TOYOTA AVALON 2001 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 2001, Model line: AVALON, Model: TOYOTA AVALON 2001Pages: 1897, PDF Size: 26.61 MB
Page 621 of 1897
F09800
ABS Actuator
and ECU
A714
STP Driver Side J/B
BatteryJ/B No. 4
S4
Stop Light SwitchR7
Rear Combination
Light LH
G-W
14
IE1 G-W
G-W
J/B No. 3
16
4D 16
4F G-W3
3F 3
3C 5
1B 3
1D
4
1E
12R
11
1D STOP
FL Block
FL MAIN
L5
Light Failure
SensorStop
J12
J/C 1
1G W
1
F101
F6B5
IK1
7
Stop
36
G-R
B BBW-B
C
C
W-B
R8
Rear Combination
Light RH
36
G-R
G-R 2
1R-WH11
High Mounted
Stop Light
21
W-BC
C
W-B
BM ALTG-W G-W
G-W Driver Side J/B
J12
J/C DI-234
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
390 Author: Date:
2001 AVALON (RM808U)
DTC 58 Stop Light Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
58
Stop light switch circuit is open, and stop light switch volt-
age is in the level between 55 % and 75 % of the battery
voltage.Stop light switch
Stop light switch circuit
WIRING DIAGRAM
DI6NI-02
Page 622 of 1897
F00069
(+) (-)
14A7
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-235
391 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check that the stop light lights up when the brake pedal is depressed and turns off when the brake pedal
is released.
NG Repair stop light circuit (See page BE-36).
OK
2 Check voltage between terminal STP (A7 - 14) of brake actuator and body
ground.
PREPARATION:
Disconnect the connector from the brake actuator.
CHECK:
Measure the voltage between terminal A7 - 14 of brake actua-
tor harness side connector and body ground when the brake
pedal is depressed.
OK:
Voltage: 8 - 14 V
OK Check and replace ABS ECU.
NG
3 Check for open circuit in harness and connector between terminal STP of brake
actuator and stop light switch (See page IN-30).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
DI-218).
Page 623 of 1897
DI-236- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
392 Author: Date:
2001 AVALON (RM808U)
DTC 62 ABS ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
62ABS ECU continuously detects the proper operation of
ABS.ABS ECU
INSPECTION PROCEDURE
1 Is DTC output?
Check the DTC on page DI-212.
YES Repair circuit indicated by the code output.
NO
2 Is normal code displayed?
YES Check for short circuit in harness and connec-
tor between DLC1 or DLC2 and ABS ECU (See
page IN-30).
NO
3 Is ABS warning light off?
YES Check open and short circuit of the harness and
connector in the Tc circuit between ABS ECU
and DLC2 or DLC1.
NO
DI6NJ-01
Page 624 of 1897
F00067
ON
(+) (-)
15
19
16 A7
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-237
393 Author: Date:
2001 AVALON (RM808U)
4 Check voltage between terminals IG1 (A7 - 15) and GND (A7 - 16, 19) of brake
actuator connector.
PREPARATION:
Disconnect the connector from the brake actuator.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals A7 - 15 and A7
- 16, 19 of brake actuator harness side connector.
OK:
Voltage: 10 - 14 V
NG Check for open or short circuit in harness and
connector between ECU-IG fuse and IG1 of
brake actuator (See page IN-30).
OK
5 Check connection of brake actuator connector.
CHECK:
Check the connection of the brake actuator connector and check the ABS warning light goes off.
OK Repair or replace harness or connector.
NG
Check and replace ABS ECU.
Page 625 of 1897
F09805
ABS Actuator and ECU
DLC2LG-R
LG-RLG-RTc 12
A7 7
1H 3B 4
Tc 4
EB5
1I 4
133A 3G
22 II2
W-BLG-R
DLC1 LG-R
LG-R6
4H 6
4A
Tc
E13J/B No. 4
Driver Side J/B J/B No. 3
11
F10163
DLC2
Tc E1
DLC1
Tc ON
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-245
401 Author: Date:
2001 AVALON (RM808U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E1 of the DLC1 causes the ECU to display the DTC by flashing the
ABS warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Tc and E
1 of
DLC1 or terminal Tc of DLC2 and body ground.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Tc
and E
1 are connected, the ECU may be defec-
tive.
NG
DI6NN-01
Page 626 of 1897
DI-246- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
402 Author: Date:
2001 AVALON (RM808U)
2 Check for open and short circuit in harness and connector between ABS ECU
and DLC2 or DLC1, DLC2 or DLC1 and body ground (See page IN-30).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
Page 627 of 1897
F09804
ABS Actuator and ECU
LG-B LG-B
Ts 11
A7 13
IE1 3
4BLG-B LG-B DLC1
Ts
W-BJ/B No. 4
E112
4A 11
II2
16
3
EB
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-247
403 Author: Date:
2001 AVALON (RM808U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalily in the speed sensor signal which cannot be detected by the
DTC check.
Connecting terminals Ts and E
1 of the DLC1 starts the check.
WIRING DIAGRAM
DI6NO-01
Page 628 of 1897
AB0119S08096
F00446
Ts
DLC1Ts
DLC1Ts
DLC1Ts
DLC1Ts
DLC1Ts
DLC1 E
1
ON
DI-248- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
404 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Ts and E
1 of
DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Ts
and E
1 are connected, the ECU may be defec-
tive.
NG
2 Check for open and short circuit in harness and connector between ABS ECU
and DLC1, DLC1 and body ground (See page IN-30).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
Page 629 of 1897
DI6N6-01
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration DateRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
Remains ONDoes not Light Up
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
ABS does not operate.
ABS Warning Light
AbnormalABS does not operate intermittently.
ABS Check Sheet
BRAKE Warning
Light AbnormalRemains ONDoes not Light Up
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-21 1
367 Author: Date:
2001 AVALON (RM808U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 630 of 1897
DI6N8-01
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-215
371 Author: Date:
2001 AVALON (RM808U)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Using SST 09843-18020, connect the terminals Tc and E1.
If any abnormality is found when inspecting parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit listed under the code. For
details of each code, refer to the page under respective ºDTC No.º in the DTC chart.
DTC No.
(See Page)Detection ItemTrouble Area
11
(DI-219)Open or short circuit in ABS solenoid relay circuitABS solenoid relay
ABS solenoid relay circuit
13
(DI-221)Open or short circuit in ABS pump motor circuitABS motor relay
ABS motor relay circuit
21
(DI-223)Open or short circuit in brake actuatorBrake actuator
SFRR or SFRH circuit
22
(DI-223)Open or short circuit in brake actuatorBrake actuator
SFLR or SFLH circuit
23
(DI-223)Open or short circuit in brake actuatorBrake actuator
SRRR or SRRH circuit
24
(DI-223)Open or short circuit in brake actuatorBrake actuator
SRLR or SRLH circuit
31*
(DI-225)Right front wheel speed sensor signal malfunction
32*
(DI-225)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Eh d i it33*
(DI-225)Right rear wheel speed sensor signal malfunction
Each speed sensor circuit
Sensor installation
34*
(DI-225)Left rear wheel speed sensor signal malfunction
35*
(DI-225)Open circuit in right front wheel speed sensor circuitRight front, left front speed sensor
36*
(DI-225)Open circuit in left front wheel speed sensor circuit
Right front, left front s eed sensor
Each speed sensor circuit
37
(DI-230)Speed sensor rotor has wrong number of teeth on one of the 4
wheelsSpeed sensor
Sensor rotor
38*
(DI-225)Open circuit in right rear wheel speed sensor circuitRight rear, left rear speed sensor
39*
(DI-225)Open circuit in left rear wheel speed sensor circuit
Right rear, left rear s eed sensor
Each speed sensor circuit
41
(DI-231)Low and high battery positive voltage
Battery
Charging system
Power source circuit
58
(DI-234)Open circuit in stop light switch circuitStop light switch
Stop light switch circuit
62
(DI-236)Malfunction in ABS ECUABS ECU
Always ON
(DI-238)Malfunction in ABS ECUCharging system
ABS warning light circuit
*: As the DTC cannot only be erased by replacing parts, do either of the following operations.
(1) Clear DTC (See page DI-212).
(2) At a vehicle speed of 20 km/h (12 mph), drive the vehicle for 30 sec. or more.