Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 bcsy cipowers
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DI-639
DIAGNOSTICS - BODY CONTROL SYSTEM
DI6LK-03
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the Body ECU.
2001 SIENNA (RM787U)
Author : Date : 793
DI-640
DIAGNOSTICS - BODY CONTROL SYSTEM
WIRING DIAGRAM
Body ECU
(integration
relay)
1 24
B-R
IG2 I13 P/W
B-R Driver Side J/B NO.1 W-R
W-B Power Relay 2 1B
POWER
3 5
I12 Ignition Switch 5
1 2 2 1
1G
W-L AM1 IG1 B-Y 8
2 4 10
1J E
1 GAUGE
Driver Side J/B NO.1 7 IG
1K
2 AM1 1 L-R
1K 1B 4 DOOR 1
2 1 W-R
1B 1D
L-W
W L-W
Engine Room J/B NO.2
2 2 J/B NO.3
2D 2L 7 19 15
L-W
3D 3D I13 B
W-R
Driver Side
W
Fusible link J/B NO.1
1 F9 J18 J/C
Block 2
R R 1
4 INP ALT 1 1M B
A A
F8 F8
MAIN B-L Driver Side J/B NO.1
10 3
R-W
1V 1W
W-B
Engine Room J/B NO.2
Battery 3 SHORT PIN DOME 12
IJ W
2B 2J
1 2
I18643
2001 SIENNA (RM787U)
Author : Date : 794
DI-641
DIAGNOSTICS - BODY CONTROL SYSTEM
INSPECTION PROCEDURE
1 Check POWER GAUGE DOOR DOME Fuse and POWER Relay.
CHECK:
Check continuity of POWER GAUGE DOOR DOME Fuse and POWER Relay.
OK:
Continuity
NG Replace the failure fuse.
OK
2 Check voltage between terminals P/W IG B and E of Body ECU connector.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals IG and E.
OK:
Voltage: 10 - 14V
PREPARATION:
(a) Turn ignition switch OFF.
(b) Disconnect the Body ECU connector.
CHECK:
Measure voltage between terminals P/W B and E.
OK:
Voltage: 10 - 14V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-636 ).
NG
2001 SIENNA (RM787U)
Author : Date : 795
DI-642
DIAGNOSTICS - BODY CONTROL SYSTEM
3 Check wireharness and connector between Body ECU and body ground (See
page IN-31 ).
NG Repair or replace wireharness or connector.
OK
Check and repair wireharness and connector
between Body ECU and battery (See page
IN-31 ).
2001 SIENNA (RM787U)
Author : Date : 796
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