TOYOTA CAMRY 1999 Service Repair Manual

F00095
11ECU
R±Y
AA6 IK2
3
J/CDLC1
BR
Ts
J22: (1MZ±FE)16
EC5
E
1Ts
BRAII38
J23: (5S±FE)R±Y
11ECU
R±Y
AA6 IK2
3
J/CDLC1
BR
Ts
J22: (1MZ±FE)165
E
1Ts
BRAII38
J23: (5S±FE)R±Y B±Y (1MZ±FE)
LG (5S±FE)
AB0119S08096
F00446DLC1 DLC1
DLC1
DLC1
DLC1
Ts
DLC1 E1
ON
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±569
804 Author: Date:
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected with
the DTC check.
Connecting terminals Ts and E
1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure 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
DI04A±08

DI±570
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
805 Author: Date:
2 Check for open and short circuit in harness and connector between ABS ECU
and DLC1, DLC1 and body ground (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.

F00072
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±571
806 Author: Date:
Check for Fluid Leakage
Check for fluid leakage from actuator or hydraulic lines.
DI04B±10

DI04C±02
Check and Clear DTC (Precheck)
P.
DI±574
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Symptom Simulation
P. IN±21
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI±574
Sensor CheckCircuit Inspection
DTC Chart
P. DI±578 Malfunction codeProblem Symptoms Table
P. DI±583
Check for Fluid Leakage
P.DI±623
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 2, 5, 8, 9, 11:Diagnostic steps permitting the use of the
TOYOTA hand±held tester or TOYOTA
break±out±box.
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI±573
Problem Symptom Confirmation
P.DI±584 ~ DI±620 DI±572
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
807 Author: Date:
ABS & TRACTION CONTROL SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following pages.

DI04D±02
ABS & TRAC 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
Check ItemNormal
ABS does not operate.
ABS Warning Light
AbnormalABS does not operate efficiently.
Malfunction
Indicator LightMalfunction Code (Code )
TRAC does not operate. (Wheels spin when starting rapidly.)
TRAC OFF Indicator
Light Abnormal
SLIP Indicator
Light Abnormal
Remains ON
Remains ON Does not Light UpBlinks Does not Light Up
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±573
808 Author: Date:
CUSTOMER PROBLEM ANALYSIS CHECK

DI04E±04
F00075
S-17-1 Iei-23-1-A
F00041
DLC2
Tc E
1
DLC1
E
1Tc
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
DI±574
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
809 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
When the ignition switch is turned ON, check that the ABS
warning light, TRAC OFF indicator light and SLIP indica-
tor light go on for 3 seconds.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the ABS warning light circuit, TRAC OFF indicator
light circuit and SLIP indicator light circuit
(See page DI±612, DI±617, DI±620).
(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 and
TRAC OFF indicator light on the combination meter.
HINT:
If no code appears, inspect the diagnostic circuit or ABS warn-
ing light circuit, TRAC OFF indicator light circuit
(See page DI±621 or DI±612, DI±617).
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±578.
(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.

H07517
TOYOTA
Hand±held Tester
DLC2
BR3890
N09348
Hand±held Tester
Break±out±boxECUTOYOTA
TOYOTA
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±575
810 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.
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
(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.

F02201
DLC1
TsTc E
1
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 DI±576
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
811 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±612).
(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 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.

If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
(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

H07517
TOYOTA
Hand±held Tester
DLC2
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±577
812 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
sensor
Right front speed sensor rotor
76Abnormal change in output voltage of left front speed
sensor
Left front speed sensor rotor
77Abnormal change in output voltage of right rear speed
sensor
Right rear speed sensor rotor
78Abnormal change in output voltage of left rear speed sensor
Left rear speed sensor rotor

DI04F±04
DI±578
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
813 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±584)Open circuit in ABS & TRAC solenoid relay circuit
ABS & TRAC solenoid relay
ABS & TRAC l id l i it12
(DI±584)Short circuit in ABS & TRAC solenoid relay circuit

ABS & TRAC solenoid relay circuit

ECU
13
(DI±587)Open circuit in ABS & TRAC motor relay circuit
ABS & TRAC motor relay
ABS & TRAC t l i it14
(DI±587)Short circuit in ABS & TRAC motor relay circuit

ABS & TRAC motor relay circuit

ECU
21
(DI±590)Open or short circuit in right front solenoid circuit

ABS & TRAC actuator

SFRR or SFRH circuit

ECU
22
(DI±590)Open or short circuit in left front solenoid circuit

ABS & TRAC actuator

SFLR or SFLH circuit

ECU
23
(DI±590)Open or short circuit in right rear solenoid circuit

ABS & TRAC actuator

SRRR or SRRH circuit

ECU
24
(DI±590)Open or short circuit in left rear solenoid circuit

ABS & TRAC actuator

SRLR or SRLH circuit

ECU
25
(DI±590)Open or short circuit in SMC1 circuit

ABS & TRAC actuator

SMC1 circuit

ECU
26
(DI±590)Open or short circuit in SMC2 circuit

ABS & TRAC actuator

SMC2 circuit

ECU
27
(DI±590)Open or short circuit in SRC1 circuit

ABS & TRAC actuator

SRC1 circuit

ECU
28
(DI±590)Open or short circuit in SRC2 circuit

ABS & TRAC actuator

SRC2 circuit

ECU
31
(DI±593)Right front wheel speed sensor signal malfunction
32
(DI±593)Left front wheel speed sensor signal malfunction
Right front, left front, right rear and left rear speed sensor

Each speed sensor circuit
33
(DI±593)Right rear wheel speed sensor signal malfunction

Each s eed sensor circuit

Speed sensor rotor

ECU
34
(DI±593)Left rear wheel speed sensor signal malfunction
41
(DI±598)Low battery positive voltage or abnormally high battery
positive voltage

Battery

Charging system

Power source circuit

ECU