Page 2913 of 4770

DI03C±03
F00047
F00006
DLC1Short Pin
S-17-1 Iei-23-1-A
F00041
DLC2 DLC1
Tc E1
E1Tc
R01346
Normal Code
0.25 sec.
0.25 sec. 2 sec.
ON
OFF
ON
OFF0.5 sec. 0.5 sec.
Code 11 and 21
4 sec.1.5 sec.
2.5 sec.
Code 11 Code 21
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±493
728 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
When the ignition switch is turned ON, check that the ABS
warning light goes on for 3 seconds.
HINT:
If the indicator check result is not normal, proceed to
troubleshooting for the ABS warning light circuit
(See page DI±529).
(b) Check the DTC.
(1) Disconnect the short pin from DLC1.
(2) Using SST, connect terminals Tc and E
1 of DLC2 or
DLC1.
SST 09843 ± 18020
(3) Turn the ignition switch ON.
(4) Read the DTC from the ABS warning light on the
combination meter.
HINT:
If no code appears, inspect the diagnostic circuit or ABS
warning light circuit (See page DI±532 or DI±529).
As an example, the blinking patterns for normal code and
codes 11 and 21 are shown on the left.
(5) Codes are explained in the code table on page
DI±497.
(6) After completing the check, disconnect terminals Tc
and E
1, and turn off the display.
If 2 or more malfunctions are indicated at the same time the low-
est numbered DTC will be displayed 1st.
Page 2914 of 4770

H07517
TOYOTA
Hand±held Tester
DLC2
BR3890
F00006DLC1Short Pin
N09348
Hand±held Tester
Break±out±boxECUTOYOTA
TOYOTA DI±494
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
729 Author: Date:
(c) Using TOYOTA hand±held tester, check the DTC.
(1) Hook up the TOYOTA hand±held tester to the
DLC2.
(2) Read the DTC by following the prompts on the tes-
ter screen.
Please refer to the TOYOTA hand±held tester oper-
ator 's manual for further details.
(d) Clear the DTC.
(1) Using SST, connect terminals Tc and E
1 of DLC2 or
DLC1 and remove the short pin from DLC1.
SST 09843 ± 18020
(2) Turn the ignition switch ON.
(3) Clear the DTC stored in ECU by depressing the
brake pedal 8 or more times within 5 seconds.
(4) Check that the warning light shows the normal
code.
(5) Remove the SST from the terminals of DLC2 or
DLC1.
SST 09843 ± 18020
(6) Connect the short pin to DLC1.
(e) Using TOYOTA break±out±box and TOYOTA hand±held
tester, measure the ECU terminal values.
(1) Hook up the TOYOTA hand±held tester and
TOYOTA break±out±box to the vehicle.
(2) Read the ECU input/output values by following the
prompts on the tester screen.
HINT:
TOYOTA hand±held tester has a ºSnapshotº function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand±held tester/TOYOTA break±
out±box operator's manual for further details.
Page 2915 of 4770

F02201
DLC1
TsTc E1
BR3904
0.13 sec. 0.13 sec.
ON
OFF
BR3893
Malfunction Code (Example Code 72, 76)
72 67
ON
OFF
0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.1.5 sec.
2.5 sec.4 sec.
Repeat
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±495
730 Author: Date:
2. SPEED SENSOR SIGNAL
(a) Check the speed sensor signal.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and E
1 of DLC1.
SST 09843 ± 18020
(3) Start the engine.
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI±529).
(5) Drive vehicle straight forward.
HINT:
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
(6) Stop the vehicle.
(7) Using SST, connect terminals Tc and E
1 of DLC1.
SST 09843 ± 18020
(8) Read the number of blinks of the ABS warning light.
HINT:
See the list of DTC shown on the next page.
If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.
(9) After doing the check, disconnect the SST from ter-
minals Ts and E
1, Tc and E1 of DLC1, and turn igni-
tion switch OFF.
SST 09843 ± 18020
Page 2916 of 4770

H07517
TOYOTA
Hand±held Tester
DLC2 DI±496
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
731 Author: Date:
(b) Using TOYOTA hand±held tester, check the DTC.
(1) Do step 1. ~ 6. on the previous page.
(2) Hook up the TOYOTA hand±held tester to the
DLC2.
(3) Read the DTC by following the prompts on the tes-
ter screen.
Please refer to the TOYOTA hand±held tester oper-
ator 's manual for further details.
DTC of speed sensor check function:
Code No.DiagnosisTrouble Area
71Low output voltage of right front speed sensor
Right front speed sensor
Sensor installation
Right front speed sensor rotor
72Low output voltage of left front speed sensor
Left front speed sensor
Sensor installation
Left front speed sensor rotor
73Low output voltage of right rear speed sensor
Right rear speed sensor
Sensor installation
Right rear speed sensor rotor
74Low output voltage of left rear speed sensor
Left rear speed sensor
Sensor installation
Left rear speed sensor rotor
75Abnormal change in output voltage of right front speed sen-
sorRight front speed sensor rotor
76Abnormal change in output voltage of left front speed
sensorLeft front speed sensor rotor
77Abnormal change in output voltage of right rear speed
sensorRight rear speed sensor rotor
78Abnormal change in output voltage of left rear speed sensorLeft rear speed sensor rotor
Page 2917 of 4770

DI03D±03
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±497
732 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Using SST 09843 ±18020, connect the terminals Tc and E1, and remove the short pin.
If any abnormality is not found when inspection parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit listed for the code. For details
of each code, turn to the page referred to under the ºSee pageº for respective ºDTC No.º in the DTC
chart.
DTC No.
(See Page)Detection ItemTrouble Area
11
(DI±502)Open circuit in ABS solenoid relay circuitABS solenoid relay
12
(DI±502)Short circuit in ABS solenoid relay circuit
ABS solenoid relay
ABS solenoid relay circuit
13
(DI±507)Open circuit in ABS motor relay circuitABS motor relay
14
(DI±507)Short circuit in ABS motor relay circuit
ABS motor relay
ABS motor relay circuit
21
(DI±511)Open or short circuit in 2±position solenoid circuit for right front
wheelABS actuator
SFRR or SFRH circuit
22
(DI±511)Open or short circuit in 2±position solenoid circuit for left front
wheelABS actuator
SFLR or SFLH circuit
23
(DI±511)Open or short circuit in 2±position solenoid circuit for right rear
wheelABS actuator
SRRR or SRRH circuit
24
(DI±511)Open or short circuit in 2±position solenoid circuit for left rear
wheelABS actuator
SRLR or SRLH circuit
31
(DI±514)Right front wheel speed sensor signal malfunction
32
(DI±514)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Eh d i it33
(DI±514)Right rear wheel speed sensor signal malfunction
Each speed sensor circuit
Speed sensor rotor
34
(DI±514)Left rear wheel speed sensor signal malfunction
33, 34
(DI±519)Rear speed sensor rotor faulty
Rear axle hub
Right rear, left rear speed sensor
Rear speed sensor circuit
41
(DI±520)Power source voltage down
Battery
Charging system
Power source circuit
49
(DI±523)Open circuit in stop light switch circuitStop light switch
Stop light switch circuit
51
(DI±525)Pump motor is lockedABS pump motor
Always ON
(DI±527)Malfunction in ECUECU
Battery
Page 2918 of 4770
DI03E±03
F01172
Sensor Rotor
ABS Warning Light
ABS ECU
DLC 1
Front Speed Sensor
ABS Actuator
ABS Solenoid
Relay
ABS Motor Relay
Sensor RotorFront Speed
Sensor
Stop Light SwitchDLC 2
Rear Speed Sensor DI±498
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
733 Author: Date:
PARTS LOCATION
Page 2919 of 4770

DI1JL±02
F07155
A18
A19
1 2 3 4 856 7 9 10 11 12 13
14 15 16 17 18 19 20 21 22 1 2 3 4 5 6
7 8 9 10 11 1223 24 25 26
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±499
734 Author: Date:
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG1 (A19 ± 13) ± GND (A19 ±
12, 25)B±R e W±BIG switch ON10 ± 14
R+ (A19 ± 26) ± SR (A18 ± 7)GR±R eGRIG switch ON, ABS warning light OFF9 ± 14
R+ (A19 ± 26) ± MR (A18 ± 1)GR±R eGR±LIG switch ONBelow 1.0
SFRR (A19 ± 1) ± GND (A19 ±
12, 25)W±R e W±BIG switch ON, ABS warning light OFF10 ± 14
SFRH (A19 ± 2) ± GND (A19 ±
12, 25)R±B e W±BIG switch ON, ABS warning light OFF10 ± 14
SFLR (A18 ± 6) ± GND (A19 ±
12, 25)W±L e W±BIG switch ON, ABS warning light OFF10 ± 14
SFLH (A18 ± 5) ± GND (A19 ±
12, 25)L±B e W±BIG switch ON, ABS warning light OFF10 ± 14
SRRR (A18 ± 12) ± GND (A19
± 12, 25)R±G e W±BIG switch ON, ABS warning light OFF10 ± 14
SRRH (A18 ± 11) ± GND (A19
± 12, 25)W±R e W±BIG switch ON, ABS warning light OFF10 ± 14
SRLR (A19 ± 14) ± GND (A19 ±
12, 25)LG±B e W±BIG switch ON, ABS warning light OFF10 ± 14
SRLH (A19 ± 15) ± GND (A19 ±
12, 25)G±Y e W±BIG switch ON, ABS warning light OFF10 ± 14
WA (A19 ± 11) ± GND (A19 ±GBWBIG switch ON, ABS warning light ONBelow 2.0WA (A19 11 ) GND (A19
12, 25)G±B e W±BIG switch ON, ABS warning light OFF10 ± 14
STP (A19 ± 5) ± GND (A19 ±GWWBStop light switch OFFBelow 1.5STP (A19 5) GND (A19
12, 25)G±W e W±BStop light switch ON8 ± 14
D/G (A19 ± 24) ± GND (A19 ±
12, 25)R±L e W±BIG switch ON, ABS warning light OFF10 ± 14
Tc (A19 ± 8) ± GND (A19 ± 12,
25)LG±R e W±BIG switch ON8 ± 14
Ts (A19 ± 21) ± GND (A19 ± 12,
25)R±Y e W±BIG switch ON8 ± 14
FR+ (A18 ± 3) ± FR± (A18 ± 9)W e BIG switch ON, slowly turn right front wheelAC generation
FL+ (A18 ± 8) ± FL± (A18 ± 2)R e GIG switch ON, slowly turn left front wheelAC generation
RR+ (A19 ± 10) ± RR± (A19 ±
23)W eBIG switch ON, slowly turn right rear wheelAC generation
Page 2920 of 4770
DI±500
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
735 Author: Date:
RL+ (A19 ± 22) ± RL± (A19 ± 9)R e GIG switch ON, slowly turn left rear wheelAC generation
MT (A18 ± 10) ± GND (A18 ±
12, 25)R±W e W±BIG switch ONBelow 1.5