
05-524
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM 05BXR-02
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by flashing the ABS warn-
ing light.
WIRING DIAGRAM
Skid Control ECU
ECM with Actuator
25 J/C 10 8
27
LG-B LG-B
E4 J4 J3 S3 TRC+
31 26 9 22
LG-R LG-R
E4 J4 J3 S3 TRC-
Driver Side J/B Airbag Sensor Assembly Body ECU
Driver Side J/B
29 32 6 24 22 7
V R-L MPX2 R-L
MPX2 E5 1H 1E A21 A21 1E MPX1
MPX1 14
21
R-L
B7 MPX2
J19 A/C Control Assembly C10
J19
J/C Combination Meter
18 3 MPX+ 2 J/C
R-L R-L V
MPX1 E5 A9 A9 R-L
90 70
MPX- 13 33 29
V
62 32 28
D1
J18 Driver Side J/B DLC3
J20
J/C 34 14 J/C
20 W-B
P-B P-B P-B W-B
TC E4 1H 1K TC CG
19 29 13 4 51 42
IG
F45149
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 707
05-525
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
INSPECTION PROCEDURE
1 INSPECT DLC3 TERMINAL VOLTAGE(Tc TERMINAL)
(a) Turn the ignition switch ON.
DLC3 Tc
(b) Measure the voltage between terminals Tc and CG of the
DLC3.
OK: 10 to 14 V
CG
C52361
NG Go to step 4
OK
2 CHECK HARNESS AND CONNECTOR(DLC3 - ECM)
(a) Check for an open or short circuit in harness and connector between terminal Tc of the ECM and DLC3
(See page 01-37 ).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
3 CHECK HARNESS AND CONNECTOR(BODY GROUND - DLC3)
(a) Check for an open circuit in harness and connector between terminal CG of the DLC3 and body ground
(See page 01-37 ).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
4 CHECK HARNESS AND CONNECTOR(ECM - SKID CONTROL ECU)
(a) Check for an open or short circuit in harness and connector between terminal ENG+ and ENG- of the
skid control ECU and terminal ENG+ and ENG- of the ECM (See page 01-37 ).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32-46 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 708