O2 sensor TOYOTA CAMRY 2000 Service Repair Manual

AB0118
R14304AB0119
H00031
ACCON
orTc
(+)
(±)
AB0117 AB0118 AB0119H01302H01303
LOCK
ACCON
or
Airbag Sensor Assembly
Tc
DI±798
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1033 Author: Date:
3 Check voltage between terminal Tc of DLC1 and body ground.
CHECK:
Measure the voltage between terminal Tc of DLC1 and body
ground.
OK:
Voltage: 10 ± 14 V
OK Check harness between terminal E1 of DLC1
and body ground.
NG
4 Check airbag sensor assembly.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Insert service wire into terminal Tc from back side as
shown in the illustration.
(e) Connect the airbag sensor assembly connector with ser-
vice wire.
(f) Connect negative (±) terminal cable to the battery.
(g) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(h) Connect service wire of terminal Tc to body ground.
CHECK:
Check operation of SRS warning light.
OK:
SRS waning light comes on.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
OK Check harness between the airbag sensor as-
sembly and DLC1.
NG
Replace airbag sensor assembly.

AB0119H01304H01305
LOCKAirbag Sensor Assembly
Tc
(+)
(±)
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±799
1034 Author: Date:
If the DTC is displayed without a DTC check procedure, perform the following
troubleshooting.
1 Check resistance between terminal Tc of airbag sensor assembly and body
ground.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
CHECK:
Check resistance between terminal Tc of the airbag sensor as-
sembly connector and body ground.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector.
OK
Replace airbag sensor assembly.

I00266
Theft Deterrent ECU
TAIL
T3
11
G±R
B BJ/C J33
G±R
10
IG1
G±RA
AJ2
J/C
G±R 1C
6
2
3
Taillight Control Relay
1
5
TAIL81S
1C
9
1B
4 Instrument Panel J/B
B±R
Light
Failure
Sensor
Turn & Clearance
Light
1F9
F4
1
FL
BLOCK
FL MAIN
Battery
B±G ALT
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±849
1084 Author: Date:
Taillight Control Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch ON and OFF at approxi-
mately 0.4 sec. intervals. This switches the taillight control relay ON and OFF, thus flashing the taillights (See
the wiring diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes OFF and the taillight control
relay switches OFF, thus stopping the taillights flashing:
(1) Unlock the front LH or RH door with key.
(2) Turn the ignition switch to ACC or ON position.
(3) Unlock the doors with the wireless door lock control system.
(4) Wait for approximately 60 seconds.
(5) Push the panic switch of the wireless door lock control system.
WIRING DIAGRAM
DI06Y±06

I00279CRUISE MAIN Indicator Light
DI1KS±03
BE4034
Indicator light
1.5 sec.0.5 sec.
ON
OFF
I00169
DLC2
Tc E 1
DI±870
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1105 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
(1) Turn the ignition switch ON.
(2) Check that the CRUISE MAIN indicator light comes
ON when the cruise control main switch is turned
ON, and that the indicator light goes OFF when the
main switch is turned OFF.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE±2) for the combination meter section.
(b) Check the DTC.
HINT:
If a malfunction occurs in the No. 1 vehicle speed sensor or ac-
tuator, etc. during cruise control driving, the ECU actuates
AUTO CANCEL of the cruise control and turns on and off the
CRUISE MAIN indicator light to inform the driver of a malfunc-
tion. At the same time, the malfunction is stored in memory as
a DTC.
(c) Output of DTC using diagnosis check wire.
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and E
1 of DLC2.
SST 09843±18020
(3) Read the DTC on the CRUISE MAIN indicator light.

N17520
(1)
(2)
(1)
No.Operation MethodCRUISE MAIN Indicator Light
Blinking PatternDiagnosis
1 Turn SET/COAST switch ON
2Turn RES/ACC switch ON
3Turn CANCEL switch ON
Turn stop light switch ON
Depress brake pedal
Turn PNP switch OFF
(Shift to except D position)
4Drive at about 40 km/h
(25 mph)or higher
Drive at about 40 km/h
(25 mph) or below
LightON
OFF
LightON
OFF
LightON
OFFSwitch ON
Switch OFF
LightON
OFFSwitch OFF
Switch ONSET/COAST switch circuit
is normal
RES/ACC switch circuit
is normal
CANCEL switch circuit
is normal
Stop light switch circuit
is normal
PNP switch circuit is
normal
Vehicle Speed Sensor is
normal
LightON
OFF LightON
OFF
1sec.
0.25 sec.0.25 sec.
Turn clutch switch OFF
(Depress clutch pedal)Clutch switch circuit
is normal
DI±874
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1109 Author: Date:
5. INPUT SIGNAL CHECK
HINT:
(1) For check No.1 ~ No.3

Turn ignition switch ON.
(2) For check No.4

Jack up the vehicle.

Start the engine.

Shift to D position.
(a) Pull the control switch to SET/COAST or RES/ACC posi-
tion and hold it down or up (1).
(b) Push the main switch ON (2).
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator
light.
(g) After performing the check, turn the main switch OFF.
HINT:
When 2 or more signals are input to the ECU, the lowest num-
bered code will be displayed first.

DI08I±08
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±875
111 0 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.
(See Page)Circuit InspectionTrouble Area
11, 15
(DI±881)Actuator Motor Circuit

Actuator motor

Harness or connector between cruise control ECU and
actuator motor

Cruise control ECU
12
(DI±883)Actuator Magnetic Clutch Circuit

STOP Fuse

Stop light switch

Actuator magnetic clutch

Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground

Cruise control ECU
14
(DI±886)Actuator Mechanical Malfunction
Actuator motor (actuator lock: motor, arm)

Cruise control ECU
21
(DI±888)Open in Vehicle Speed Sensor Circuit

Combination meter

Harness or connector between cruise control ECU and com-
bination meter, combination meter and vehicle speed sensor

Vehicle speed sensor

Cruise control ECU
23
(DI±891)Vehicle Speed Signal Abnormal
Vehicle speed sensor

Cruise control ECU
32
(DI±892)Control Switch Circuit

Cruise control switch

Harness or connector between cruise control ECU and cruise
control switch, cruise control switch and body ground

Cruise control ECU
41Cruise control ECU
Cruise control ECU
42Source voltage drop
Power source
51
(DI±895)Idle Signal Circuit

Throttle position sensor

Harness or connector between ECM and throttle position
sensor

Harness or connector between cruise control ECU and ECM

Cruise control ECU

DI08J±08
I08439
Stop Light SwitchCruise Control Actuator
 Actuator Motor
 Actuator Magnetic Clutch
Cruise Control ECUCruise Control switch
Main Switch
Control Switch
DLC2 Instrument Panel Junction Block No.1
 ECU±IG Fuse
 STOP Fuse
5S±FE engine: 1MZ±FE engine:
Vehicle Speed Sensor
Park/Neutral Position Switch Park/Neutral Position SwitchVehicle Speed Sensor
DI±876
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1111 Author: Date:
PARTS LOCATION

DI08L±13
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±879
111 4 Author: Date:
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSuspect AreaSee pageSee
page
SET not occourring or CANCEL occurring.
(DTC is Normal)
3. Main Switch Circuit
(Cruise control switch)
4. Vehicle Speed Sensor
5. Control Switch Circuit
(Cruise control switch)
6. Stop Light Switch Circuit
7. Park/Neutral Position Switch Circuit
8. Clutch Switch
9. Actuator Motor Circuit
10.Cruise Control Cable
11. Cruise Control ECU
DI±912
DI±888
DI±892
DI±898
DI±904
DI±907
DI±881
DI±918
IN±31
SET not occurring or CANCEL occurring.
(DTC dose not output)1. ECU Power Source Circuit
2. Cruise Control ECUDI±909
IN±31
Actual vehicle speed deviates above or below the set speed.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Electronically Controlled Transmission
Communication Circuit
4. Actuator Motor Circuit
5. Idle Signal Circuit
(Main throttle position sensor)
6. Cruise Control ECUDI±918
DI±891
DI±901
DI±881
DI±895
IN±31
Gear shifting frequent between 3rd O/D when driving on uphill
road. (Hurting)1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECU
DI±901
IN±31
Cruise control not cancelled, even when brake pedal is de-
pressed.
1. Cruise Control Cable
2. Stop Light Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±898
DI±881
IN±31
Cruise control not cancelled, even when transmission is shifted to
ºNº postion.
1. Cruise Control Cable
2. Park/Neutral Position Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±904
DI±881
IN±31
Cruise control not cancelled, even when clutch pedal is de-
pressed.
1. Cruise Control Cable
2. Clutch Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±907
DI±881
IN±31
Control switch does not operate.
(SET/COAST, ACC/RES, CANCEL not possible)
1. Cruise Control Cable
2. Control Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±892
DI±881
IN±31
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±891
DI±881
IN±31
Poor response is in ACCEL and RESUME modes.
1. Cruise Control Cable
2. Electronically Controlled Transmission
Communication Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±901
DI±881
IN±31
O/D does not resume, even though the road is not uphill.
1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECU
DI±901
IN±31

I00281
Cruise Control ECU
C15
G±B
2 1 34W±B
3
STOP Fuse8 Stop Light Switch
4
R±Y
Stop Lights Cruise Control Actuator

Actuator Magnetic Clutch
J7
J7AAJ/C
W±B
1J
1J
W±B
A
J/C
IG 8
7
J11Instrument
Panel J/BL
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±883
111 8 Author: Date:
DTC 12 Actuator Magnetic Clutch Circuit
CIRCUIT DESCRIPTION
This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the
signal from the ECU. If a malfunction occurs in the actuator or speed sensor, etc. during cruise control opera-
tion, the rotor shaft between the motor and control plate is released.
When the brake pedal is depressed, the stop light switch turns on, supplying electrical power to the stop light.
Power supply to the magnetic clutch is mechanically cut and the magnetic clutch is turned OFF.
When driving downhill, if the vehicle speed exceeds the set speed by 15 km/h (9 mph), the ECU turns the
safety magnet clutch OFF. If the vehicle speed later drops to within 10 km/h (6 mph), cruise control at the
set speed is resumed.
DTC No.Detection ItemTrouble Area
12Short in actuator magnetic clutch circuit.
Open (0.8 sec.) in actuator magnetic clutch circuit.
STOP Fuse
Stop light switch
Actuator magnetic clutch
Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground
Cruise control ECU
WIRING DIAGRAM
DI08N±12

I00292
Vehicle Speed Sensor
ECUCombination Meter
Cruise Control ECU
4 pulses/
1 rotation
of rotor shaft4 pulses/
1 rotation
of rotor shaft
I00282
Cruise Control ECU
12
SPDV±W V±WB
BJ15
J/CIG3
3
V±W14
Combination Meter
15
6
Speedo
±meter
P L
IJ12IJ17
P
3L
2
SI
SE
IG+
1
R±Lto GAUGE Fuse
C15
C9 C9
C10
Speed
Sensor DI±888
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1123 Author: Date:
DTC 21 Open in Vehicle Speed Sensor Circuit
CIRCUIT DESCRIPTION
The signal from the vehicle speed sensor circuit is sent to cruise control ECU as vehicle speed signal.
The rotor shaft is driven by the gear of the transmission.
For each rotation of the shaft, the vehicle speed sensor sends a 4±pulse signal through the combination
meter to the cruise control ECU (See the following installation).
This signal is converted inside the combination meter and sent as a 4±pulse signal to the cruise control ECU.
The ECU calculates the vehicle speed from this pulse frequency.
DTC No.Detection ItemTrouble Area
21Speed signal is not input to the cruise control ECU while cruise
control is set.

Combination meter

Harness or connector between cruise control ECU and com-
bination meter, combination meter and vehicle speed sensor

Vehicle speed sensor

Cruise control ECU
WIRING DIAGRAM
DI08P±12