Page 1750 of 4592
DI03U±04
ABS Check Sheet
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration Year Registration 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. DI±538
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
773 Author: Date:
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1751 of 4592
DI03V±04
F00047
S-17-1 Iei-23-1-A
F00041
DLC2 DLC1
Tc E1
E1Tc
F00103
Normal Code
0.25 sec.
0.25 sec. 0.5 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
H07517
TOYOTA
Hand±held Tester
DLC2
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±539
774 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 2 seconds.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the ABS warning light circuit (See page DI±565).
(b) Check the DTC.
(1) Using SST, connect terminals Tc and E
1 of DLC2 or
DLC1.
SST 09843 ± 18020
(2) Turn the ignition switch ON.
(3) 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±567 or DI±565).
As an example, the blinking patterns for normal code and
codes 11 and 21 are shown on the left.
(4) Codes are explained in the code table on page
DI±542.
(5) 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.
(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.
Page 1752 of 4592
BR3890
F02201
DLC1
TsTc E1
BR3904
0.13 sec. 0.12 sec.
ON
OFF DI±540
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
775 Author: Date:
(d) Clear the DTC.
(1) Using SST, connect terminals Tc and E
1 of DLC2 or
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 3 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
HINT:
Cancellation cannot be done by removing the battery cable or
ECU±B fuse.
2. SPEED SENSOR SIGNAL
(a) Check the speed sensor signal.
(1) When the ignition switch is turned ON, check that
the ABS warning light goes on for 2 seconds.
(2) Turn the ignition switch OFF.
(3) Using SST, connect terminals Ts and E
1 of DLC1.
SST 09843 ± 18020
(4) Start the engine.
(5) 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±565).
(6) Drive vehicle straight forward.
HINT:
Drive vehicle at 45 ± 55 km/h (28 ± 34 mph) for several seconds.
If the brake is applied during the check, the check routine must
be started again.
(7) Stop the vehicle.
(8) Turn the ignition switch OFF.
(9) Disconnect the SST from terminals Ts and E
1 and,
connect the SST to terminals Tc and E
1 of DLC1.
SST 09843 ± 18020
(10) Turn the ignition switch ON.
(11) Read the number of blinks of the ABS warning light.
Page 1754 of 4592
DI03W±11
DI±542
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
777 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Using SST 09843 ±18020, connect the terminals Tc and E1.
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±546)ABS solenoid valve relay faulty
ABS solenoid valve relay
Valve supply voltage
ECU
13
(DI±548)ABS pump motor faulty
ABS motor relay
Pump motor voltage
Pump motor lead disconnected
ECU
21
(DI±550)Right front solenoid valves faultyABS actuator (right front inlet or outlet solenoid valve)
22
(DI±550)Left front solenoid valves faultyABS actuator (left front inlet or outlet solenoid valve)
23
(DI±550)Right rear solenoid valves faultyABS actuator (right rear inlet or outlet solenoid valve)
24
(DI±550)Left rear solenoid valves faultyABS actuator (left rear inlet or outlet solenoid valve)
31
(DI±552)Right front wheel speed sensor signal malfunction
32
(DI±552)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Each speed sensor circuit
33
(DI±552)Right rear wheel speed sensor signal malfunction
Each s eed sensor circuit
Sensor installation
ECU
34
(DI±552)Left rear wheel speed sensor signal malfunction
35
(DI±552)Open circuit in right front wheel speed sensor circuitRight front, left front speed sensor
Eh d i it36
(DI±552)Open circuit in left front wheel speed sensor circuit
Each speed sensor circuit
ECU
37
(DI±557)Speed sensor rotor is wrong number of teeth on one of the 4
wheelsSpeed sensor
Sensor rotor
ECU
38
(DI±552)Open circuit in right rear wheel speed sensor circuitRight rear, left rear speed sensor
Eh d i it39
(DI±552)Open circuit in left rear wheel speed sensor circuit
Each speed sensor circuit
ECU
41
(DI±558)Low battery positive voltage
Battery
Charging system regulator
Power source circuit
ECU
58
(DI±561)Open circuit in stop light switch circuit
Stop light switch
Stop light switch circuit
ECU
62
(DI±563)Malfunction in ECUECU
Page 1755 of 4592
DI03X±05
F01175
ABS Actuator
(w/ ECU, Relay)Front Speed Sensor
DLC1
DLC2Sensor Rotor
Rear Speed Sensor
Stop Light Switch ABS Warning Light
Sensor Rotor
Front Speed Sensor
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±543
778 Author: Date:
PARTS LOCATION
Page 1756 of 4592
DI1JN±03
F00050
A6
12 345678
910 1112 13 14 15
16 17 181920 21 2223 24 2526 DI±544
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
779 Author: Date:
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
+B (A6 ± 17, 18) ± GND (A6 ±
16, 19)L e W±BAlways10 ± 14
IG1 (A6 ± 15) ± GND (A6 ± 16,
19)B±R e W±BIG switch ON10 ± 14
WA (A6 ± 21) ± GND (A6 ± 16,RLWBIG switch ON, ABS warning light ONBelow 2.6WA (A6 21) GND (A6 16,
26)R±L e W±BIG switch ON, ABS warning light OFF10 ± 14
STP (A6 ± 14) ± GND (A6 ± 16,GWWBStop light switch OFFBelow 1.5STP (A6 14) GND (A6 16,
19)G±W e W±BStop light switch ON5 ± 14
Tc (A6 ± 12) ± GND (A6 ± 16,
19)LG±R e W±BIG switch ON5.7 ± 8.1
Ts (A6 ± 11) ± GND (A6 ± 16,
19)R±Y e W±BIG switch ON5.7 ± 8.1
FR+ (A6 ± 5) ± FR± (A6 ± 4)W e BIG switch ON, slowly turn right front wheelAC generation
FL+ (A6 ± 7) ± FL± (A6 ± 6)R e GIG switch ON, slowly turn left front wheelAC generation
RR+ (A6 ± 3) ± RR± (A6 ± 1)P e LIG switch ON, slowly turn right rear wheelAC generation
RL+ (A6 ± 9) RL± (A6 ± 8)Y e BRIG switch ON, slowly turn left rear wheelAC generation
Page 1757 of 4592
DI03Z±10
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±545
780 Author: Date:
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
SymptomSuspect AreaSee page
ABS does not operate
Only when 1. to 4. are all normal and the problem is still
occurring, replace the ABS ECU.
1. Check the DTC reconfirming that the normal code is
output.
2. Power source circuit
3. Speed sensor circuit
4. Check the hydraulic circuit for leakage.
DI±539
DI±558
DI±552
DI±571
ABS does not operate intermittently
Only when 1. to 4. are all normal and the problem is still
occurring, replace the ABS ECU.
1. Check the DTC reconfirming that the normal code is
output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the hydraulic circuit for leakage.
DI±539
DI±552
DI±561
DI±571
ABS warning light abnormal1. ABS warning light circuit
2. ABS ECUDI±565
DI±563
DTC check cannot be done
Only when 1. and 2. are all normal and the problem is still
occurring, replace the ABS ECU.
1. ABS warning light circuit
2. Tc terminal circuit
DI±565
DI±567
Speed sensor signal check cannot be done1. Ts terminal circuit
2. ABS ECUDI±569
DI±563
Page 1773 of 4592
F00125
MAIN
Battery ALT F4B±R
F91B
1C
STOP
B±G4
1 Instrument Panel J/B
FL Block
1 7 WA6
21S 5IK3 J28
G±WECU
J27
1RSTP
Stop Light SwitchJ/C
7
G±R
H10Light Failure
Sensor R
W±B A
R9 R11 C14
BP BL 11R
2
4
G±W G±W G±WG±W 1
Instrument
Panel J/B
2 1
G±RG±R
W±B W±B
W±B H10R9
R11
J/C
A A High
Mounted
Stop
LightRight
Stop
LightLeft
Stop
Light
J405 2
12
2
5
W±B
W±B
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±561
796 Author: Date:
DTC 58 Stop Light Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
49
Stop light switch circuit is open, and stop light switch
voltage is in the level between 65 % or more and less
than 93 % of the battery voltage.Stop light switch
Stop light switch circuit
ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check that stop light lights up when brake pedal is depressed and turns off when brake pedal is released.
NG Repair stop light circuit (See page BE±36).
OK
DI046±09
