engine TOYOTA HIGHLANDER 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 800 of 2572
F46314
Skid Control ECU
with Actuator
S2710
E517
NEO NEO ECM
IC43
BV 05-818
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1008 Author: Date:
DTC C1224/44 NE SIGNAL CIRCUIT
CIRCUIT DESCRIPTION
The skid control ECU receives engine revolution speed signals (NE signals) from the ECM.
DTC No.DTC Detecting ConditionTrouble Area
C1224/44
When any of the following (1 to 2) is detected:
(1) Any of the following conditions continues for at least 10
seconds.
Data can be received properly from ECM at a speed of
more than 19 mph (30 km/h).
Open or short in engine rpm signal circuit.
(2) Any of the following conditions continues for at least
0.24 seconds.
TRAC is in operation.
Open or short in engine rpm signal circuit.
NEO circuit
ECM
Skid control ECU
WIRING DIAGRAM
05CD9-17
Page 802 of 2572
G26185
ECM
NEOE5
A20293
4.5 to 14 V
Below 1 V20 V/DIV, 1 ms/DIV Pulse
Generation
05-820
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1010 Author: Date:
2 INSPECT ECM TERMINAL VOLTAGE(NEO TERMINAL)
(a) Reconnect the ECM connector and the skid control ECU
connector.
(b) Check the signal waveform between terminal NEO
(E5-17) of the ECM and body ground for the engine
conditions below.
OK:
Tester ConnectionEngine ConditionSpecified condition
E5-17 (NEO) - Body
groundOFF (Ignition switch ON)4.5 to 14 V or below 1 V
E5-17 (NEO) - Body
groundON (Idling)Pulse generation
(4.5 to 14 V e below 1 V)
NG REPLACE ECM
OK
3 CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
NG CONNECT CONNECTOR TO ECU
OK
4 RECONFIRM DTC
(a) Clear the DTCs (see page 05-765).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded?
NO PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-786)
YES
REPLACE ABS & TRACTION ACTUATOR ASSY(SEE PAGE 32-37)
Page 804 of 2572
F46318
S14
Steering SensorSkid Control ECU
with Actuator
Passenger Side J/B
Instrument Panel J/B
Passenger Side J/B
Instrument Panel J/B
Engine Room J/B I15
Ignition SW
F7 FL Block
FL
MAIN
BatteryJ17
J/C
AM1IG1ECU-IG
ALT
D.C.C ECU-B
IC AM1IC4 S27
IC4
IC3S27
1A 1C 1D 1G
2A 2I4C
4J4N
4L
4C
1C1D J16
J/C
1 2
3
45
67 8 9
1011 19 2125
1012 13
31
910
11
710
1
4 1 24
12
3B L W
YW W
E PP
E
LY
G
W
B
W W
W-L W-B W-B
W-B
BR CANL
ESS
IG1 CANH
BATCANL
CANH
1 2 05-822
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1012 Author: Date:
WIRING DIAGRAM
Page 805 of 2572
G26292
IG1
ESSBAT
(+) (-)(+)
(-)
S14
Steering Angle Sensor
(harness side connector)
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-823
1013 Author: Date:
INSPECTION PROCEDURE
HINT:
When U0121/94, U0123/62, U0124/95 or U0126/63 are output together with C1231/31, inspect and
repair the trouble areas indicated by U0121/94, U0123/62, U0124/95 or U0126/63 first.
When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering angle sensor may
be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw
rate sensor are output together with other DTCs for the steering angle sensor, inspect and repair the
speed sensor and yaw rate sensor first, and then inspect and repair the steering angle sensor.
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 READ VALUE OF HAND-HELD TESTER(STEERING ANGLE 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 the steering angle value of the steering angle sensor indicated on the hand-held tester,
changes when the steering wheel is turned.
ItemMeasurement Item /
Range (Display)Normal Condition
STEERING ANGSteering sensor/
Min.: -1152 deg, Max.: 1150.875 degMin.: -128 deg/s
Max.: 128 deg/s
OK:
Steering angle value should change.
OK REPLACE ABS & TRACTION ACTUATOR ASSY
(SEE PAGE 32-37)
NG
2 CHECK TERMINAL VOLTAGE(STEERING ANGLE SENSOR CONNECTOR)
(a) Remove the steering wheel and the column lower cover.
(b) Disconnect the steering angle sensor connector S14.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
S14-1 (IG1) - S14-2 (ESS)10 to 14 V
S14-3 (BAT) - S14-2 (ESS)10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE STEERING ANGLE SENSOR
Page 811 of 2572
G24767
GND1IG1
Skid Control ECU
(harness side connector)
S27
G24767
GND1
Skid Control ECU
(harness side connector)
S27
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-829
1019 Author: Date:
3 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 S27.
(b) Turn the ignition switch to the 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)10 to 14 V
NG Go to step 4
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
4 INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a) Disconnect the skid control ECU connector S27.
(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 (GND TERMINAL - BODY
GROUND)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR (IG1 TERMINAL - BATTERY)
Page 812 of 2572
05-830
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1020 Author: Date:
DTC C1246/46 MALFUNCTION IN MASTER CYLINDER
PRESSURE SENSOR
CIRCUIT DESCRIPTION
Master cylinder pressure sensor is connected to the skid control ECU in the actuator.
DTC No.DTC Detecting ConditionTrouble Area
C1246/46
When any of the following (1 to 5) is detected:
(1) All the following conditions continues for at least 30 se-
conds.
Vehicle speed is more than 4 mph (7 km/h).
PMC terminal voltage does not change by more than
0.005 V once it exceeds 0.86 V.
(2) PMC terminal receives interference at least 7 times
within 5 sec.
(3) All the following conditions continues for at least 1.2
seconds.
Stop switch is OFF.
PMC terminal voltage is more than 0.86 V or less than 0.3
V.
(4) All the following conditions continues for at least 1.2
seconds.
IG1 terminal voltage is between 9.5 and 17.2 V.
VCM terminal voltage is not within 4.4 and 5.6 V.
(5) All the following conditions continues for at least 1.2
seconds.
VCM terminal voltage is between 4.4 and 5.6 V.
PMC terminal voltage is not within 0.14 and 4.85 V.
Master cylinder pressure sensor
Master cylinder pressure sensor circuit
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 READ VALUE OF HAND-HELD TESTER(MASTER CYLINDER PRESSURE
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.
ItemMeasurement Item /
Range (Display)Normal Condition
MAS CYL PRS 1Master cylinder pressure sensor 1
reading / min.: 0 V, max.: 5 VWhen brake pedal is released : 0.3 to
0.9 V
(d) Check that the brake fluid pressure value of the master cylinder pressure sensor indicated on the
hand-held tester, changes when the brake pedal is depressed.
Standard:
Brake fluid pressure value should change.
NG Go to step 2
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
05H3Q-02
Page 818 of 2572
G24767GND2
Skid Control ECU
(harness side connector)
S27
05-836
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1026 Author: Date:
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not
using the hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(ABS MOTOR RELAY
OPERATION)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the ACTIVE TEST mode on the hand-held tester.
(d) Check the operation sound of the ABS motor individually when operating it with the hand-held tester.
ItemVehicle Condition / Test DetailsVehicle Condition / Test Details
ABS MOT RELAYABS motor relay / ON or OFFON: Motor relay ON
OK:
The operation sound of the ABS motor should be heard.
NG Go to step 2
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
2 INSPECT HARNESS AND CONNECTOR(GND2 OF SKID CONTROL ECU AND
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
S27-1 (GND2) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
Page 819 of 2572
F46316
Passenger Side J/BB13
Brake Pedal Load
Sensing SWSkid Control ECU
with Actuator
FSW+ IC4 S27
IC4J
4N W-B W-BG-W
P 1
26 7
17
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-837
1027 Author: Date:
DTC C1267/67 Brake Pedal Load Sensing Switch
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1267/67
Open or short circuit in brake pedal load sensing switch
continues for 0.3 secs. or more.
Immediately after IG1 is turned to the ON position, the
condition that brake pedal load sensing switch is ON and
stop lamp switch is off continues for 10 secs. or more.
While vehicle speed changes from 0 mph (0 km/h0 mph)
to 19 mph (30 km/h19 mph), the condition that the brake
pedal load sensing switch is on repeatedly occurs 5 times.
Brake pedal load sensing switch
Brake pedal load sensing switch circuit
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF 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 value of the brake pedal load sensing switch displayed on the hand-held tester when de-
pressing and releasing the brake pedal.
ItemVehicle Condition / Test DetailsDiagnostic Note
BRAKE WRN LIGHTBrake load sensing switch / ON or OFF
ON : Depressed brake
pedal
OFF : Released brake
pedal
OK:
ConditionDisplay
Depress the brake pedalON
Release the brake pedalOFF
OK Go to step 4
NG
05H3S-03
Page 837 of 2572
A87796
IAC
Valve
No. 2Valve closed (VSV: ON)
Throttle Valve30°
4,000 rpm
Engine Speed
Throttle Valve
Opening Angle
05-660
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
850 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
ACIS CONTROL CIRCUIT
CIRCUIT DESCRIPTION
The ECM opens and closes the Intake Air Control (IAC) valve No. 2 in response to engine speed (RPM/NE).
This system improves intake manifold tuning for better efficiency at low and high engine rpm. When the en-
gine speed is 4,000 rpm or less and the throttle valve opening angle is 30 or more, the ECM turns the VSV
ON to operate the IAC valve.
HINT:
ACIS stands for ºAcoustic Control Induction Systemº.
05EY4-05
Page 838 of 2572
A88701
EH FL
MainEFI NO. 2
2IK313 2D
5
3
5P-L
BatteryEFI RelayEngine Room R/B No. 2
WEngine Room J/B
1ECM
MREL
E58
E7E1 1 B
BR
A
AJ7
J/C
BR
EDACIS
E7 15
R-Y V2
VSV for IAC
Valve No. 2
12 B-R B-W1
EB1 2 2
2 1
Y
3
14EFI NO. 1
2I 2F2B
W 3
1F7
FL Block
Assy
A
J2
J/C W-B
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-661
851 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM