2001 TOYOTA HIGHLANDER parking brake

E74263
Multiplex Network Body ECU
Connector Front View:
B12
B12-14
- DIAGNOSTICSLIGHTING SYSTEM
05-1599
1789 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(PARKING BRAKE SWITCH CIRCUIT)
(a) Disconnect the B12 connector from the multiplex network body ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
B12-14 - Body groundShaft of parking brake switch is pressed10 kW or higher
B12-14 - Body groundShaft of parking brake switch is not pressedBelow 1 W
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1538)

E71372
ON
OFF
05-1600
- DIAGNOSTICSLIGHTING SYSTEM
1790 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT PARKING BRAKE SWITCH ASSY
(a) Remove the parking brake switch.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
1 - Switch bodyOFF
(When shaft is pressed)10 kW or higher
1 - Switch body
ON
(When shaft is not
pressed)
Below 1 W
NG REPLACE PARKING BRAKE SWITCH ASSY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (PARKING BRAKE SWITCH CIRCUIT)

I38590
*1
*2
*3
*4
*5*6
I38591
- DIAGNOSTICSNAVIGATION SYSTEM
05-1771
1961 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(e) LAN Monitor (Individual) Screen
Screen Description
DisplayContents
Device name/*1Target device
Segment/*2Target logical address
DTC/*3DTC (Diagnostic Trouble Code)
Sub-Code (device address)/*4Physical address stored with DTC. (If there is no address, nothing is displayed.)
Connection check No./*5Connection check number stored with DTC.
DTC occurrence/*6Number of times the same DTC has been recorded.
2. DISPLAY CHECK
(a) Vehicle Signal Check Mode Screen
Screen Description
NameContents
BatteryBattery voltage is displayed.
PKBParking brake ON/OFF state is displayed.
REVReverse signal ON/OFF state is displayed.
IGIG switch ON/OFF state is displayed.
ADIM/TCANBrightness state DIM (with)/ BRIGHT (without) is displayed.
SPEEDThe vehicle speed, displayed in km/h.
TAILTAIL signal (Head lamp dimmer switch) ON/OFF state is displayed.
HINT:

Only items sending a vehicle signal will be displayed.

This screen is updated once per second when input signals to the vehicle are changed.

05F2X-05
C81121D25472
SST
SST
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-891
1081 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
HYDRAULIC TEST
1. PERFORM HYDRAULIC TEST
(a) Measure the line pressure.
NOTICE:

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

The line pressure test should always be carried out in pairs. One technician should observe
the conditions of wheels or wheel stopper outside the vehicle while the other is doing the test.

Be careful to prevent SST's hose from interfering with the exhaust pipe.
(1) Warm up the ATF.
(2) Remove the test plug on the front side of the trans-
axle case and connect SST.
SST 09992-00095 (09992- 00231, 09992-00271)
(3) Fully apply the parking brake and chock the 4
wheels.
(4) Connect an OBD II scan tool or hand-held tester to
the DLC3.
(5) Start the engine and check idling speed.
(6) Keep your left foot pressing firmly on the brake ped-
al and shift into D position.
(7) Measure the line pressure when the engine is idling.
(8) Depress the accelerator pedal all the way down.
Quickly read the highest line pressure when engine
speed reaches stall speed.
(9) In the same way, do the test in R position.
Specified line pressure:
ConditionD position kPa (kgf / cm2, psi)R position kPa (kgf / cm2, psi)
Idling372 to 412 kPa
(3.8 to 4.2 kgf/cm2, 54 to 60 psi)
672 to 742 kPa
(6.9 to 7.6 kgf/cm2, 97 to 108 psi)
Stall test931 to 1,031 kPa
(9.5 to 10.5 kgf/cm2, 135 to 150 psi)
1,768 to 1,968 kPa
(18.0 to 20.0 kgf/cm2, 256 to 285 psi)
Evaluation:
ProblemPossible cause
If the measured values at all positions are higher
Line pressure control solenoid (SLT) defective

Regulator valve detective
If the measured values at all positions are lower

Line pressure control solenoid (SLT) defective

Regulator valve detective

Oil pump defective

U/D (Underdrive) direct clutch defective
If pressure is low in the D position only
D position circuit fluid leak

Forward clutch defective
If pressure is low in the R position only

R position circuit fluid leak

Direct clutch defective

1st and reverse brake defective

05F2W-05
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-889
1079 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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

05-890- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1080 Author
: Date
:
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

05IS9-02
05-1778
- DIAGNOSTICSNAVIGATION SYSTEM
1968 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
PROBLEM SYMPTOMS TABLE
HINT:

Before performing verification listed in the table below, check the fuse and relay.

Methods used to verify the cause of the problem are listed in order of probability in the verification col-
umn.

If there are two or more parts to be replaced in the verification column, check the symptom after replac-
ing each part. If the symptom still occurs, replace the following part in the colummn.
Display function
SymptomVerificationSee page
Black screen (No image appears on navigation/audio screen).
1. ºBLACK SCREEN (NO IMAGE APPEARS ON NAV-
IGATION AND AUDIO SCREEN)º
2. Power source circuit (multi-display)
3. Replace multi-display05-1805
05-1828
67-8
Illumination for panel switch does not come on with TAIL switch
on.
1. ºILLUMINATION FOR PANEL SWITCH DOES NOT
COME ON WITH TAIL SWITCH ONº
2. Dimmer signal circuit
3. Replace multi-display05-1806
05-1854
67-8
Display does not dim (Night Screen) with TAIL switch on.
1. ºDISPLAY DOES NOT DIM (NIGHT SCREEN) WITH
TAIL SWITCH ONº
2. Replace multi-display
3. Replace gateway ECU
4. Replace combination meter assy05-1807
67-8
67-21
71-18
Power does not turn off (The screen remains on).1. Power source circuit (multi-display)
2. Replace multi-display05-1828
67-8
Panel switch does not function.
1. ºPANEL SWITCH DOES NOT FUNCTIONº
2. Power source circuit (multi-display)
3. Replace multi-display05-1808
05-1828
67-8
Touch panel switch does not function.
1. ºTOUCH PANEL SWITCH DOES NOT FUNCTIONº
2. Power source circuit (multi-display)
3. Replace multi-display05-1809
05-1828
67-8
Screen is distorted.
1. Display signal circuit (navigation ECU - multi-display)
2. Replace navigation ECU
3. Replace multi-display05-1852
67-9
67-8
Screen flicker or color distortion.
1. ºSCREEN FLICKER OR COLOR DISTORTIONº
2. Display signal circuit (navigation ECU - multi-display)
3. Replace navigation ECU
4. Replace multi-display05-1810
05-1852
67-9
67-8
Switches can be operated while vehicle is running1. Speed signal circuit (multi-display - combination meter
assy)05-1841
DVD image cannot be displayed on front screen. (Parking brake
is on.) *11. Parking brake switch circuit05-1846
*1: w/ Rear Seat Entertainment System

05-888- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1078 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) 2 position test:
Shift into the 2 position and fully depress the accelerator pedal and check the following points.
(1) Check up-shift operation.
Check that the 1 " 2 up-shift takes place and that the shift point conforms to the automatic shift
schedule (see page 03-51).
HINT:
There is no 3rd up-shift and lock-up in the 2 position.
(2) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine
braking effect.
(3) Check for abnormal noise during acceleration and deceleration, and for shock at up-shift and
down-shift.
(c) L position test:
Shift into the L position and fully depress the accelerator pedal and check the following points.
(1) Check no up-shift.
While running in the L position, check that there is no up-shift to 2nd gear.
HINT:
There is no lock-up in the L position.
(2) Check engine braking.
While running in the L position, release the accelerator pedal and check the engine braking ef-
fect.
(3) Check for abnormal noise during acceleration and deceleration.
(d) R position test:
Shift into the R position, lightly depress the accelerator pedal, and check that the vehicle moves back-
ward without any abnormal noise or vibration.
CAUTION:
Before conducting this test ensure that the test area is free from people and obstruction.
(e) P position test:
Stop the vehicle on the grade (more than 5°) and after shifting into the P position, release the parking
brake. Then, check that the parking lock pawl holds the vehicle in place.