ABS TOYOTA HIGHLANDER 2001 Service Owner's Manual

2005 HIGHLANDER (EWD592U)
185
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A438 (3MZ-FE)C12B42J1944A440 (2AZ-FE)D342P343
A538 (3MZ-FE)E542P2243A540 (2AZ-FE)F738 (3MZ-FE)S1443
A2444F740 (2AZ-FE)S1543
A2544J439 (3MZ-FE)S2739 (3MZ-FE)
B438 (3MZ-FE)J441 (2AZ-FE)S2741 (2AZ-FE)B440 (2AZ-FE)J643T643
B1342J1643V843
C11A42J1743Y145
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
523ABS R/B (Engine Compartment Rear Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D
1E29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1G
()
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3A
3B
3C30
3DInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)3FInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3G
3J31
3K
4A
4C
4D33
4E
4HCowl Wire and Passenger Side J/B (Right Side of Grove Box)4ICowl Wire and Passenger Side J/B (Right Side of Grove Box)
4J
4L32
4M
4N

2005 HIGHLANDER (EWD592U)
285
IF2 10
IC3 8
EA A1
2
BR P Y- B W- B Y- B
Engine Control Module
Skid Control ECU
with Actuator
L
V
B
W
P
BR
Combination SW
J 3
W 1
IC3 7
IF3 7 15A
H- LP
RH LWR
2
R- Y B G
2 1
IF3 15
IC4 1
EB A
R R- B W- B R- B
J 4
B 4
B
Washer Level
Malfunction
Indicator Lamp
Brake
ABS
VSC
Beam
Turn LH
Turn RH
19 AA 15 A 14 B 16
7 A 17 11 B B 10 B 4 B 12
L
GRTurn Signal Flasher SlipDriver' s
Seat Belt
TRAC OFFAirbag
A/T
OI L TEMP
MAINT REQD
Tire Air
Pressure(
2WD) (
2WD)
13 A 10A
IGN
1G 6
4M 4
4E 1
W
SB P
J 6
E E
IL1 9 P
P
(
USA) (
USA)
* 1 : 3MZ- FEFr om Power Source System (
See Page 62)
Brake Warning SW
Junction
ConnectorJunction
Connector
Junction
Connector Washer Level
Sensor
Combination Meter C11(
A)
, C12(
B)
2 1

'05 HIGHLANDER_U (L/O 0409)
384
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
If either of the above parts are extremely
dirty or you are not sure of their condi-
tion, take your vehicle to a Toyota dealer.
CAUTION
To prevent burning yourself, be care-
ful not to touch the radiator or con-
denser when the engine is hot.
NOTICE
To prevent damage to the radiator
and condenser, do not perform the
work by yourself.
To check the fluid level, simply look at
the see- through reservoir. The level
should be between the MAXº and
MINº lines on the reservoir.
It is normal for the brake fluid level to go
down slightly as the brake pads wear. So
be sure to keep the reservoir filled.
If the reservoir needs frequent refilling, it
may indicate a serious mechanical prob-
lem.
If the level is low, add SAE J1703 or
FMVSS No.116 DOT 3 brake fluid to the
brake reservoir.Remove and replace the reservoir cap by
hand. Fill the brake fluid to the dotted
line. This brings the fluid to the correct
level when you put the cap back on.
Use only newly opened brake fluid. Once
opened, brake fluid absorbs moisture from
the air, and excess moisture can cause a
dangerous loss of braking.
CAUTION
Take care when filling the reservoir
because brake fluid can harm your
hands or eyes. If fluid gets on your
hands or in your eyes, flush the af-
fected area with clean water immedi-
ately. If you still feel uncomfortable
with your hands or eyes, go to the
doctor.
NOTICE
If you spill some of the fluid, be sure
to wipe it off to prevent it from dam-
aging the parts or paintwork.
Checking the radiator and
condenserChecking brake fluid

*The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being
abbreviations.
2005 HIGHLANDER (EWD592U)
17
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
2WD = Two Wheel Drive Vehicles
A/C = Air Conditioning
A/T = Automatic Transaxle
ABS = Anti-Lock Brake System
ACIS = Acoustic Control Induction System
ACM = Active Control Engine Mount
BEAN = Body Electronics Area Network
CAN = Controller Area Network
EC = Electrochromic
ECU = Electronic Control Unit
ESA = Electronic Spark Advance
EVAP = Evaporative Emission
IC = Integrated Circuit
J/B = Junction Block
LH = Left-Hand
O/D = Overdrive
R/B = Relay Block
RH = Right-Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
TRAC = Traction Control
VSC = Vehicle Stability Control
VSV = Vacuum Switching Valve
VVT = Variable Valve Timing
w/ = With
w/o = Without

F46304
Combination Meter
Passenger Side J/BABS C11
Instrument Panel J/BSkid Control ECU with Actuator
I15
Ignition SW
F7
FL BlockC11 IF2
IL1 IC4 S27
S27 S27 4E
4H 4JJ6
J/C
IC4
IC1 1A
1C 1D
1G
1C 1C ECU-IG
IGN
AM1IG1 4M
IG2AM1
AM2WA
IG1
GND1
EA EB ALT
AM2
J4
J/C FL MAIN
Battery1
24 6
7 9
10 13
1729
4
446
4
62
10
32 12
12
1 E P W SB R-L
P
ESB
GRB-R
G
GR
W
Y
L-Y WB
W-B Y
W
AW-B 167 10
1
6 05-840
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
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: Date
:
ABS WARNING LIGHT CIRCUIT (REMAINS ON)
CIRCUIT DESCRIPTION
During DTC read by SST (CHECK WIRE), if the ABS warning light remains on, troubleshoot by following
this inspection flow.
WIRING DIAGRAM
05CDG-1 1

- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-841
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: Date
:
INSPECTION PROCEDURE
1 CHECK DTC
(a) Is DTC output for ABS?
Standard:
DTC is not outputA
DTC is outputB
B REPAIR CIRCUIT INDICATED BY OUTPUT
CODE
A
2 INSPECT CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY
CONNECTED
NG CONNECT CONNECTOR TO ECU
OK
3 INSPECT BATTERY
(a) Check the battery voltage.
Standard:
Tester ConnectionSpecified Condition
Battery terminal
((+) - (-))11 to 14 V
NG INSPECT CHARGING SYSTEM
OK

G24767
GND1IG1
Skid Control ECU
(harness side connector)
S27
05-842
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
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: Date
:
4 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(IG1 TERMINAL)
WHEN USING HAND-HELD TESTER:
(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) Read the voltage condition output from the ECU displayed on the hand-held tester.
ItemMeasurement Item /
Range (Display)Normal Condition
IG VOLTAGEECU power supply voltage /
TOO LOW / NORMALNORMAL: 9.5 V or over
TOO LOW: Below 9.5 V
OK:
ºNormalº is displayed.
WHEN NOT USING HAND-HELD TESTER:
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch ON position.
(c) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
S27-46 (IG1) - S27-32 (GND1)11 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK

F46286
Skid Control ECU Front View
S27WA
Combination Meter
(harness side view)
C11
G24767
Skid Control ECU
(harness side connector)S27
GND1
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-843
1033 Author
: Date
:
5 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - COMBINATION
METER)
(a) Disconnect the skid control ECU connector and combina-
tion meter connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
C11-17 - S27-29 (WA)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-29 (WA) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
6 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - BODY GROUND)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-32 (GND1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

F50610
Skid Control ECU with Actuator Combination Meter
B4
Brake Warning SW
Passenger Side J/B
Instrument Panel J/B
I15
Ignition SW
F7
FL Block Brake
IGN
AM2BRL
PKB
AM2 IG2
FL MAIN
BatteryC11 IF3 IC4 S27
IL1
S27 C12
C12IF3
IC4
4E 4M
1C
1G4J
4MIC4
IC1Passenger Side J/B
P3
Parking
Brake SW J4
J/C
EB1
2
3 46
791011 13
1644
15
1
28 J6
J/C
11
9
16
6
1
10
1 1
1 B
PR V
W YSB
P
EER-B SB
R-W
LG
B
A L-Y GRW W-B
LG-B
05-854
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
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: Date
:
BRAKE WARNING LIGHT CIRCUIT
CIRCUIT DESCRIPTION
The BRAKE warning light comes on when the brake fluid is insufficient, the parking brake is applied or the
EBD is defective.
WIRING DIAGRAM
05F1V-09

G24767
Skid Control ECU
(harness side connector)
S27
BRL
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-855
1045 Author
: Date
:
INSPECTION PROCEDURE
HINT:
When releasing the parking brake, set the chocks to hold the vehicle for safety.
1 CHECK BRAKE FLUID
(a) Release the parking brake pedal.
(b) Check that the brake fluid level is proper.
NG ADD BRAKE FLUID
OK
2 CHECK DTC FOR ABS
(a) Are the DTC recorded? (see page 05-765)
NO Go to step 3
YES
REPAIR CIRCUIT INDICATED BY OUTPUT CODE
3 INSPECT BRAKE WARNING LIGHT
WHEN USING HAND-HELD TESTER:
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the item ºBRAKE WARN LIGHTº in the ACTIVE TEST and operate the BRAKE warning light
on the hand-held tester.
ItemVehicle Condition / Test DetailsDiagnostic Note
BRAKE WRN LIGHTTurns BRAKE warning light ON / OFFObserve combination me-
ter
(d) Check that ºONº and ºOFFº of the BRAKE warning light are indicated on the combination meter when
using the hand-held tester.
OK:
Turn the BRAKE warning light on or off in accordance with the hand-held tester.
WHEN NOT USING HAND-HELD TESTER:
(a) Turn the ignition switch off and disconnect the connector
from the skid control ECU.
(b) Ground terminal BRL of the skid control ECU.
(c) Turn the ignition switch to the ON position.
(d) Check that the brake warning light.
OK:
Turn the light on or off in accordance with the connec-
tion of terminal BRL and body ground.
NG Go to step 4
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)