TOYOTA HIGHLANDER 2001 Service Repair Manual

G31593
Warmed up
sufficiently
Approx.100 km/h
(62 mph)
Vehicle Speed
Approx. 80 km/h
(50 mph)
0
Lock-up ON
Vehicle Speed
Stop
(Idling)
Maintain a constant speed or gradual acceleration (with the throttle open)
for 3 minutes or more.
*1
Normal acceleration
through all the gears from 1st to 4th(O/D)
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-903
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
HINT:
*1: Drive at such a speed in the uppermost gear, to engage lock-up. The vehicle can be driven at a speed
lower than that in the above diagram under the lock-up condition.
NOTICE:
It is necessary to drive the vehicle for approximately 30 minutes to detect DTC P0711 (ATF tempera-
ture sensor malfunction).

05F2W-05
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-889
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MECHANICAL SYSTEM TESTS
1. PERFORM MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object of this test is to check the overall performance of the transaxle and engine by measuring
the stall speeds in the D and R positions.
NOTICE:

Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature 50
to 80°C (122 to 176°F).

Do not continuously run this test for longer than 10 seconds.

To ensure safety, do this test in a wide, clear level area which provides good traction.

The stall test should always be carried out in pairs. One technician should observe the condi-
tions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
(1) Chock the 4 wheels.
(2) Connect an OBD II scan tool or hand-held tester to the DLC3.
(3) Fully apply the parking brake.
(4) Keep your left foot pressed firmly on the brake pedal.
(5) Start the engine.
(6) Shift into the D position. Press all the way down on the accelerator pedal with your right foot.
(7) Quickly read the stall speed at this time.
Stall speed: 2,250
150 rpm
(8) Do the same test in the R position.
Stall speed: 2,250
150 rpm
Evaluation:
ProblemPossible cause
(a) Stall engine speed is low in D and R positions

Engine power output may be insufficient

Stator one-way clutch not operating properly
HINT: If the value is less than the specified value by 600 rpm or
more, the torque converter could be faulty.
(b) Stall engine speed is high in D position

Line pressure is too low

Forward clutch slipping

No. 2 one-way clutch not operating properly

U/D (Underdrive) clutch slipping
(c) Stall engine speed is high in R position

Line pressure is too low

Direct clutch slipping

1st and reverse brake slipping

U/D (Underdrive) clutch slipping
(d) Stall engine speed is high in D and R positions

Line pressure is too low

Improper fluid level

U/D (Underdrive) one-way clutch not operating properly

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TRANSAXLE [ECT] (U241E/U140F)
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Measure the time lag.
(1) When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag
before the shock can be felt. This is used for checking the condition of the direct clutch, forward
clutch, and 1st and reverse brake.
NOTICE:

Perform the test at the normal operating ATF temperature 50 to 80 °C (122 to 176 °F).

Be sure to allow 1 minute interval between tests.

Perform the test three times, and measure the time lags. Calculate the average value of the three
time lags.
(2) Connect an OBD II scan tool or hand-held tester to the DLC3.
(3) Fully apply the parking brake.
(4) Start and warm up the engine and check idle speed.
Idle speed: approx. 700 rpm (In N position and A/C OFF)
(5) Shift the lever from N to D position. Using a stop watch, measure the time from when the lever
is shifted until the shock is felt.
Time lag: N " D less than 1.2 seconds
(6) In the same way, measure the time lag for N " R.
Time lag: N " R less than 1.5 seconds
Evaluation (If N " D or N " R time lag is longer than the specified):
ProblemPossible cause
N " D time lag is longer

Line pressure is too low

Forward clutch worn

U/D (Underdrive) one-way clutch not operating
N " R time lag is longer

Line pressure is too low

Direct clutch worn

1st and reverse brake worn

U/D (Underdrive) one-way clutch not operating properly

I40141
W
4M4
4E1
P
P
P EEC1113
IL19
SB J6
J/C
C111
C112
C1111
3B12
3K2
BR
R
IB Battery FL MAINCenter J/B Instrument Panel J/BEngine Room J/B Instrument Panel J/B
1C6
1A1
12AM1 2I1
4
2A
IC11 D.C.C ECU-B
1
2 WB AM2
ALT10 3W
L-Y F7
FL BlockIC35AM1
AM2 IG1
IG2
W-L BR1C 1C
1K1 117
1K13
1G6
1G10HEATER
IGN
6 42 7
7W
Y
LG G
GR B
I15
Ignition SW Center J/B
3A4
3C7Combination Meter Assy
Passenger Side J/B
- DIAGNOSTICSCOMBINATION METER
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ENTIRE COMBINATION METER DOES NOT OPERATE
WIRING DIAGRAM
05IPX-02

I40698
C11-1
Wire Harness View:
C11-13C11-2C11-1 1
05-1884
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT COMBINATION METER ASSY
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Terminal NoConditionSpecified condition
C11-1 1 - Body groundAlwaysBelow 1 W
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Terminal NoConditionSpecified condition
C11-2 - Body groundAlways10 to 14 V
C11-1 - Body groundIgnition switch ON10 to 14 V
C11-13 - Body groundIgnition switch ON10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE COMBINATION METER ASSY(SEE PAGE 71-18)

I40142
Skid Control ECU
With Actuator
SP1
S2712Combination Meter Assy
BR-R
IC415
BR
C12 18
IF36
GR
- DIAGNOSTICSCOMBINATION METER
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MALFUNCTION IN SPEEDOMETER
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER
(a) Operate the hand-held tester according to the steps on the display and select the ºACTIVE TESTº.
METER:
ItemTest DetailsDiagnostic Note
SPEED METER0 / 40(24) / 80(48) / 120(72) / 160(96) / 200(120)
km/h(mph)-
OK:
Needle indication is normal.
NG REPLACE COMBINATION METER ASSY
(SEE PAGE 71-18)
OK
05IPY-02

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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 READ VALUE OF HAND-HELD TESTER(VEHICLE SPEED SIGNAL)
(a) Operate the hand-held tester according to the steps on the display and select the ºDATA LISTº.
METER:
ItemMeasurement Item/
Range (Display)Normal ConditionDiagnostic Note
SPEED METERVehicle speed / Min.: 1 km/h (1
mph), Max.: 255 km/h (158 mph)Almost same as actual vehicle
speed (When driving)-
OK:
Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.
NG Go to step 3
OK
REPLACE COMBINATION METER ASSY(SEE PAGE 71-18)
3 READ VALUE OF HAND-HELD TESTER(VEHICLE SPEED SIGNAL)
(a) Operate the hand-held tester according to the steps on the display and select the ºDATA LISTº.
ABS:
ItemMeasurement Item/
Range (Display)Normal ConditionDiagnostic Note
(FR/FL/RR/RL) SPDVehicle speed / Min.: 0 km/h (0
mph), Max.: 326 km/h (202 mph)Almost same as actual speed
(When driving)-
OK:
Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.
NG GO TO BRAKE CONTROL SYSTEM
(SEE PAGE 05-761)
OK

I30440
Wire Harness View:
C12-6
A05135
- DIAGNOSTICSCOMBINATION METER
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4 INSPECT COMBINATION METER ASSY
INSPECTION USING OSCILLOSCOPE
(a) Check the input signal waveform.
(1) Remove the combination meter assy.
(2) Connect the oscilloscope to the terminals C12-6
and body ground.
(3) Start the engine.
(4) Check the signal waveform according to the condi-
tion (s) in the table below.
ItemCondition
Tool setting5 V/DIV, 20 ms/DIV
Vehicle conditionDriving at approx. 20 Km/h (12 mph)
OK:
As shown in the illustration
HINT:
As vehicle speed increases, the cycle of the signal waveform
narrows.
NG Go to step 5
OK
REPLACE COMBINATION METER ASSY(SEE PAGE 71-18)

I40607
C12-6
Combination Meter Assy
Wire Harness View: ABS&Traction Actuator Assy (VSC)
Wire Harness View:
S27-12
I40133
S27-12
ABS&Traction Actuator Assy (VSC)
Wire Harness View:
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5 CHECK HARNESS AND CONNECTOR(ABS&TRACTION ACTUATOR ASSY(VSC) -
COMBINATION METER ASSY)(SEE PAGE 01-26)
(a) Disconnect the C12 and S27 connectors.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionConditionSpecified Condition
C12-6 - S27-12AlwaysBelow 1 W
C12-6 - Body groundAlways10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
6 INSPECT COMBINATION METER ASSY
(a) Disconnect the S27 connector.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionConditionSpecified Condition
S27-12 - Body groundIgnition switch ON10 to 14 V
NG REPLACE COMBINATION METER ASSY
(SEE PAGE 71-18)
OK
GO TO BRAKE CONTROL SYSTEM(SEE PAGE 05-761)

I40596
2
3 P
OP
OOO
YV A
DA
D J13
J/C
BH15
BH114
IR211IR29
2
C11 Combination Meter Assy
BR
IB2 3
6
3K3B Center J/B F12
FUEL SENDER
(FUEL PUMP
AND SENDER)
- DIAGNOSTICSCOMBINATION METER
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MALFUNCTION IN FUEL RECEIVER GAUGE
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER
(a) Operate the hand-held tester according to the steps on the display and select the ºACTIVE TESTº.
METER:
ItemTest DetailsDiagnostic Note
FUEL GAUGEOFF, EMPTY, 1/2, FULL-
OK: Needle indication is normal.
NG REPLACE COMBINATION METER ASSY
(SEE PAGE 71-18)
OK
0524B-04