o2 sensor TOYOTA HIGHLANDER 2001 Service Manual PDF

2005 HIGHLANDER (EWD592U)
307
B 29B 2
1B C2323 15 2A8
IK27
2C 22E3
IK3 18 IL2 1
EB2 9
IK3 2
EH A4 1
EE EDA A2 13
A 2
A 3
J 7
J 2B- R Y
SB GR
O
B- YY- G
Y- G
MG CLT
Relay
MPX2
L
W- L G W- B
BR BR BR
(
*2) (
*1)
* 1 : 3MZ- FE
* 2 : 2AZ- FE
PRE LCK1ACMG
Diode
(
Cooling Fan) Y- G
(
*1)
18 BMPX1
B 6
A 10MPX2 MPX1B 9A 21
MPX+ MPX-
OWY
Y
Y
O* 3 : w/ Navigation System
* 4 : w/o Navigation System
E 5(
A)
, E 6(
B)
, E 9(
C)
C11(
A)
, C12(
B)
DualB 9(
A)
, B10(
B)
A/C Magnetic Clutch
A/C Lock Sensor
Pr essure SW
Body ECUCombination Meter
Engine Control Module
Junction
ConnectorJunction
Connector

'05 HIGHLANDER_U (L/O 0409)
266
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Air conditioning system onÐ
Air conditioning system offÐ
The multi- information display indicates
the following information.
1. Outside temperature
2. Average vehicle speed
3. Average fuel consumption
4. Instantaneous fuel consumption
5. Driving time
6. Air conditioning system onÐThe air
conditioned temperature is displayed.
Air conditioning system offÐThe air
conditioned temperature is not dis-
played.
Every time you push the INFOº button,
the display toggles through this informa-
tion.
The displayed values in the multi- informa-
tion display indicate general driving condi-
tions. Accuracy varies with driving habits
and road conditions.
You can adjust the air conditioned temper-
ature while the multi- information is operat-
ing. 5 seconds has been passed after ad-
justing the temperature or pushing the
INFOº button, the display will be back to
the multi- information display.1. Outside temperature
(OUTSIDE TEMPº)
The outside temperature display indi-
cates the outside air temperature.
The displayed temperature ranges from
-22F (- 30C) up to 122F (50C).
If an abnormality exists in the connection
of the outside air temperature sensor,
- -Fº (- -Cº) will appear on the display.
If - -Fº (- -Cº) appears on the display,
contact your Toyota dealer.
There may be a case that - -Fº (- -Cº)
appears momentarily when the ignition is
quickly turned to ONº. It is normal if it
goes out soon.
2. Average vehicle speed
(AVG MPHº or AVG km/hº)
Average vehicle speed is calculated and
displayed based on total driving dis-
tance and total driving time with the
engine running.
The displayed value is updated every 10
seconds.
To reset the calculation, push the INFOº
button for more than 1 second.
Multi- information display

'05 HIGHLANDER_U (L/O 0409)
269
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Compass sensor
The compass sensor is in the inside
rear view mirror.
NOTICE
Do not put magnets or a metal object
on or near the inside rear view mirror
of the vehicle. Doing this may cause
malfunction of the compass sensor.
CALIBRATING THE COMPASS (deviation
calibration)
The direction display on the compass
deviates from the true direction deter-
mined by the earth's magnetic field. The
angle of deviation varies according to the
geographic position of the vehicle.
To adjust this deviation, stop the vehicle,
then push and hold the COMPº switch
until the zone number appears on the dis-
play. Then push the COMPº switch, refer-
ring to the following map to select the
number of the zone where the vehicle is.

BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
-VHigh Speed
Low Speed
CoilNS
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DTC C0200/31 RIGHT FRONT SPEED SENSOR
DTC C0205/32 LEFT FRONT SPEED SENSOR
DTC C1235/35 FOREIGN MATTER IS ATTACHED ON TIP OF
RIGHT FRONT SENSOR
DTC C1236/36 FOREIGN MATTER IS ATTACHED ON TIP OF
LEFT FRONT SENSOR
CIRCUIT DESCRIPTION
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
the ABS control system. The front and rear rotors have 48
serrations each.
When the rotors rotate, the magnetic field emitted by the perma-
nent magnet in the speed sensor generates AC voltage. Since
the frequency of this AC voltage changes in direct proportion to
the speed of the rotor, the frequency is used by the ECU to de-
tect the speed of each wheel.

DTC No.DTC Detecting ConditionTrouble Area
C0200/31
C0205/32
(1) All the following conditions continues for at least 1 se-
cond.

Vehicle speed is more than 6 mph (10 km/h).

Open or short in vehicle speed sensor signal circuit of
faulty wheel continues for 1 second or more.
(2) Momentary interruption of the sensor signal of faulty
wheel has occurred 7 times or more.
(3) Sensor signal circuit is open for 0.5 seconds.

Right front and left front speed sensor

Each speed sensor circuit

Sensor rotor

Sensor installation
C1235/35
C1236/36All the following conditions for at least 5 seconds.

Vehicle speed is more than 12 mph (20 km/h).

Vehicle speed sensor signal receives.
Right front and left front speed sensor

Each speed sensor

Sensor installation
HINT:

DTC C0200/31 and C1235/35 are for the right front speed sensor.

DTC C0205/32 and C1236/36 are for the left front speed sensor.
05F1P-08

F40566
Skid Control ECU with Actuator
2
1
1817
FL+
FL- A4
ABS Speed Sensor
Front LH
43
FR+
FR- A5
ABS Speed Sensor
Front RHS27 R-Y
LG
O
P 2
1S27
S27
S27
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WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 3 when not using the
hand-held tester.
1 READ VALUE OF HAND-HELD TESTER(FRONT SPEED SENSOR)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the DATA LIST mode on the hand-held tester.
(d) Check that there is no difference between the speed value output from the speed sensor displayed
on the hand-held tester and the speed value displayed on the speedometer when driving the vehicle.
ItemMeasurement Item /
Range (Display)Normal Condition
WHEEL SPD FR
Wheel speed sensor (FR) reading /
min.: 0 km/h (0 MPH, max.: 326 km/h
(202 MPH)
Actual wheel speed
WHEEL SPD FL
Wheel speed sensor (FL) reading /
min.: 0 km/h (0 MPH, max.: 326 km/h
(202 MPH)
Actual wheel speed
OK:
There is almost no difference from the displayed speed value.
HINT:
There is tolerance of + 10 % in the speedometer indication.
NG Go to step 3
OK

W04200
Normal Signal Waveform
1 V / Division2 m/s / DivisionGND
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2 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS
INSPECTION USING OSCILLOSCOPE
(a) Connect the oscilloscope to terminal FR+ - FR- or FL+
- FL- of the skid control ECU.
(b) Drive the vehicle at about 19 mph (30 km/h), and check
the signal waveform.
OK:
A waveform as shown in a figure should be output.
HINT:

As the vehicle speed (wheel revolution speed) increases,
a cycle of the waveform narrows and the fluctuation in the
output voltage becomes greater.

When noise is identified in the waveform on the oscillo-
scope, error signals are generated due to the speed sen-
sor rotor's scratches, looseness or foreign matter at-
tached to it.
NG Go to step 6
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

C93876
21
A4 A5
Front Speed Sensor
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3 INSPECT FRONT SPEED SENSOR
(a) Make sure that there is no looseness at the connectors'
locking part and connecting part of connector.
(b) Disconnect the speed sensor connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
LH:
Tester ConnectionSpecified Condition
A4-1 (FL-) - A4-2 (FL+)0.6 to 2.5 kW
RH:
Tester ConnectionSpecified Condition
A5-1 (FR-) - A5-2 (FR+)0.6 to 2.5 kW
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
LH:
Tester ConnectionSpecified Condition
A4-1 (FL-) - Body ground10 kW or higher
A4-2 (FL+) - Body ground10 kW or higher
RH:
Tester ConnectionSpecified Condition
A5-1 (FR-) - Body ground10 kW or higher
A5-2 (FR+) - Body ground10 kW or higher
NOTICE:
Check the speed sensor signal after replacement
(see page 05-765).
NG REPLACE FRONT SPEED SENSOR
(SEE PAGE 32-40)
OK

G26177
Skid Control ECU
(harness side connector)
Front Speed Sensor
(harness side connector)S27
A4
A5
FR+
FR- FR+ FR-
FL-FL+
FL-
FL+
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4 CHECK HARNESS AND CONNECTOR(FRONT SPEED SENSOR - SKID CONTROL
ECU)
(a) Disconnect the skid control ECU connector and the front
speed sensor connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
LH:
Tester ConnectionSpecified Condition
S27-18 (FL+) - A4-2 (FL+)Below 1 W
S27-4 (FL-) - A4-1 (FL-)Below 1 W
RH:
Tester ConnectionSpecified Condition
S27-3 (FR+) - A5-2 (FR+)Below 1 W
S27-17 (FR-) - A5-1 (FR-)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
LH:
Tester ConnectionSpecified Condition
S27-18 (FL+) - Body ground10 kW or higher
S27-4 (FL-) - Body ground10 kW or higher
RH:
Tester ConnectionSpecified Condition
S27-3 (FR+) - Body ground10 kW or higher
S27-17 (FR-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK

W04200
Normal Signal Waveform
1 V / Division2 m/s / DivisionGND
BR3795OKNG Speed Sensor
8.0 NVm
(82 kgfVcm, 71 in.Vlbf)
No Clearance
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5 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS
INSPECTION USING OSCILLOSCOPE
(a) Connect the oscilloscope to terminal FR+ - FR- or FL+
- FL- of the skid control ECU.
(b) Drive the vehicle at about 19 mph (30 km/h), and check
the signal waveform.
OK:
A waveform as shown in a figure should be output.
HINT:

As the vehicle speed (wheel revolution speed) increases,
a cycle of the waveform narrows and the fluctuation in the
output voltage becomes greater.

When noise is identified in the waveform on the oscillo-
scope, error signals are generated due to the speed sen-
sor rotor's scratches, looseness or foreign matter at-
tached to it.
NG Go to step 6
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
6 INSPECT FRONT SPEED SENSOR INSTALLATION
(a) Check the speed sensor installation.
OK:

The installation bolt is tightened properly.
Torque: 8.0 NVm (82 kgfVcm, 71 in.Vlbf)

There is no clearance between the sensor and the
front steering knuckle.
NOTICE:
Check the speed sensor signal after the replacement
(see page 05-765).
NG REPLACE FRONT SPEED SENSOR
(SEE PAGE 32-40)
OK

R00948
Speed Sensor Rotor
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7 INSPECT SPEED SENSOR TIP
(a) Remove the front speed sensor (see page 32-40).
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after the replacement (see page 05-765).
NG CLEAN OR REPAIR SPEED SENSOR
OK
8 INSPECT SPEED SENSOR ROTOR
(a) Remove the front speed sensor rotor.
(b) Check the sensor rotor serrations.
OK:
No scratches, missing teeth or foreign matter on the
rotors.
HINT:
If there is foreign matter in the rotor, remove it and check the
output waveform after reassembly.
NOTICE:
Check the speed sensor signal after the replacement
(see page 05-765).
NG CLEAN OR REPAIR SPEED SENSOR ROTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)