Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20vff ciecupow
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05-1868
DIAGNOSTICS - THEFT DETERRENT SYSTEM 05BA2-03
ECU POWER SOURCE CIRCUIT
CIRCUIT DESCRIPTION
This circuit provides power to operate the multiplex network body ECU.
WIRING DIAGRAM
Instrument Panel J/B Assy
Multiplex Network
Engine Room J/B Assy Body ECU
1 1 1 Short Pin 8 24
W W ECU-B W-L
F6 F8 2D 2C 1C BECU
1 2 26
F/L Block
FL
Main
16
W-B
1L GND1
5
17
W-B
1K GND2
Battery 4
IE IE
B67839
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU-B)
(a) Remove the ECU-B fuse from the engine room J/B.
(b) Check the resistance.
Standard: Below 1
NG REPLACE FUSE
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2051
05-1869
DIAGNOSTICS - THEFT DETERRENT SYSTEM
2 CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK
BODY ECU) (POWER SOURCE)
Wire Harness Side (a) Disconnect the 1C J/B connector.
(b) Check the voltage between the wire harness side con-
1C nector and the body ground.
Instrument Panel J/B Assy Standard:
Terminal No. Specified Condition
1C-24 (BECU) - Body ground 10 to 14 V
NG REPAIR OR REPLACE HARNESS AND
B67854 CONNECTOR
OK
3 CHECK WIRE HARNESS (INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK
BODY ECU) - BODY GROUND)
Wire Harness Side
(a) Disconnect the 1K and 1L J/B connectors.
(b) Check the resistance between the wire harness side con-
nector and the body ground.
1K Standard:
Instrument Panel J/B Assy
Terminal No. Specified Condition
1L-16 (GND1) - Body ground
Below 1
1K-17 (GND2) - Body ground
1L
Instrument Panel J/B Assy
B67856
NG REPAIR OR REPLACE HARNESS AND
B67855 B68353 CONNECTOR
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2052
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