Page 3969 of 5135
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±835
AVENSIS REPAIR MANUAL (RM1018E)
ABS WARNING LIGHT CIRCUIT (DOES NOT LIGHT UP)
CIRCUIT DESCRIPTION
If the ECU detects trouble, it will prohibit ABS control, turn on the ABS warning light, and store the DTC.
Connect terminals Tc and CG of the DLC3 to make the ABS warning light blink and output the DTC.
0543F±04
Page 3970 of 5135
F45135
B±R
DH DA18 2Driver Side J/B
IGNWA S136
IE117 9
B±W
C11 C10Combination Meter
ABSSkid Control ECU
with Actuator
R±Y R±Y 22
17
C10
AM1
4B 4A11IG1
A 1
2 AM2
3
IK 1A
Engine Room R/B No.3 Engine Room R/B No.1 & Engine Room J/B No.1
1
3 Engine Room J/B No.41
IO ILJ15
J/C
Battery
*1: 1AZ±FSE
*2: 1CD±FTV
*3: LHD
*4: RHD(*3) (*4) (*3) (*4)B±W CA CA
J8 J26 J8 J26J/C
B±R
IE4 IP111
(*3) (*4) B±R
B (*2)B±G (*1)
B (*2)
FL MAINB±G (*1)
W±B (*3 *2)
W±B (*3 *1)A A
AAJ17
J/C
J16
J/C W±B
(*3) W±B (*4) W±B (*4)
I13
Ignition SW
46 05±836
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
Page 3971 of 5135
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±837
AVENSIS REPAIR MANUAL (RM1018E)
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.
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(ABS WARNING LIGHT)
(a)Check that ºONº and ºOFFº of the ABS warning light is shown on th\
e combination meter by the hand±
held tester.
OKREPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
NG
2 INSPECT ABS WARNING LIGHT
(a)See combination meter troubleshooting on page 71±1. NG REPAIR OR REPLACE COMBINATION METERASSEMBLY
OK
3 CHECK HARNESS AND CONNECTOR(SKID CONTORL ECU ± CMBINATION METER)
(a) Check for an open or short circuit in harness and connector between the skid \
control ECU and com-
bination meter (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
Page 3972 of 5135
05±844
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TRC OFF INDICATOR, TRC CUT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
This is the TRC control main switch. When the TRC OFF switch is pressed, TRC control goes off and the
TRC OFF indicator illuminates. Also, turn the TRC OFF indicator light to ºONº when the VSC system is at
the fail safe control. If the ignition switch is turned off, TRC control surely comes on the next time the ignition
switch is turned ON.
0543I±04
Page 3973 of 5135
F45146
Center J/BCombination MeterSkid Control ECU
With Actuator
76
CA CDR±W21
C11
TRC OFFC1117
7
IE1
B±GLG±B LG±B2
S1
WT
Driver Side J/B
7
DB
1
DN
5
DHIG1 Relay
GAUGE1
1 253
9
DA
1
DH AM1W±B
I13
Ignition SW
G±R
G±YAM1
IG11 3
Engine Room J/B No.4
(*1)
(*1)B±G
Engine Room R/B No.3
(*2)
B±L1
ED1(*2)
W 1
4D1
4B ALT
ALT 12
33
1 2
FL MAIN
BatteryJ16
J/CT9
TRC Off SW
(*4)
W±B(*4)
W±B
AAG±Y G±Y
6914 42
IE1 S1 CSW
Center J/B
10 6
C1 CA
(*3) W±B(*3)
W±B
IP
IJIL(*2)
B
*1: 1AZ±FSE
*2: 1CD±FTV*3: LHD
*4: RHD R±W
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±845
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
Page 3974 of 5135
C94394
2
3
4
5
6
7
8
9
10
+
E
05±846
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
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.
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(TRC OFF INDICATOR LIGHT)
(a)Check that ºONº and ºOFFº of the TRC OFF indicator light is shown on the combinati\
on meter by the hand±held tester.
OKREPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
NG
2INSPECT TRC OFF INDICATOR LIGHT
(a)See combination meter troubleshooting on page 71±1. NGREPAIR OR REPLACE COMBINATION METERASSEMBLY
OK
3INSPECT TRACTION CONTROL SWITCH
(a)Remove the TRC OFF switch.
(b)Disconnect the TRC OFF switch connector.
(c)Measure resistance between terminals + and E of the TRC OFF switch when the TRC OFF switch is ON and
OFF.
OK:
TRC OFF switchResistance
Pushed inContinuity
Released1M or higher
NGREPLACE TRACTION CONTROL SWITCH
OK
4CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU ± TRC OFF SWITCH)
(a)Check for an open or short circuit in harness and connector between terminal \
CSW of the skid control ECU and TRC OFF switch (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
Page 3975 of 5135
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±847
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU ± COMBINATION
METER)
(a)Check for an open or short circuit in harness and connector between the skid \
control ECU and com-
bination meter (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
Page 3976 of 5135
F45144
Combination MeterSkid Control ECU
With Actuator
Engine Room J/B No.4 Engine Room R/B No.1 & Engine Room J/B No.1
Engine Room R/B No.3Driver Side J/BI13
Ignition SW
IG2 AM2
B±R B±RB±R B±W22
C1115
C11
SlipLG8
IE1LG4
S1
CACA
J8 J26 J8 J26
(*3) (*4)
(*3) (*4)B±W18
DA2
DH
1
1A 1
12AM2
1
4A1
4B
3 3 B±G (*1) B±G (*1)FL MAIN
B (*2) B (*2)Battery 1
IE4
(*3)1
IP1
(*4)64 IGN J/CIND
*1: 1AZ±FSE
*2: 1CD±FTV*3: LHD
*4: RHD 05±848
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
SLIP INDICATOR LIGHT CIRCUIT
CIRCUIT DESCRIPTION
The SLIP indicator blinks during TRC & VSC operation.
WIRING DIAGRAM
0543J±04