relay.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1329
05-1 147
DIAGNOSTICS - LIGHTING SYSTEM
WIRING DIAGRAM
Multiplex Network
Body ECU
Relay Block No.4
Driver Side Junction Block
DRL NO.2 Relay 23
B-R G-R
4 4 1C DRL
1 2 11
4 4 R-W
5 3
Relay Block No.3
B-R
R-W
H-LP LH
R-L
3 3
2 1
H-LP RH
R R-W
3 3
2 1
R
Relay Block No.4
H5
Headlamp Assy LH (High) DRL NO.4 Relay
R-L R-B W-B
4 4
2 1 5 3
W-B R-B
4 4
H7 2 1 R-B
Headlamp Assy RH (High)
R-Y R-B DRL NO.3 Relay
2 1
W-B To
4 4
2 1 Head Relay
R-Y R
4 4
3 5
Relay Block No.3 4
Short Pin
W-B W-B
3 3 4
2 1
W-B
W-B
Engine Room Junction Block
Fusible Link Block
4 DRL 1 1 1 FL MAIN
B-R W W
2B 2D F8 F6 W-B
Battery ED
E68117
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1330
05-1 148
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
(Test Details)
Turn daytime running light relay ON/OFF
DRL RELAY (Vehicle Condition) -
Ignition SW is ON, engine is stopped and light
control SW is in OFF position.
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-1 131)
NG
2 INSPECT HEADLAMP DAY DIM LIGHT RELAY
(a) Inspect headlamp day dim relay continuity.
Standard:
Condition Tester connection Specified condition
Always 1-2 Continuity
Always 3-5 No continuity
Apply B+ between
3-5 Continuity
the terminal 1 and 2
B16200
NG REPLACE HEADLAMP DAY DIM LIGHT RELAY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1331
05-1 149
DIAGNOSTICS - LIGHTING SYSTEM
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Measure voltage between the terminal as shown in the chart below.
Standard:
Tester connection Condition Specified voltage (V)
1C-23 - Body ground Headlamp dimmer switch LOW FLASH Below 1 V 10 to 14 V
1C
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 : 1332
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