Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 abs ci1314
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DI-229
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI041-12
DTC 13, 14 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 ABS motor relay ON and operates the ABS pump motor.
DTC No. DTC Detecting Condition Trouble Area
Detection of any conditions in 1. and 2.:
1. When pump motor relay is ON, relay contact is OFF*1
13 for 0.2 sec. or longer.
2. When pump motor relay is turned ON, relay contact is
OFF*1 for 0.5 sec. or longer. S ABS motor relay
SPPump motor voltage
t lt
Detection of any conditions in 1. and 2.:
S Pump motor lead disconnected
1. When pump motor relay is OFF, relay contact is ON*2
14 for 0.2 sec. or longer.
2. When pump motor relay is turned OFF, relay contact is
ON*2 for 2 sec. or longer.
*1 Relay contact OFF condition: BM terminal voltage is below 1.5 V.
*2 Relay contact ON condition: BM terminal voltage is 4.0 V or above.
WIRING DIAGRAM
F8 Fusible Skid Control ECU
Engine Room R/B No. 2 Engine Room J/B No. 2
Link Block
1 5
1 2 B-G 1 60A ABS 2 W-L W-R 24
2 2 2B 2L +BM
6
W-G 9
2L +BS
B-L
Engine Room J/B No. 2
FL MAIN 4 10
W-B W-B 8
2F 2J GND1
5
W-B W-B 23
2C GND2
Battery
EA EE IG
F13445
2001 SIENNA (RM787U)
Author : Date : 383
DI-230
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
INSPECTION PROCEDURE
1 Check voltage between terminals +BM and GND and terminals +BS and GND of
ABS actuator.
LOCK PREPARATION:
Disconnect the ABS actuator connector.
8 CHECK:
9 (-) Measure the voltage between terminals +BM(24) - GND(8, 23)
and terminals +BS(9) - GND(8, 23) ABS actuator harness side
connector.
(+)
OK:
23 24
Voltage: 10 - 14 V
F00661
NG Check and replace fuses.
Check and repair harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection. If the connection is normal, the ECU may be defective.
2001 SIENNA (RM787U)
Author : Date : 384
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