Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20tq4 terecu40
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05-1822
DIAGNOSTICS - KEY REMINDER WARNING SYSTEM
05BTQ-04
TERMINALS OF ECU
1. INSPECT INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)
Vehicle Rear Side Vehicle Front Side
1K
B6 B7 B9 B8
1L
1C
Multiplex Network
Body ECU
1K B6 B7
1L
B9 B8
1C
B69836
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2005
05-1823
DIAGNOSTICS - KEY REMINDER WARNING SYSTEM
(a) Disconnect the B6 ECU connector.
(b) Disconnect the 1C, 1K and 1L J/B connectors.
(c) Check the voltage and resistance between each terminal of the wire harness side connectors and body
ground.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
BECU (1C-24) -
W-L - Body ground
Body ground
Constant 10 to 14 V
BECU (1L-7) -
W-L - Body ground
Body ground
GND 1 (1L-16) -
W-B - Body ground
Body ground
Constant Below 1
GND 2 (1K-17) -
W-B - Body ground
Body ground
KSW (B6-21) - 10 k or higher
L-B - Body ground No key in ignition key cylinder Yes
Body ground Below 1
If the result is not as specified, there may be a malfunction on the wire harness side.
(d) Reconnect the B6 ECU connector.
(e) Reconnect the 1C, 1K and 1L J/B connectors, and check the voltage between the terminal of the con-
nector and body ground.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
DCTY (B9-14) -
R-Y - Body ground Drive side door CLOSED OPEN 10 to 14V 0 V
Body ground
If the result is not as specified, the J/B assy (body ECU) may have a malfunction.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2006
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