1999 TOYOTA CAMRY warning

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

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

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

DI03G±04
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±501
736 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.
13.Check the DTC reconfirming that the normal code is
output.
14.IG power source circuit.
15.Speed sensor circuit.
16.Check the ABS actuator with a checker.
If abnormal, check the hydraulic circuit for leakage
(See page DI±536).
DI±493
DI±520
DI±514
BR±50
ABS does not operate efficiently
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 ABS actuator with a checker.
If abnormal, check the hydraulic circuit for leakage
(See page DI±536).
DI±493
DI±514
DI±523
BR±50
ABS warning light abnormal1. ABS warning light circuit
2. ABS ECUDI±529
DI±527
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±529
DI±532
Speed sensor signal check cannot be done1. Ts terminal circuit
2. ABS ECUDI±534
DI±527

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±527
762 Author: Date:
DTC Always ON ABS ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ONABS ECU internal malfunction is detected.
ECU

Battery
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS solenoid relay and prohibits
ABS control.
INSPECTION PROCEDURE
1 Is DTC output?
Check DTC on page DI±493.
YES Repair circuit indicated by the code output.
NO
2 Is normal code displayed?
YES Check ABS solenoid relay. Check for short cir-
cuit in harness and connector between ABS so-
lenoid relay and DLC1 (See page IN±31).
NO
3 Is ABS warning light go off?
YES Check for open or short circuit in harness and
connector between ECU±IG fuse and ABS ECU
(See page IN±31).
NO
DI03P±04

DI±528
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
763 Author: Date:
4 Check battery positive voltage.
CHECK:
Check the battery positive voltage.
OK:
10 ± 14 V
NG Check and repair the charging system
5S±FE engine: (See page CH±1)
1MZ±FE engine: (See page CH±1).
OK
5 Check ABS warning light.
PREPARATION:
(a) Disconnect the connector from the ABS ECU.
(b) Turn the ignition switch ON.
CHECK:
Check the ABS warning light goes off.
OK Check and replace ABS ECU.
NG
Check for short circuit in harness and connector between ABS warning light, DLC1, DLC2, and
ABS ECU (See page IN±31).

F07217
Engine Room R/B No. 3
ABS Solenoid Relay
3
ABS
Actuator
A4 1
2
5 BatteryGAUGE Instrument Panel J/B
J/C
J4
D
ABS ECU 33 3 3
EA34 6
ABS ECUD
IK28
R±L
II3 4
DLC1 R±L
G±B
II3 5 Short
Pin
W±B
ABS ECU W±L
G±B
C
CC R±L
R±L 1D2
7
4
R±L
A19WA IG3 12
11 G±B 4
G±B C10
C10
J/C
J29ABS Warning
Light
23
22 R±L
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±529
764 Author: Date:
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory.
After removing the short pin of the DLC1, connect terminals Tc and E
1 of the DLC1 or DLC2 to make the
ABS warning light blink and output the DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
Troubleshooting in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 3
1 Check ABS warning light.
See combination meter troubleshooting on page BE±2.
NG Repair bulb or combination meter assembly.
OK
DI03Q±03

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±531
766 Author: Date:
3 Is DTC output?
Check DTC on page DI±493.
YES Repair circuit indicated by the code output.
NO
4 Does ABS warning light go off if short pin is removed?
NO Check for short circuit in harness and connec-
tor between ABS warning light, DLC1 and ABS
ECU (See page IN±31).
YES
5 Check ABS solenoid relay (See step 2).
NG Replace ABS solenoid relay.
OK
Check for short circuit in harness and connector between DLC1 and ABS solenoid relay
(See page IN±31).