Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 abswebdb cic02781
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DI-289
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI6O0-02
DTC C0278 / 11 ABS SOL Relay Circuit
CIRCUIT DESCRIPTION
This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is
OK, the relay goes on.
DTC No. DTC Detecting Condition Trouble Area
Detection of any conditions from 1. through 2.:
1. 3 or more solenoids are show faulty in response and S ABS SOL relay
C0278 / 11 simultaneously solenoid supply voltage is detected S ABS SOL relay circuit
faulty. S Battery
2. SOL relay will not be switched OFF.
2001 SIENNA (RM787U)
Author : Date : 443
DI-290
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
WIRING DIAGRAM
Skid Control ECU
9 57
GR-R GR-R
ED1 V14 R+
Engine Room R/B No. 8
ABS SOL Relay
8 36
4 5 Y Y
3 3 ED1 V14 SR
W 1 3 W-L
3 3
2
3
5 ED1
R/B No. 7 ABS & VSC Actuator
2
7 2 W-L
BS V8
15 60
W-R
ABS SFLH V8 V14 SFLH
No. 3 W-B
7 58
G-O
SFLR V8 V14 SFLR
12 81
7 1 B-W
SFRH V8 V14 SFRH
1 55
B-G W-G
SFRR V8 V14 SFRR
7 ED 10 53
Y-B
2 SRLH V8 V14 SRLH
FL 3 80
ALT Block B-O
SRLR V8 V14 SRLR
1 9 61
GR-R
SRRH V8 V14 SRRH
B-L 4 59
Y-G
W-B SRRR V8 V14 SRRR
FL 8 54
Main LG-B
SRC1 V8 V14 SRC1
11 52
L-Y
SRC2 V8 V14 SRC2
14 49
LG
SMC1 V8 V14 SMC1
Battery
ED 13 50
V-W
SMC2 V8 V14 SMC2
F13450
2001 SIENNA (RM787U)
Author : Date : 444
DI-291
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
INSPECTION PROCEDURE
1 Check battery positive voltage.
OK:
Voltage: 10 - 14 V
NG Check and repair the charging system (See
page CH-2 ).
OK
2 Check voltage between terminals 1 and 2 of engine room R/B No. 8 (for ABS SOL
relay).
2 PREPARATION:
LOCK
1 Remove the ABS SOL relay from engine room R/B No. 8.
CHECK:
Measure the voltage between terminals 1 and 2 of engine room
R/B No. 8 (for ABS SOL relay).
OK:
Voltage: 10 - 14 V
Engine Room R/B
No. 8 (-) (+)
F12354
NG Check and repair harness or connector.
OK
2001 SIENNA (RM787U)
Author : Date : 445
DI-292
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
3 Check ABS SOL relay.
CHECK:
3 2 1 Check continuity between following terminals of ABS SOL
relay.
OK:
Continuity
6 5 4 Terminals 4 and 6
(Reference value 80 )
Terminals 2 and 3 Continuity
Open 2 1 Terminals 1 and 3 Open
3
Continuity
6 5 4
Continuity
Continuity 3 2 1 CHECK:
(a) Apply battery positive voltage between terminals 4 and 6.
(b) Check continuity between following terminals of ABS
Open SOL relay.
OK:
(-) 6 5 4 Terminals 2 and 3 Open
(+) Terminals 1 and 3 Continuity
F00042
NG Replace ABS SOL relay.
OK
2001 SIENNA (RM787U)
Author : Date : 446
DI-293
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
4 Check continuity between terminal 3 of engine room R/B No. 8 (for ABS SOL
relay ) and each solenoid terminal of skid control ECU.
Engine Room R/B No. 8 PREPARATION:
ABS Disconnect the connector from the skid control ECU.
SOL CHECK:
Relay Check continuity between terminal 3 of engine room R/B No. 8
and each terminals 49, 50, 52, 53, 54, 55, 58, 59, 60, 61, 80 and
3 81 of ECU harness side connector.
ABS & OK:
VSC Actuator Continuity
HINT:
Resistance of each solenoid coil.
SFLH (60), SRRH (61), SFRH (81), SMC1 (49), SMC2 (50),
SRLH (53): 8 - 9.1 at 20 ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo