Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 202xg cicipkb
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05-1 157
DIAGNOSTICS - LIGHTING SYSTEM 05BVU-01
PARKING BRAKE SWITCH CIRCUIT
CIRCUIT DESCRIPTION
The Multiplex network body ECU receives parking brake switch signal.
WIRING DIAGRAM
Multiplex Network
Body ECU
Driver Side Junction Block
P6
Parking Brake Switch J/C
17 3 10
R-W R-W
J5 J6 1K PKB
1 19
E68124
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1340
05-1 158
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 READ VALUE OF 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 items below in the DATA LIST, and read the displays on the hand-held tester.
BODY NO.1:
Measurement Item/
Item Normal Condition Diagnostic Note
Display (Range)
Parking brake SW sig- ON: Parking brake pedal is ON
PARKING BRAKE SW -
nal/ON or OFF OFF: Parking brake pedal is OFF
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-1 131)
NG
2 INSPECT PARKING BRAKE SWITCH ASSY
(a) Check that there is continuity between the terminal and the body ground when parking brake switch
is operated.
Standard:
ON (When shaft is pressed): No continuity
OFF (When shaft is not pressed): Continuity
NG REPLACE PARKING BRAKE SWITCH ASSY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1341
05-1 159
DIAGNOSTICS - LIGHTING SYSTEM
3 CHECK HARNESS AND CONNECTOR
(a) Disconnect the 1K connector from instrument panel junction block assy.
(b) Check the continuity between the terminal 1K-10 of the instrument panel junction block assy connec-
tor side and body ground.
Standard:
Tester connection Condition Specified condition
1K-10 - Body ground Shaft of parking brake switch is pressed No continuity
1K-10 - Body ground Shaft of parking brake switch is not pressed Continuity
1K
E67348
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-1 131)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1342
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