O2 sensor TOYOTA CAMRY 2000 Service Repair Manual

F00116
Right Front
Speed Sensor
Left Front
Speed Sensor
Right Rear
Speed Sensor
Left Rear
Speed Sensor2
1A18
A19 12
1
2
2 1A18
A18
A18
A19
A19
A19ABS ECU
W
B
R
G
B
G RB WG R
IK2
IL1
ID1IK2
ID1 IL11
6
2
1
3
983
FR+
FR±
FL+
FL±
RR+
RR±
RL+
RL±Right Front
Speed Sensor
Left Front
Speed Sensor
Left Rear
Speed Sensor2
1A18
A19 12
1
2
2 1A18
A18
A18
A19
A19
A19ABS ECU
W
B
R
G
W
G RB WG R
IK2
IL1
ID1IK2
ID1 IL11
6
2
1
3
99
93
FR+
FR±
FL+
FL±
RR+
RR±
RL+
RL± 2
10
23
R
G22
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±515
750 Author: Date:
WIRING DIAGRAM

R14205
1
2
R14213
12 12
12
12
12
1212
DI±516
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
751 Author: Date:
INSPECTION PROCEDURE
1 Check speed sensor.
Front:
PREPARATION:
(a) Remove the front fender liner.
(b) Disconnect the speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 0.6 ± 2.5 kW
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 MW or higher
Rear:
PREPARATION:
(a) Remove the seat cushion and side seatback.
(b) Disconnect the speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 1.2 ± 2.3 kW
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 MW or higher
NG Replace speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI±493).
OK

BR3795
OK NG OK NG
OK NGOK NG
W04200
Normal Signal Waveform
1 V / Division2 m/s / DivisionGND
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±517
752 Author: Date:
2 Check for open and short circuit in harness and connector between each speed
sensor and ECU (See page IN±31).
NG Repair or replace harness or connector.
OK
3 Check speed sensor installation.
CHECK:
Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and steering
knuckle or rear axle carrier.
NG Replace speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI±493).
OK
4 Check speed sensor and sensor rotor serrations.
REFERENCE: INSPECTION USING OSCILLOSCOPE
PREPARATION:
(a) Remove the ABS ECU.
(b) Connect the oscilloscope to the terminals FR+, FL+, RR+
or RL+ and GND of the ABS ECU.
CHECK:
Drive the vehicle with about 30 km/h (19 mph), and check the
signal waveform.
OK Check and replace ABS ECU.
NG

R00948
R00947
DI±518
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
753 Author: Date:
5 Check sensor rotor and sensor tip.
Front:
PREPARATION:
Remove the front drive shaft (See page SA±17 or SA±26).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth or foreign objects.
PREPARATION:
Remove the front speed sensor (See page BR±68).
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
Rear:
PREPARATION:
Remove the axle hub (See page SA±52).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth or foreign objects.
PREPARATION:
Remove the rear speed sensor (See page BR±71).
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
NG Replace sensor rotor or speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI±493).
OK
Check and replace ABS ECU.

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±519
754 Author: Date:
DTC 33, 34 Rear Speed Sensor Rotor Faulty
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
33, 34
The condition that the both rear side wheels' speed is
lower than the front wheels' speed at 20 km/h (12 mph) or
more for 20 sec. or more when the IG switch turns ON
and OFF , which is repeated in a sequence more than 8
times.

Rear axle hub

Right rear, left rear speed sensor

Rear speed sensor circuit
INSPECTION PROCEDURE
1 Check rear axle hub (See page SA±9).
NG Replace rear axle hub.
OK
2 Check rear speed sensor (See page DI±514).
NG Replace rear speed sensor.
OK
3 Check for open and short circuit in harness and connector between rear speed
sensor and ECU (See page IN±31).
NG Repair or replace harness and connector.
OK
Check and replace ABS ECU.
DI03L±03

F00124
Battery MAIN B±GF4 F91
ALT FL Block
B±R STOP Instrument Panel J/B
1C1B4
7Stop Light
Switch
2G±W
1R 1S5J27 J28J/C
Light Failure
Sensor
J/C
J40
BL
BP W±BG±W
A195
STPABS ECU
R
G±R
High
Mounted
Stop
LightRight
Stop
LightLeft
Stop
Light
A 1Instrument
Panel J/B
G±R W
11R
2 4
G±W
G±R
W±B
W±B
W±B AAC
W±B W±BH10 R11
R9
H10R9
R11 2
122
5 5 G±W
1
2 7
Under the
Left Center
PillarBack Panel
Center
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±523
758 Author: Date:
DTC 49 Stop Light Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
49
ABS ECU terminal IG1 voltage is 9.5 V to 18.5 V and ABS
is in non±operation, the open circuit of the stop light switch
circuit continues for 0.3 sec. or more.
Stop light switch

Stop light switch circuit
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±37).
OK
DI03N±03

F00172
J/C
EC BRA
ABR
3
16 DLC1
Ts E
1
R±Y
II38
R±Y
A198
TsABS ECU
J22: (1MZ±FE)
J23: (5S±FE)
J/C
BRA
ABR
3
16 DLC1
Ts E
1
R±Y
II38
R±Y
A198
TsABS ECU
J22: (1MZ±FE)
J23: (5S±FE)
AB0119S08096
F00446DLC1 DLC1
DLC1
DLC1DLC1
Ts
DLC1 E1
ON
DI±534
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
769 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
DI03S±03

DI051±04
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI±538
Check and Clear DTC (Precheck)
P.
DI±539
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN±21
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI±539
Sensor CheckCircuit Inspection
P. DI±546 ~ DI±569
DTC Chart
P. DI±542 Malfunction codeProblem Symptoms Table
P. DI±545
Check for Fluid Leakage
P. DI±571
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 2, 5, 9, 11:Diagnostic steps permitting the use of the
TOYOTA hand±held tester.
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±537
772 Author: Date:
ANTI±LOCK BRAKE SYSTEM (BOSCH Made)
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following pages.

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.

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
H07517
TOYOTA
Hand±held Tester
DLC2
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±541
776 Author: Date:
HINT:

See the list of DTC shown at the bottom of this 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.
(12) After doing the check, disconnect the SST from ter-
minals Tc and E
1 of DLC1, and turn ignition switch
OFF.
SST 09843 ± 18020
(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