Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20dwf cimg2
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05-1539
DIAGNOSTICS - COMBINATION METER 05BW1-02
MALFUNCTION IN SPEEDOMETER
WIRING DIAGRAM
S3 C10
Skid Control ECU Combination Meter Assy
17*2 J/C
12*1 16 4
35
SP1 J7 J8
GR GR-R
30
BR
IF
*1: VSC
*2: ABS
I35936
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(COMBIMATION METER)
(a) Operate the hand-held tester according to the steps on the display and perform the "ACTIVE TEST".
Item Test Details Diagnostic Note
SPEED METER 0 / 40 / 80 / 120 / 160 -
NG CHECK AND REPLACE COMBINATION METER
ASSY
OK
2 READ VALUE OF HAND-HELD TESTER(COMBINATION METER)
(a) Operate the hand-held tester according to the steps on the display and select "DATA LIST".
Item Test Details Diagnostic Note
SPEED METER Vehicle speed / Min.: 0 km/h, Max.: 255 km/h Almost same at the meter speed (When driving)
OK CHECK AND REPLACE COMBINATION METER
ASSY
NG
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1722
05-1540
DIAGNOSTICS - COMBINATION METER
3 READ VALUE OF HAND-HELD TESTER(SKID CONTROL ECU)
(a) Operate the hand-held tester according to the steps on the display and select "DATA LIST".
Item Test Details Diagnostic Note
SPD1 Vehicle speed / Min.: 0 km/h, Max.: 255 km/h -
NG GO TO BRAKE SYSTEM
OK
4 INSPECT COMBINATION METER ASSY
(REFERENCE) INSPECTION USING OSCILLOSCOPE
(a) Check the input signal waveform.
(1) Remove the combination meter assy.
(2) Connect the oscilloscope to the terminal C10-35
and C10-30 of the combination meter assy.
(3) Start the engine.
(4) Check the signal waveform.
Item Contents
C10-35 C10-30 I34622 Tool setting 5 V/ DIV, 20 ms/ DIV
Vehicle condition Driving at approx. 20Km/h
HINT:
As the vehicle speed becomes higher, the cycle of the signal
waveform becomes shorter.
OK CHECK AND REPLACE COMBINATION METER
ASSY
A05135
NG
5 CHECK HARNESS AND CONNECTOR(BETWEEN SKID CONTROL ECU ASSY
AND COMBINATION METER ASSY)
(a) Remove the combination meter.
(b) Disconnect the connector from skid control ECU.
(c) Check continuity between the terminal S3-12, 17 (SP1) of skid control ECU and the terminal C10-35
of the combination meter connector.
Standard: Continuity.
OK CHECK AND REPLACE SKID CONTROL ECU
ASSY
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1723
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