TOYOTA HIGHLANDER 2001 Service Repair Manual

F45894
Stop Lamp Switch Assy:
1 2
Pushed In Free
F45562
Wire Harness Side:
S27STP
GND1
05-750
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
940 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT STOP LAMP SWITCH ASSY
(a) Disconnect the stop lamp switch assy S15 connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch conditionTester connectionSpecified condition
Switch pin free1 - 2Below 1 W
Switch pin pushed in1 - 210 kW or higher
NG REPLACE STOP LAMP SWITCH ASSY
OK
5 CHECK HARNESS AND CONNECTOR(BRAKE ACTUATOR ASSY - STOP LAMP
SWITCH ASSY) (SEE PAGE 01-36)
(a) Connect the stop lamp switch assy S15 connector.
(b) Disconnect the brake actuator assy connector.
(c) Measure the voltage according to the value(s) in the table
below.
Standard:
Switch conditionTester connectionSpecified condition
Brake pedal depressedS27-27 (STP) -
S27-32 (GND1)10 to 14 V
Brake pedal releasedS27-27 (STP) -
S27-32 (GND1)Below 1.5 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-740)

- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-751
941 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
ABS SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
The skid control ECU outputs DTCs when a speed sensor malfunction occurs or there is an open in the stop
lamp switch assy circuit of the ABS system. If ABS system has a malfunction, tire pressure warning system
will not function.
INSPECTION PROCEDURE
1 CHECK DIAGNOSTIC TROUBLE CODE OUTPUT
(a) Check that the normal code is output by ABS system (see page 05-765).
OK:
DTC is not output.
NG REPAIR CIRCUIT INDICATED BY OUTPUT
CODE
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-740)
05EZ4-02

F46777
S27
Skid Control ECU
With Actuator
Passenger Side J/B
INIT
41
GND1 J4
J/C
EB P22
Tire Pressure Warning
Reset Switch
IC42
ICB-Y
SB W-B
4J 4L6
7
W-B
32 W-B W-B
W-B
EAA 21
05-752
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
942 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TIRE PRESSURE WARNING RESET SWITCH CIRCUIT
CIRCUIT DESCRIPTION
Receiving the signal from the tire pressure warning reset switch, the skid control ECU indicates initialization
of the tire pressure warning system.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK TIRE PRESSURE WARNING RESET SWITCH (SEE PAGE 05-737)
OK:
Tire pressure warning reset switch functions normally.
NG Go to step 2
OK
CORRECT TIRE PRESSURE TO THE SPECIFIED PRESSURE, THEN INITIALIZE THE SYSTEM
05IP0-02

F44158
ON
OFF
1
2
Tire Pressure Warning Reset Switch:
F45562
Wire Harness Side:
S27
INIT GND1
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-753
943 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT TIRE PRESSURE WARNING RESET SWITCH
(a) Disconnect the tire pressure warning reset switch P22
connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch conditionSpecified condition
ONBelow 1 W
OFF10 kW or higher
NG REPLACE TIRE PRESSURE WARNING RESET
SWITCH
OK
3 CHECK HARNESS AND CONNECTOR(TIRE PRESSURE WARNING RESET
SWITCH - BRAKE ACTUATOR ASSY) (SEE PAGE 01-36)
(a) Reconnect the tire pressure warning reset switch P22
connector.
(b) Disconnect the brake actuator assy connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch conditionTester connectionSpecified condition
ONS27-41 (INIT) -
S27-32 (GND1)Below 1 W
OFFS27-41 (INIT) -
S27-32 (GND1)10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-740)

F45964
ENG- 23
W-LS27
5S27
Skid Control ECU
with Actuator
ENG+ 9 18
IC4
9
21 C12
C11 Combination Meter
Multiplex Communication Circuit ECM
E5 30
E5 24
E6 29
E6 18 ENG-
ENG+
MPX2
MPX1V RW-G
7
Y
G-B
G
Y-B TRC+
TRC-E5
E5 25
31TRC+
TRC- 8
22 S27
S27
S27 IC4
IC4
IC419
MPX+
MPX- 05-754
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
944 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TIRE PRESSURE WARNING LAMP CIRCUIT
CIRCUIT DESCRIPTION
When the tire pressure decreases, the skid control ECU illuminates the tire pressure warning lamp on the
combination meter assy.
HINT:
Refer to the ºTIRE PRESSURE WARNING LAMP CHARTº section in the ºDIAGNOSIS SYSTEMº for the tire
pressure warning lamp (see page 05-744).
WIRING DIAGRAM
05IP1-03

- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-755
945 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT COMBINATION METER ASSY(TIRE PRESSURE WARNING LAMP)
(a) Turn the ignition switch to the ON position.
(b) Check the tire pressure warning lamp.
OK:
Tire pressure warning lamp comes on for 3 or 4 seconds.
NG REPLACE COMBINATION METER ASSY
(SEE PAGE 71-18)
OK
2 CHECK DIAGNOSTIC CODE OUTPUT
(a) Check if the normal code is output by SFI system (see page 05-38 or 05-400).
OK:
No DTC output from SFI system.
NG REPAIR CIRCUIT INDICATED BY OUTPUT
CODE
OK
3 CHECK DIAGNOSTIC CODE OUTPUT
(a) Check if the normal code is output by VSC system (see page 05-765).
OK:
No DTC output from VSC system.
NG REPAIR CIRCUIT INDICATED BY OUTPUT
CODE
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-740)

05EYY-02
C52361
DLC3TS
CG
F46773
Tire Pressure Warning
Reset SwitchTire Pressure
Warning Lamp
ON
OFF
Lamp Output Pattern:

Normal Condition

System MalfunctionSwitch ON
ON
OFFSwitch
Operating
S
0.5 Sec.
0.5 Sec.
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-737
927 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TEST MODE PROCEDURE
1. TEST MODE (USING SST CHECK WIRE)
(a) Make sure the ignition switch off.
(b) Using SST, connect terminals TS and CG of the DLC3.
SST 09843-18040
(c) Turn the ignition switch to the ON position.
(d) Press the tire pressure warning reset switch.
(e) Check that the tire pressure warning lamp comes on.
HINT:
Unless (d) above is done, the tire pressure warning lamp
remains off while in test mode.
When there is a problem with the tire pressure warning
system, the tire pressure warning lamp blinks at 0.5 se-
cond intervals.
If the lamp output result is not normal, proceed to the problem
symptoms table or TS terminal circuit.
ItemSee page
Problem symptoms table05-740
TS and CG terminal circuit05-873
(f) Turn the ignition switch off.
(g) Remove the SST from the DLC3.
SST 09843-18040

F46775
Tire Pressure
Warning Lamp
Lamp Output Pattern:
ON
OFFIgnition Switch ON
3 to 4 Sec.
F46779DLC3
Hand-Held
Tester
F46773
Tire Pressure Warning
Reset SwitchTire Pressure
Warning Lamp
ON
OFF Lamp Output Pattern:

Normal Condition
Switch ON
ON
OFFSwitch
Operating
0.5 Sec.
0.5 Sec.

System Malfunction 05-738
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
928 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(h) Turn the ignition switch to the ON position.
(i) Check that the tire pressure warning lamp goes off.
(j) Initialize the tire pressure warning system
(see page 05-736).
2. TEST MODE (USING THE HAND-HELD TESTER)
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Select ºSIGNAL CHECKº, and proceed checking with the
hand-held tester.
(d) Press the tire pressure warning reset switch.
(e) Check that the tire pressure warning lamp comes on.
HINT:
Unless (d) above is done, the tire pressure warning lamp
remains off while in test mode.
When there is a problem with the tire pressure warning
system, the tire pressure warning lamp blinks at 0.5 se-
cond intervals.
If the lamp output result is not normal, proceed to the problem
symptoms table (see page 05-740).
(f) Turn the ignition switch off.

F46775
Tire Pressure
Warning Lamp
Lamp Output Pattern:
ON
OFFIgnition Switch ON
3 to 4 Sec.
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-739
929 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(g) Turn the ignition switch to the ON position.
(h) Check that the tire pressure warning lamp goes off.
(i) Initialize the tire pressure warning system
(see page 05-736).

05ESJ-05
05-2
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
192 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
TOYOTA/LEXUS nameDefinition
Toyota HCAC system, Hydro-carbon Adsorptive Catalyst
(HCAC) system, HC adsorptive three-way catalystHC adsorptive three-way catalytic converter
Variable valve timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve, OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ºAºCrankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow meter circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
EVAP VSV, Vacuum switching valve assembly No. 1, EVAP
VSV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn-board refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower-steering pressure switch
VSV for ACMActive control engine mount
Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ºAºTransmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ºAºCounter gear speed sensor