Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 2011i cic02731
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05-407
DIAGNOSTICS - ABS WITH EBD SYSTEM 05CC1-02
DTC C0273/13 OPEN CIRCUIT IN ABS MOTOR RELAY
CIRCUIT
DTC C0274/14 B+ SHORT CIRCUIT IN ABS MOTOR RELAY
CIRCUIT
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU switches
the motor relay ON and operates the ABS pump motor.
DTC No. DTC Detecting Condition Trouble Area
With IG1 voltage 10V or below during initial check or ABS
C0273/13 control, pump motor relay is turned ON, and relay contact is
not ON for 0.2 sec. or longer. S ABS motor relay
S ABS motor relay circuit
t l i it
When pump motor relay is turned OFF, relay contact is ON
C0274/14
for 3 sec. or longer.
WIRING DIAGRAM
Skid Control ECU
FL Block with Actuator
1 1 B-R 24
W
F6 F10 S3 +BM
ABS1
1
W-B
S3 GND1
FL MAIN
W-B 23
S3 GND2
Battery ED
F45115
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 590
05-408
DIAGNOSTICS - ABS WITH EBD SYSTEM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 if you are using the hand-held tester and start from step 2 if you are not using
the hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(ABS MOTOR RELAY)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the ACTIVE TEST mode on the hand-held tester.
(d) Check the operation sound of the ABS motor individually when operating it with the hand-held tester.
OK:
The operation sound of the ABS motor should be heard.
OK REPLACE BRAKE ACTUATOR ASSY
(See page 32-43 )
NG
2 INSPECT SKID CONTROL ECU CONNECTOR(+BM TERMINAL VOLTAGE)
(a) Disconnect the skid control ECU connector.
GND1 (-) (b) Measure the voltage between terminals +BM and GND1,
2 of the skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
GND2(-) +BM (+) C58919
OK REPLACE BRAKE ACTUATOR ASSY
(See page 32-43 )
NG
3 INSPECT FUSE(ABS1 FUSE)
(a) Check continuity of the ABS1 fuse in the FL block.
OK:
Continuity
NG CHECK FOR SHORT IN ALL HARNESS AND
CONNECTOR CONNECTED FUSE AND
REPLACE FUSE(See page 01-5 )
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 591
05-409
DIAGNOSTICS - ABS WITH EBD SYSTEM
4 INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a) Measure resistance between terminal GND1, 2 of the skid
GND1 control ECU harness side connector and body ground.
OK:
Resistance: 1 or less
GND2 C58919 NG CHECK AND REPAIR HARNESS AND
CONNECTOR(GND TERMINAL - BODY
GROUND)(See page 01-37 )
OK
CHECK AND REPAIR HARNESS AND CONNECTOR(+BM TERMINAL - BATTERY)
(See page 01-37 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 592
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