engine TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
26
F RELAY LOCATIONS
: Engine Room J/BEngine Compartment Left (See Page 20)

2005 HIGHLANDER (EWD592U)
34
F RELAY LOCATIONS
[Engine Room J/B Inner Circuit]

'05 HIGHLANDER_U (L/O 0409)
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Where to obtain the
Repair Manual
The repair manual for HIGHLANDER may be pur-
chased from any Toyota dealer or the Material Dis-
tribution Center. To purchase the repair manual,
please contact your Toyota dealer or call the Mate-
rial Distribution Center toll- free at
1- 800- 622- 2033.
Maintenance procedures for the engine,
chassis, body, electrical system, and more,
are clearly explained and illustrated.
Periodic maintenance and tune-up
Periodic maintenance and tune- up helps to prevent
small problems from growing into larger ones later on.
The repair manual outlines exactly what maintenance
is required and clearly explains how to do the work
yourself step- by- step.
Areas covered include such things as spark plug re-
placement, valve clearance adjustment and engine oil
and filter replacement.

F46317
Instrument Panel J/BSkid Control ECU
with Actuator
F7
FL Block I15
Ignition SWPassenger Side J/B
4
1
FL MAIN IG1
Battery 4JS27BZ
630
B 1C 1DV8
VSC Warning
Buzzer ECU-IG
W8
1A AM1
W
2 710
ALT4M
1 AM1G
1C
2
11 2
BR-WIC420
Y G
4 2O
05-866
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1056 Author
: Date
:
SKID CONTROL BUZZER CIRCUIT
CIRCUIT DESCRIPTION
The skid control buzzer sounds and Slip Indicator blinking during VSC operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the
hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(SKID CONTROL BUZZER)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the item ºVSC/BR WARN BUZº in the ACTIVE TEST and operate the skid control buzzer on
the hand-held tester.
ItemVehicle Condition / Test DetailsDiagnostic Note
VSC / BR WARN BUZTurns VSC / BRAKE warning buzzer ON / OFFBuzzer can be heard
(d) Check that skid control buzzer sounds by operating with the hand-held tester.
OK:
The skid control buzzer sounds in accordance with operation of the hand-held tester.
NG Go to step 2
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
05CDL-18

05-864
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1054 Author
: Date
:
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the
hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(SLIP INDICATOR LIGHT)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the item ºSLIP INDI LIGHTº in the ACTIVE TEST and operate the SLIP indicator light on the
hand-held tester.
ItemVehicle Condition / Test DetailsDiagnostic Note
SLIP INDI LIGHTTurns SLIP indicator light ON / OFFObserve combination me-
ter
(d) Check that ºONº and ºOFFº of the SLIP indicator light are indicated on the combination meter when
using the hand-held tester.
OK:
Turn the SLIP indicator light on or off in accordance with the hand-held tester.
NG Go to step 2
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
2 INSPECT MULTIPLEX COMMUNCATION SYSTEM (SEE PAGE 05-2040)
NG REPAIR MULTIPLEX COMMUNCATION
SYSTEM
OK

2005 HIGHLANDER (EWD592U)
60
H SYSTEM CIRCUITS
2005 HIGHLANDER
ELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITS
Page
Air Conditioning (Automatic A/C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
298
Air Conditioning (Manual A/C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Audio System (6 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Audio System (8 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Automatic Glare-Resistant EC Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Automatic Light Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Back-Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Cruise Control (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Cruise Control (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Electronically Controlled Transmission and A/T Indicator (2AZ-FE) . . . . . . 110
Electronically Controlled Transmission and A/T Indicator (3MZ-FE) . . . . . . 102
Engine Control (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Engine Control (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Engine Immobilizer System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Front Deicer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Headlight (w/ Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Headlight (w/o Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Mirror Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Multiplex Communication System (BEAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . . 258
Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Navigation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Power Seat (Driver's Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Power Seat (Front Passenger's Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Radiator Fan and Condenser Fan (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Radiator Fan and Condenser Fan (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Rear Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

051ZJ-16
A53766
E7E8E9E6E5
05-32
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
222 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TERMINALS OF ECM
HINT:
Each ECM terminal's standard voltage is shown in the table below.
In the table, first follow the information under ºConditionº. Next look under ºSymbols (Terminal No.)º for the
terminals to be inspected. The standard voltage between the terminals is shown under ºSpecific Conditionº.
Use the illustration above as a reference for the ECM terminals.
Symbols (Terminal No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
BATT (E5-3) - E1 (E9-1)BR - BR
Battery (for measuring
battery voltage and for
ECM memory)
Always9 to 14 V
+BM (E6-6) - E1 (E9-1)W - BRPower source of throttle
motorAlways9 to 14 V
IGSW (E5-9) - E1 (E9-1)P - BRIgnition switchIgnition switch ON9 to 14 V
+B (E5-1) - E1 (E9-1)W- BRPower source of ECMIgnition switch ON9 to 14 V
+B2 (E5-2) - E1 (E9-1)W- BRPower source of ECMIgnition switch ON9 to 14 V
OC1+ (E9-16) - OC1- (E9-15)G-W - G-RCamshaft timing oil con-
trol valve (OCV)Ignition switch ONPulse generation
(see page 05-55)
MREL (E5-8) - E1 (E9-1)B - BREFI relayIgnition switch ON9 to 14 V
VC (E7-18) - E2 (E7-28)Y - BRPower source of sensor
(specific voltage)Ignition switch ON4.5 to 5.5 V
VG (E7-30) - EVG (E7-29)R - L-WMass air flow meterIdling, shift lever position P or N
position, A/C switch OFF0.5 to 3.0 V
THA (E7-20) - E2 (E7-28)L-B - BRIntake air temperature
sensorIdling, intake air temp. 20°C (68°F)0.5 to 3.4 V
THW (E7-19) - E2 (E7-28)G-B - BREngine coolant tempera-
ture sensorIdling, engine coolant temp. 80°C
(176°F)0.2 to 1.0 V
VTA1 (E7-21) - E2 (E7-28)B-W - BRThrottle position sensor
(for engine control)Ignition switch ON, accelerator ped-
al released0.3 to 1.0 V
VTA1 (E7-21) - E2 (E7-28)B-W - BRThrottle position sensor
(for engine control)Ignition switch ON, accelerator ped-
al depressed3.2 to 4.9 V
VTA2 (E7-31) - E2 (E7-28)B-R - BR
Throttle position sensor
(for sensor malfunction
detection)Ignition switch ON, accelerator ped-
al released2.1 to 3.1 V
VTA2 (E7-31) - E2 (E7-28)B-R - BR
Throttle position sensor
(for sensor malfunction
detection)Ignition switch ON, accelerator ped-
al depressed4.5 to 5.5 V
VPA (E5-22) - EPA (E5-28)B - R
Accelerator pedal position
sensor (for engine con-
trol)Ignition switch ON, accelerator ped-
al released0.5 to 1.1 V
VPA (E5-22) - EPA (E5-28)B - R
Accelerator pedal position
sensor (for engine con-
trol)Ignition switch ON, accelerator ped-
al depressed2.6 to 4.5 V
VPA2 (E5-23) - EPA2 (E5-29)W - BR
Accelerator pedal position
sensor (for sensor mal-
function detection)Ignition switch ON, accelerator ped-
al released1.2 to 2.0 V

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-33
223 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)Symbols (Terminal No.)Specified Condition Condition Terminal Description Wiring Color
VPA2 (E5-23) - EPA2 (E5-29)W - BR
Accelerator pedal position
sensor (for sensor mal-
function detection)Ignition switch ON, accelerator ped-
al depressed3.4 to 5.3 V
VCPA (E5-26) - EPA (E5-28)G - R
Power source of acceler-
ator pedal position sensor
(for VPA)
Ignition switch ON4.5 to 5.5 V
VCP2 (E5-27) - EPA2 (E5-29)L - BR
Power source of acceler-
ator pedal position sensor
(for VPA2)
Ignition switch ON4.5 to 5.5 V
HA1A (E8-5) - E04 (E8-7)B-W - W-BA/F sensor heaterIdlingBelow 3.0 V
HA1A (E8-5) - E04 (E8-7)B-W - W-BA/F sensor heaterIgnition switch ON9 to 14 V
A1A+ (E8-23) - E1 (E9-1)BR - BRA/F sensorIgnition switch ON3.0 to 3.6 V
A1A- (E8-31) - E1 (E9-1)Y - BRA/F sensorIgnition switch ON2.7 to 3.3 V
HT1B (E8-21) - E1 (E9-1)R-Y -BRHeated oxygen sensor
heaterIdlingBelow 3.0 V
HT1B (E8-21) - E1 (E9-1)R-Y -BRHeated oxygen sensor
heaterIIgnition switch ON9 to 14 V
OX1B (E8-29) - O1B (E8-2)G - BRHeated oxygen sensorMaintain engine speed at 2,500 rpm
for 2 minutes after warming upPulse generation
#1 (E7-1) - E01 (E7-7)
#2 (E7-2) - E01 (E7-7)L - W-B
Y - W-B
InjectorIIgnition s itch ON9to14V#2 (E7 2) E01 (E7 7)
#3 (E7-3) - E01 (E7-7)
#4 (E7-4) - E01 (E7-7)
Y WB
B - W-B
W - W-BInjectorIIgnition switch ON9 to 14 V
#1 (E7-1) - E01 (E7-7)
#2 (E7-2) - E01 (E7-7)
#3 (E7-3) - E01 (E7-7)
#4 (E7-4) - E01 (E7-7)L - W-B
Y - W-B
B - W-B
W - W-B
InjectorIdlingPulse generation
(see page 05-146)
KNK1 (E8-1) - FKNK1 (E8-28)B - WKnock sensorMaintain engine speed at 4,000 rpm
after warming upPulse generation
(see page 05-161)
G2+ (E9-27) - NE- (E9-24)Y - GCamshaft position sensorIdlingPulse generation
(see page 05-166)
NE+ (E9-25) - NE- (E9-24)R - GCrankshaft position sen-
sorIdlingPulse generation
(see page 05-166)
IGT1 (E7-8) - E1 (E9-1)
IGT2 (E7-9) - E1 (E9-1)
IGT3 (E7-10) - E1 (E9-1)
IGT4 (E7-11) - E1 (E9-1)R-W - BR
P - BR
Y-B - BR
L-Y - BR
Ignition coil with igniter
(ignition signal)IdlingPulse generation
(see page 05-174)
IGF1 (E7-24) - E1 (E9-1)W-R - BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
IIgnition switch ON4.5 to 5.5 V
IGF1 (E7-24) - E1 (E9-1)W-R - BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
IdlingPulse generation
(see page 05-174)
PRG (E7-34) - E1 (E9-1)G - BRPurge valveIgnition switch ON9 to 14 V
VPMP (E7-27) - E1 (E9-1)Y-G - BRVent valve
(Build in pump module)Ignition switch ON9 to 14 V
MPMP (E5-4) - E1 (E9-1)LG - BRVacuum pump
(Build in pump module)Vacuum pump OFF0 to 3 V
MPMP (E5-4) - E1 (E9-1)LG - BRVacuum pump
(Build in pump module)Vacuum pump ON9 to 14 V
PPMP (E5-21) - E2 (E7-28)L - BRPressure sensor
(Build in pump module)Ignition switch ON3 to 3.6 V
SPD (E6-17) - E1 (E9-1)Y - BRSpeed signal from com-
bination meterIgnition switch ON, rotate driving
wheel slowlyPulse generation
(see page 05-216)

05-34
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
224 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)Symbols (Terminal No.)Specified Condition Condition Terminal Description Wiring Color
STA (E7-17) - E1 (E9-1)B - BRStarter signalShift lever position P or N, ignition
switch START9 to 14 V
STP (E6 19) E1 (E9 1)BR BRStop lamp switchBrake pedal is depressed75to14VSTP (E6-19) - E1 (E9-1)BR - BRStop lamp switchBrake pedal is depressed7.5 to 14 V
STP (E6-19) - E1 (E9-1)BR - BRStop lamp switchBrake pedal is releasedBelow 1.5 V
ST1 (E6-12) - E1 (E9-1)V - BRStop lamp switchIgnition switch ON, Brake pedal is
depressedBelow 1.5 V
ST1 (E6-12) - E1 (E9-1)V - BRStop lamp switchIgnition switch ON, Brake pedal is
released7.5 to 14 V
NSW (E7-16) - E1 (E9-1)B-R - BRPNP switchIgnition switch ON, shift position at
P or N0 to 3.0 V
NSW (E7-16) - E1 (E9-1)B-R - BRPNP switchIgnition switch ON, shift position is
not P or N9 to 14 V
M+ (E9-3) - ME01 (E9-4)B - W-BThrottle actuatorIdlingPulse generation
M- (E9-2) - ME01 (E9-4)W - W-BThrottle actuatorIdlingPulse generation
FC (E5-10) - E1 (E9-1)Y - BRFuel pump controlIgnition switch ON9 to 14 V
W (E5-11) - E1 (E9-1)SB - BRMILIgnition switch ONBelow 3.0 V
W (E5-11) - E1 (E9-1)SB - BRMILIdling9 to 14 V
ELS2 (E5-12) - E1 (E9-1)G - BRElectric loadPower outlet OFF0 to 1.5 V
ELS2 (E5-12) - E1 (E9-1)G - BRElectric loadPower outlet ON7.5 to 14 V
TC (E5-20) - E1 (E9-1)O - BRTerminal TC of DLC3Ignition switch ON9 to 14 V
SIL (E5-18) - E1 (E9-1)R - BRTerminal SIL of DLC3During charge of gearsPulse generation
TACH (E5-5) - E1 (E9-1)B - BREngine speedIdlingPulse generation
PSW (E9-10) - E1 (E9-1)R-L - BRPS oil pressure switchIgnition switch ON9 to 14 V

05CD1-12
F45080
S27
05-784
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
974 Author
: Date
:
TERMINALS OF ECU
SKID CONTROL ECU
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
BM (S27-2) - GND (Y1-1)W-L - W-BMotor relay test inputIG switch ON, pump motor running10 to 14 V
FR+ (S27-3) - FR- (S27-17)R-Y - LGFront RH wheel speed
signal inputIG switch ON, slowly turn right front
wheelAC generation
FSW+ (S27-7) - GND1
(S27-32)G-W - W-BFSW switch inputIG switch ON, brake pedal released2 to 4 V
FL+ (S27-18) - FL- (S27-4)O - PFront LH wheel speed
signal inputIG switch ON, slowly turn left front
wheelAC generation
RR+ (S27-5) - RR- (S27-19)Y - BRRear RH wheel speed
signal inputIG switch ON, slowly turn right rear
wheelAC generation
RL+ (S27-20) - RL- (S27-6)Y-G - GRear LH wheel speed sig-
nal inputIG switch ON, slowly turn left rear
wheelAC generation
TRC+ (S27-8) - TRC-
(S27-22)G-B - Y-BECM communication out-
putIG switch ONPulse generation
ENG+ (S27-9) - ENG-
(S27-23)W-L - W-GECM communication inputIG switch ONPulse generation
NEO (S27-10) - GND1
(S27-32)V - W-BEngine rpm signal inputEngine idlingPulse generation
CANH (S27-11) - CANL
(S27-25)B - WCAN communication lineIG switch OFF54 to 67 W
D/G (S27-13) - GND1
(S27-32)GR-B - W-BDiagnosis tester commu-
nication lineIG switch ON10 to 14 V
SP1 (S27-12) - GND1
(S27-32)BR-R - W-BSpeed signal outputVehicle drives at about
20 km/h (12 mph)Pulse generation
MRF (S27-14) - R+ (S27-45)G-R - B-OFail safe motor relay out-
putIG switch ON10 to 14 V
MR (S27-15) - R+ (S27-45)LG - B-OMotor relay outputIG switch ON, pump motor running10 to 14 V
+BS (S27-31) - GND1
(S27-32)B - W-BSolenoid relay power sup-
plyAlways10 to 14 V
TS (S27-24) - GND1 (S27-32)P-B - W-BSensor check inputIG switch ON10 to 14 V
STP (S27-27) - GND1GY WBSt li ht it h i t
Stop light switch ON (Brake pedal
pushed)8 to 14 VSTP (S27 27) GND1
(S27-32)G-Y - W-BStop light switch inputStop light switch OFF (Brake pedal
released)Below 1.5 V