TOYOTA HIGHLANDER 2001 Service Repair Manual

G28385
(+) (-) Shift Solenoid Valve DSL:
05-948- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1138 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT SHIFT SOLENOID VALVE(DSL)
(a) Remove the shift solenoid valve DSL.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 C (68 F)
Solenoid Connector (DSL) - Solenoid
Body (DSL)11 to 13 W
(c) Connect positive (+) lead to the terminal of solenoid con-
nector, negative (-) lead to the solenoid body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(DSL)
OK
5 CHECK TRANSMISSION WIRE (SEE PAGE 01-36)
OK:
The connectors and pins are securely installed.
There is no open or short on the wire harness.
NG REPAIR OR REPLACE TRANSMISSION WIRE
(SEE PAGE 40-34)
OK
6 INSPECT TRANSMISSION VALVE BODY ASSY(See chapter 2 in the problem
symptoms table)
(SEE PAGE 05-904)
OK:
There are no foreign objects on each valve and they operate smoothly.
NG REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY (SEE PAGE 40-40)
OK
7 INSPECT TORQUE CONVERTER CLUTCH ASSY (SEE PAGE 40-29)
OK:
The torque converter clutch operates normally.
NG REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY (SEE PAGE 40-12)

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

- DIAGNOSTICSNAVIGATION SYSTEM
05-1779
1969 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Navigation function
SymptomVerificationSee page
Map disc cannot be inserted.
1. ºMAP DISC CANNOT BE INSERTEDº
2. Power source circuit (navigation ECU)
3. Replace navigation ECU05-1812
05-1830
67-9
Vehicle position mark deviates greatly.
1. ºVEHICLE POSITION MARK DEVIATES GREATLYº
2. Replace GPS antenna assy
3. Replace navigation ECU05-1813
67-19
67-9
Cursor or map rotates when vehicle is stopped.
1. ºCURSOR OR MAP ROTATES WHEN VEHICLE IS
STOPPEDº
2. Replace navigation ECU05-1815
67-9
Vehicle position mark is not updated.
1. ºVEHICLE POSITION MARK IS NOT UPDATEDº
2. Replace map disc
3. Replace navigation ECU05-1816
-
67-9
Current position display does not appear.
1. ºCURRENT POSITION DISPLAY DOES NOT AP-
PEARº
2. Replace map disc
3. Replace navigation ECU05-1817
-
67-9
GPS mark is not displayed.
1. ºGPS MARK IS NOT DISPLAYEDº
2. Replace GPS antenna assy
3. Replace navigation ECU05-1818
67-19
67-9
Voice guidance does not function.1. ºVOICE GUIDANCE DOES NOT FUNCTIONº
2. Speaker circuit (navigation voice)05-1820
05-1849
Map display is incomplete.
1. ºMAP DISPLAY INCOMPLETEº
2. Replace map disc
3. Replace navigation ECU05-1823
-
67-9
Route cannot be calculated.
1. ºROUTE CANNOT BE CALCULATEDº
2. Replace map disc
3. Replace navigation ECU05-1824
-
67-9

I30203
Radio Receiver Assy
BatteryR3ACC+B R34
BU+B
3
R3GND 7 IL1
IK320
2 4
2C 1
2I
V13
3A9
3I
AM1ACC3L
W
ALT
B
BR
IB 2
1C
1C63
1K
1
1A RAD No. 2
AM1
FL MAINGR
W
W1 2D.C.C
RAD No.1
I15
Ignition SW
F7 Fusible Link
BlockL-Y
LGL-B Standard type:
3
22
1 Engine Room J/B
Center J/B
Instrument Panel J/B 05-1634
- DIAGNOSTICSAUDIO SYSTEM
1824 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY)
CIRCUIT DESCRIPTION
This circuit provides the power to the radio receiver assy.
WIRING DIAGRAM
05IRJ-01

I39184
JBL type:
Radio Receiver Assy Center J/B
Engine Room J/B
Instrument Panel J/BI15
Ignition SW
F7
Fusible Link BlockACC
B
GND
Battery FL MAINAM1 RAD No.2
ALT RAD No.1D.C.CL-BGR
L-B LG L-YV
W
BR L
W
B
WR4
R41 11
3K 103I9
3C4 3A 13
IL12
IK320
2C4
2I1
R420
3
ACC AM12
1C6 1C2
1A1 1K3
12
1 23
IB
- DIAGNOSTICSAUDIO SYSTEM
05-1635
1825 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)

I39174
GND ACC+B
BU+B
R3
05-1636
- DIAGNOSTICSAUDIO SYSTEM
1826 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK TYPE
HINT:
If the radio receiver assy is JBL type, ºJBLº is indicated on its surface.
(a) Choose type to be inspected.
TypeGo to step
Standard typeA
JBL typeB
B Go to step 3
A
2 INSPECT RADIO RECEIVER ASSY(BU+B, ACC+B, GND)
(a) Disconnect the connectors from the radio receiver assy.
(b) Measure the resistance according to the value in the table
below.
Standard:
Tester connectionConditionSpecified condition
GND - Body groundAlwaysBelow 1 W
(c) Measure the voltage according to the values in the table
below.
Standard:
Tester connectionConditionSpecified condition
BU+B - GNDAlways10 to 14 V
ACC+B - GNDIgnition SW ACC10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)

I39175
GNDACC B
R4
- DIAGNOSTICSAUDIO SYSTEM
05-1637
1827 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT RADIO RECEIVER ASSY(B, ACC, GND)
(a) Disconnect the connectors from the radio receiver assy.
(b) Measure the resistance according to the value in the table
below.
Standard:
Tester connectionConditionSpecified condition
GND - Body groundAlwaysBelow 1 W
(c) Measure the voltage according to the values in the table
below.
Standard:
Tester connectionConditionSpecified condition
B - GNDAlways10 to 14 V
ACC - GNDIgnition SW ACC10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)

- DIAGNOSTICSAUDIO SYSTEM
05-1675
1865 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
RADIO BROADCAST CANNOT BE RECEIVED(BAD RECEPTION)
INSPECTION PROCEDURE
1 CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY
(a) Check if the radio auto-search functions properly.
(1) Perform the auto-search of the radio and check that it functions normally.
OK: The radio auto-search functions properly.
OK REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
NG
2 CHECK OPTIONAL COMPONENT
(a) Check optional component (sun shade film, telephone antenna etc.).
(1) Check whether or not any optional component such as the sun shade film and the telephone
antenna is installed.
OK: Optional component is installed.
OK EFFECT FROM OPTIONAL COMPONENT
NG
05IRT-01

E50367
05-1676
- DIAGNOSTICSAUDIO SYSTEM
1866 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT RADIO RECEIVER ASSY(ANTENNA)
(a) Preparation for Check
(1) Remove the antenna plug of the radio receiver as-
sembly.
(b) Noise Check
(1) With the radio receiver assy connector connected,
turn the ignition switch to the ACC position.
(2) Turn on the radio and choose the AM mode.
(3) Place a flat-head screwdriver or a piece of metal
such as thin wire on an antenna jack of the radio re-
ceiver assy and check that the noise is heard from
the speaker.
OK: Noise occurs.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
4 CHECK ANTENNA TYPE
(a) Choose type to be inspected.
TypeGo to step
Glass printed type antennaA
Fender type antennaB
B Go to step 7
A

BE4029
Tester Probe
Antenna WireTin Foil
E32576
- DIAGNOSTICSAUDIO SYSTEM
05-1677
1867 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK ANTENNA ASSY
(a) Check for continuity of the antenna.
HINT:
Inspect the continuity, at the center of each antenna wire, as
shown in the illustration.
NOTICE:
When cleaning the glass, use a soft dry cloth, and wipe the
glass in the direction of the wire. Take care not to damage
the wires. Do not use detergents or glass cleaners with
abrasive ingredients. When measuring voltage, wind a
piece of tin foil around the top of the negative probe and
press the foil against the wire with your finger, as shown in
the illustration.
OK: There is continuity in the antenna.
NG REPAIR ANTENNA ASSY (SEE PAGE 67-33)
OK
6 REPLACE AMPLIFIER ANTENNA ASSY (SEE PAGE 67-15 OR 67-16)
(a) Replace the amplifier antenna assy and check if it operates normally.
OK: The amplifier antenna assy operates normally.
OK NORMAL OPERATION
NG
REPLACE RADIO RECEIVER ASSY (SEE PAGE 67-6)
7 CHECK ANTENNA ASSY
(a) Check that the antenna is securely installed.
OK: The antenna is installed properly.
OK Go to step 6
NG
INSTALL THE ANTENNA ASSY PROPERLY