2001 TOYOTA HIGHLANDER fuse
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05ITC-02
05-26
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
216 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
READINESS MONITOR DRIVE PATTERN
1. PURPOSE OF THE READINESS TESTS
The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission-re-
lated components, and report any detected abnormalities with Diagnostic Trouble Codes (DTCs).
Since various components need to be monitored during different driving conditions, the OBD II system
runs separate monitoring programs called readiness monitors.
The hand-held tester's software must be version 9.0 or newer to view the readiness monitor status.
From the ºENHANCED OBD IIº menu, select ºMONITOR STATUSº to view the readiness monitor sta-
tus.
A generic OBD II scan tool can also be used to view the readiness monitor status.
When the readiness monitor status reads ºcompleteº, the necessary conditions have been met for run-
ning performance tests for that readiness monitor.
HINT:
Many state Inspection and Maintenance (I/M) programs require a vehicle's readiness monitor status to show
ºcompleteº.
The readiness monitor will be reset to ºincompleteº if:
The ECM has lost battery power or blown a fuse.
DTCs have been cleared.
The conditions for running the readiness monitor have not been met.
If the readiness monitor status shows ºincompleteº, follow the appropriate readiness monitor drive pat-
tern to change the status to ºcompleteº.
CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive
patterns.
NOTICE:
The following drive patterns are the fastest method of completing all the requirements necessary for
making the readiness monitor status read ºcompleteº.
If forced to momentarily stop a drive pattern due to traffic or other factors, the drive pattern can be
resumed. Upon completion of the drive pattern, in most cases, the readiness monitor status will
change to ºcompleteº.
Sudden changes in vehicle load and speed, such as driving up and down hills and/or sudden accel-
eration, hinder readiness monitor completion.
Page 2027 of 2572
B51850
B51851
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1917
2107 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK FUSE
(a) Check if the P FR DOOR 20 A, ECU B 7.5 A and IG1 7.5 A fuses are normal.
NG REPLACE FUSE
OK
2 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Check the power source voltage.
(1) Disconnect the master switch connector.
(2) Check the voltage of each terminal of the vehicle's
side connector of the master switch.
Standard:
Symbols (Terminal No.)ConditionSpecified Condition
CPUB (9) @ Body groundConstant10 - 14 V
BDR (10) @ Body groundConstant10 - 14 V
SIG (20) @ Body groundIgnition switch OFF " ON0 V "10 - 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Check the GND.
(1) Disconnect the master switch connector.
(2) Check the continuity between terminal 2 (GND) of
the vehicle's side connector of the master switch
and the body ground.
Standard: Continuity (constant)
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Page 2056 of 2572
B80404
2A1G IC3
BATTERY FL MAIN W W
F7
FUSIBLE
LINK BLOCKEngine Room J/B
SECURITY ECU-B
D.C.C
3
12I
1 W - L5
BR
109 INSTRUMENT PANEL J/B ASSY
2A 451DP
EE J17
J/C
P11
IL1O2 Theft Warning ECU Assy T4
+B1
+B2
SH- 13
IF12
W 4
IC3L L
LG
IF3 17
B
2 IC3
T1
Theft Deterrent
Horn B - O
1
05-2028
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
2218 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
THEFT DETERRENT HORN CIRCUIT
CIRCUIT DESCRIPTION
When the theft deterrent system is operating, the relay in the ECU turns on and off in a cycle of approximately
0.2 seconds, causing the theft warning horn to blow (see the wiring diagram below).
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK THEFT WARNING ECU ASSY (SECURITY)
(a) Remove the SECURITY fuse from the engine room J/B.
(b) Measure the resistance.
Standard: Below 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
05ITM-04
Page 2097 of 2572
05CCZ-12
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-779
969 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a malfunction code is displayed during the DTC check, check the circuit indicated by the DTC. For
details of each code, turn to the page for the respective ºDTC No.º in the DTC chart.
When U0121/94, U0123/62, U0124/95 or U0126/63 are output, inspect and repair the trouble areas
indicated by U0121/94, U0123/62, U0124/95 or U0126/63 first.
DTC chart of ABS:
DTC No.
(See Page)Detection ItemTrouble Area
C0200/31*1
(05-788)Right front wheel speed sensor signal malfunction
Right front and left front speed sensor
Each speed sensor circuit
Sensor rotor
Sensor installation
C0205/32*1
(05-788)Left front wheel speed sensor signal malfunction
Right front and left front speed sensor
Each speed sensor circuit
Sensor rotor
Sensor installation
C0210/33*1
(05-795)Right rear wheel speed sensor signal malfunction
Right rear and left rear speed sensor
Each speed sensor circuit
Sensor rotor
Sensor installation
C0215/34*1
(05-795)Left rear wheel speed sensor signal malfunction
Right rear and left rear speed sensor
Each speed sensor circuit
Sensor rotor
Sensor installation
C0226/21
(05-802)Open or short circuit in brake actuator solenoid circuit
(SFR circuit)ABS & TRAC actuator
SFRH or SFRR circuit
C0236/22
(05-802)Open or short circuit in brake actuator solenoid circuit
(SFL circuit)ABS & TRAC actuator
SFLH or SFLR circuit
C0246/23
(05-802)Open or short circuit in brake actuator solenoid circuit
(SRR circuit)ABS & TRAC actuator
SRRH or SRRR circuit
C0256/24
(05-802)Open or short circuit in brake actuator solenoid circuit
(SRL circuit)ABS & TRAC actuator
SRLH or SRLR circuit
C0273/13*1
(05-804)Open circuit in ABS MTR relay circuit
ABS No.2 fuse
ABS MTR relay
ABS MTR relay circuit
J/B No.2
C0274/14
(05-804)Short circuit in ABS MTR relay circuit
ABS No.2 fuse
ABS MTR relay
ABS MTR relay circuit
J/B No.2
C0278/11
(05-809)Open circuit in ABS SOL relay circuit
ABS No.1 fuse
ABS SOL relay
ABS SOL relay circuit
ABS & TRAC actuator
C0279/12
(05-809)Short circuit in ABS SOL relay circuit
ABS No.1 fuse
ABS SOL relay
ABS SOL relay circuit
ABS & TRAC actuator
C1225/25
(05-802)Open or short circuit in brake actuator solenoid circuit
(SMC circuit)SMF or SMR circuit
ABS & TRAC actuator
C1235/35
(05-788)Foreign matter is attached on the tip of the right front sensor
Right front and left front speed sensor
Each speed sensor
Sensor installation
Page 2098 of 2572
05-780
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
970 Author: Date:
C1236/36
(05-788)Foreign matter is attached on the tip of the left front sensor
Right front and left front speed sensor
Each speed sensor
Sensor installation
C1238/38
(05-795)Foreign matter is attached on the tip of the right rear sensor
Right rear and left rear speed sensor
Each speed sensor
Sensor installation
C1239/39
(05-795)Foreign matter is attached on the tip of the left rear sensor
Right rear and left rear speed sensor
Each speed sensor
Sensor installation
C1241/41
(05-827)Low battery positive voltage
Battery
Charging system
Power source circuit
C1243/43*1
(05-824)Malfunction in deceleration sensor (constant output)Yaw rate sensor (Deceleration sensor)
Yaw rate sensor circuit (Deceleration sensor circuit)
C1244/44
(05-824)Malfunction in deceleration sensorYaw rate sensor (Deceleration sensor)
Yaw rate sensor circuit (Deceleration sensor circuit)
C1245/45*1
(05-824)Malfunction in deceleration sensorYaw rate sensor (Deceleration sensor)
Yaw rate sensor circuit (Deceleration sensor circuit)
C1246/46*2
(05-830)Malfunction in master cylinder pressure sensorMaster cylinder pressure sensor
Master cylinder pressure sensor circuit
C1249/49
(05-832)Open circuit in stop light switch circuit
Stop lamp bulb
Stop lamp switch
Stop lamp switch circuit
C1251/51*1
(05-835)
ABS pump motor is locked
Open circuit in pump motor circuitABS & TRAC actuator
ABS & TRAC actuator circuit
C1267/67
(05-837)Open or short circuit of brake pedal load sensing switch circuitBrake pedal load sensing switch
Brake pedal load sensing switch circuit
C1361/91
(05-804)Short circuit in ABS motor fail safe relay circuit
ABS No.2 fuse
ABS MTR relay
ABS MTR relay circuit
J/B No.2
C1381/97
(05-824)Malfunction in power supply voltage yaw/deceleration sensorYaw rate sensor
Yaw rate sensor power source circuit
U0121/94
(05-2090)Malfunction in CAN communicationWire harness
Skid control ECU
U0124/95
(05-2090)Malfunction in CAN communication with deceleration sensorWire harness
Yaw rate sensor (Deceleration sensor)
*1, *2:
Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations
are performed.
*1:
(1) Drive the vehicle at 12 mph (20 km/h) for 30 seconds or more and check that the ABS warning
light goes off.
(2) Clear the DTC (see page 05-765).
*2:
(1) Keep the vehicle in a stationary condition for 5 seconds or more and depress the brake pedal
lightly 2 or 3 times.
(2) Drive the vehicle at a vehicle speed of 31 mph (50 km/h). Then depress the brake pedal strongly
for about 3 seconds.
(3) Repeat the above operation 3 times or more and check that the ABS warning light goes off.
(4) Clear the DTC (see page 05-765).
Page 2104 of 2572
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-51
241 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)P0351
(05-174)
Ignition Coil ºAº Primary/Second-
ary Circuit
Ignition system
Open or short in IGF and IGT1 to 4 circuits from ignition coil
with igniter assy to ECM
No.1 - 4 ignition coil assy
ECM
P0352
(05-174)Ignition Coil ºBº Primary/Second-
ary CircuitSame as DTC No. P0351
P0353
(05-174)Ignition Coil ºCº Primary/Sec-
ondary CircuitSame as DTC No. P0351
P0354
(05-174)Ignition Coil ºDº Primary/Sec-
ondary CircuitSame as DTC No. P0351
P0420
(05-184)Catalyst System Efficiency Be-
low Threshold (Bank 1)
Gas leakage on exhaust system
A/F sensor
Heated oxygen sensor
Exhaust manifold converter (Three way catalytic converter)
P043E
(05-190)Evaporative Emission System
Reference Orifice Clog Up
Pump module
Connector/Wire harness (Pump module - ECM)
ECM
Leakage from EVAP system
P043F
(05-190)Evaporative Emission System
Reference Orifice High Fow
Pump module
Connector/Wire harness (Pump module - ECM)
ECM
Leakage from EVAP system
P0441
(05-196)Evaporative Emission Control
System Incorrent Purge Flow
Purge VSV
Connector/wire harness (Purge VSV - ECM)
ECM
Pump module
Leakage from EVAP system
Leakage from EVAP line (Purge VSV - Intake manifold)
P0450
(05-202)Evaporative Emission Control
System Pressure sensor/SwitchPump module
ECM
P0451
(05-202)Evaporative Emission Control
System Pressure sensor Range/
PerformancePump module
Connector/Wire harness (Pump module - ECM)
ECM
P0452
(05-202)Evaporative Emission Control
System Pressure sensor/Switch
Low InputPump module
Connector/Wire harness (Pump module to ECM)
ECM
P0453
(05-202)Evaporative Emission Control
System Pressure sensor/Switch
High InputPump module
Connector/Wire harness (Pump module to ECM)
ECM
P0455
(05-21 1)Evaporative Emission Control
System Leak Detected (gross
leak)
Fuel tank cap (loose)
Leakage from EVAP line (Canister - Fuel tank)
Leakage from EVAP line (Purge VSV - Canister)
Pump module
Leakage from fuel tank
Leakage from canister
P0456
(05-21 1)Evaporative Emission Control
System Leak Detected (small
leak)
Same above
P0500
(05-216)Vehicle Speed Sensor ºAº
Combination meter
Open or short in speed sensor circuit
Vehicle speed sensor
ECM
Skid control ECU
P0503
(05-216)Vehicle Speed Sensor ºAº Inter-
mittent/Erratic/HighSame as DTC No. P0500-
P0504
(05-219)Brake Switch Correlation
Short in stop lamp switch signal circuit
STOP fuse
Stop lamp switch
ECM
-
Page 2149 of 2572
2005 HIGHLANDER (EWD592U)
18
E GLOSSARY OF TERMS AND SYMBOLS
BATTERY
Stores chemical energy and
converts it into electrical energy.
Provides DC current for the auto's
various electrical circuits.GROUND
The point at which wiring attaches to
the Body, thereby providing a return
path for an electrical circuit; without a
ground, current cannot flow.
CAPACITOR (Condenser)
A small holding unit for temporary
storage of electrical voltage.HEADLIGHTS
Current flow causes a headlight
filament to heat up and emit light. A
headlight may have either a single
(1) filament or a double (2) filament
1. SINGLE
FILAMENT
CIGARETTE LIGHTER
An electric resistance heating
element.2. DOUBLE
FILAMENT
CIRCUIT BREAKER
Basically a reusable fuse, a circuit
breaker will heat and open if too
much current flows through it.
Some units automatically reset when
cool, others must be manually reset.HORN
An electric device which sounds a
loud audible signal.
DIODE
A semiconductor which allows
current flow in only one direction.IGNITION COIL
Converts low-voltage DC current
into high-voltage ignition current for
firing the spark plugs.
DIODE, ZENERA diode which allows current flow in one
direction but blocks reverse flow only up
to a specific voltage. Above that potential,
it passes the excess voltage. This acts as
a simple voltage regulator.LIGHT
Current flow through a filament
causes the filament to heat up and
emit light.
PHOTODIODE
The photodiode is a semiconductor
which controls the current flow
according to the amount of light.LED (LIGHT EMITTING DIODE)
Upon current flow, these diodes emit
light without producing the heat of a
comparable light.
DISTRIBUTOR, IIA
Channels high-voltage current from
the ignition coil to the individual
spark plugs.METER, ANALOG
Current flow activates a magnetic
coil which causes a needle to move,
thereby providing a relative display
against a background calibration.
FUSEA thin metal strip which burns through
when too much current flows through it,
thereby stopping current flow and
protecting a circuit from damage.
FUSIBLE LINK
METER, DIGITAL
Current flow activates one or many
LED's, LCD's, or fluorescent
displays, which provide a relative or
digital display.
FUEL
FUSIBLE LINK
A heavy-gauge wire placed in high
amperage circuits which burns through on
overloads, thereby protecting the circuit.
The numbers indicate the crosssection
surface area of the wires.(for Medium Current Fuse)
(for High Current Fuse or
Fusible Link)MOTOR
A power unit which converts
electrical energy into mechanical
energy, especially rotary motion.
M
Page 2163 of 2572
![TOYOTA HIGHLANDER 2001 Service Repair Manual [N]
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2005 HIGHLANDER (EWD592U)
6
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Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is](/manual-img/14/57457/w960_57457-2162.png "TOYOTA HIGHLANDER 2001 Service Repair Manual [N]
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2005 HIGHLANDER (EWD592U)
6
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is")
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2005 HIGHLANDER (EWD592U)
6
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
S6 Stop Light SW
2-1 : Closed with the brake pedal depressed
L4 Light Failure Sensor
1, 2, 7-Ground : Approx. 12 volts with the stop light SW on
4, 8-Ground : Approx. 12 volts with the ignition SW at ON position
11-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
C734L436R737
H1736R637S635
: Relay Blocks
CodeSee PageRelay Blocks (Relay Block Location)
118R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
IB20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C22Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
: Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE142Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV150Luggage Room Wire and Floor Wire (Luggage Room Left)
: Ground Points
CodeSee PageGround Points Location
BL50Under the Left Center Pillar
BO50Back Panel Center
: Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I544Cowl WireB1850Luggage Room Wire
System Outline
Service Hints