TOYOTA HIGHLANDER 2001 Service Repair Manual

I40203
RMU
R23
Radio Receiver Assy:
I34639RMUT
R29
Multi-display Controller Sub-assy:
I40577RMU
R23Radio Receiver Assy:
- DIAGNOSTICSREAR SEAT ENTERTAINMENT SYSTEM
05-1721
1911 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(RADIO RECEIVER ASSY - MULTI-DISPLA Y
CONTROLLER SUB-ASSY)
(a) Disconnect the connector from the radio receiver assy
and multi-display controller sub-assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified condition
RMU - RMUTAlwaysBelow 1 W
RMU - Body groundAlways10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
2 INSPECT RADIO RECEIVER ASSY
(a) Connect the radio receiver assy connector.
(b) Measure the voltage according to the values in the table
below.
Standard:
Tester connectionConditionSpecified condition
RMU - Body groundAudio system soundingApprox. 3.5 V
RMU - Body groundAudio system changingBelow 1.0 V
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1704)

05MOI-01
05-12
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
202 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REGISTRATION
NOTICE:
The Vehicle Identification Number (VIN) must be input into the replaced ECM.
HINT:
The VIN is a 17-digit alphanumeric vehicle identification number. A hand-held tester is required to register
the VIN.
1. DESCRIPTION
This registration section consists of three parts, Input Instructions, Read VIN and Write VIN.
(a) Input Instructions: Explains the general VIN input instructions using a hand-held tester.
(b) Read VIN: Explains the VIN reading process in a flowchart. This process allows the VIN stored in the
ECM to be read, in order to confirm that the two VINs, provided with the vehicle and stored in the ve-
hicle's ECM, are the same.
(c) Write VIN: Explains the VIN writing process in a flowchart. This process allows the VIN to be input into
the ECM. If the ECM is changed, or the VINs do not match, the VIN can be registered, or overwritten
in the ECM by following this procedure.
2. INPUT INSTRUCTIONS
(a) Hand-held tester
(1) The arrow buttons (UP, DOWN, RIGHT and LEFT) and numerical buttons (0 to 9) are used, in
order to input the VIN.
(b) Cursor Operation
(1) To move the cursor around the tester screen, press the RIGHT and LEFT buttons.
(c) Alphabetical Character Input
(1) Press the UP and DOWN buttons to select the desired alphabetical character.
(2) After selection, the cursor should move.
(d) Numeric Character Input
(1) Press the numerical button corresponding to the number that you want to input.
(2) After input, the cursor should move.
HINT:
Numerical characters can be selected by using the UP and DOWN buttons.
(e) Correction
(1) When correcting the input character(s), put the cursor onto the character using the RIGHT or
LEFT button.
(2) Select or input the correct character using the UP/DOWN buttons, or the numerical buttons.
(f) Finishing Input Operation
(1) Make sure that the input VIN matches the vehicle VIN after input.
(2) Press the ENTER button on the tester.

START
Confirm vehicle VIN
Preparation:
1. Connect hand-held tester to DLC3
2. Turn ignition switch to ON
3. Turn tester ON
Hand-held tester operation:
1. Select DIAGNOSIS
2. Select ENHANCED OBD ll
READ:
Menu Screen:
*********************************
[ VIN ]
*********************************
PRESS [EXIT]
ERROR
PRESS [EXIT] DTC P0630 was detected.
P0630 [VIN Not Programmed
or Mismatch - ECM/PCM]
Please input the VIN.
PRESS [EXIT] Possible cause:
To Menu Screen
17-digit VIN
displayed 3. Select VIN
DTC P0630 Set VIN Previously StoredVIN Not Stored
[EXIT] [EXIT][EXIT] 2. VIN WRITEVIN
Select VIN READ
1. VIN READ 1. VIN READ
ERROR
ECM does not respond the VIN.
1: VIN is not written yet.
2: Vehicle does not support this
function.
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-13
203 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3. READ VIN (Vehicle Identification Number)
(a) Read VIN using a hand-held tester.

START
Confirm vehicle VIN
Preparation:
1. Connect hand-held tester to DLC3
2. Turn ignition switch to ON
3. Turn tester ON
Hand-held tester operation:
Write:
Menu Screen:
This function overwrites the
following VIN with a new VIN.
*********************************
[ VIN ]
*********************************
[YES] to Continue
[NO] to EXIT
To Menu ScreenContinued on next page
NOTICE
Do you wish to continue?
[YES]
[NO] 1. Select DIAGNOSIS
2. Select ENHANCED OBD ll
3. Select VIN
1. VIN READ 1. VIN READVIN
Select VIN WRITE
[YES] or [NO]
[YES] 2. VIN WRITE
To Menu
Screen
[NO]
CONFIRMATION
This function will erase the
DTCs automatically after
writing the VIN.
Do you wish to continue?
[YES]
17-digit VIN displayed VIN Previously Stored
05-14
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
204 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4. WRITE VIN
(a) Write VIN using the hand-held tester.

Your VIN is incorrect.
Please enter the VIN again.
Input a new VIN
PRESS [ENTER] If you want to clear the VIN,
press [NO] key.
To Menu Screen
Writing Succeeded
[ENTER] Continued from previous page
WRITING COMPLETE
NOW WRITING
Input Error
INPUT ERROR
[EXIT] to RETURN
[EXIT]
WRITING FAILED
Turn IG OFF, then ON.
Please try again.
PRESS [EXIT]
[EXIT]Writing Error
SET NEW VIN
Press [RIGHT]/[LEFT] to shift
the cursor right/left.
Press [UP]/[DOWN] to
increase/decrease value.
Or, input digit with the 10 key.
PRESS [ENTER]CONFIRMATION
PRESS [ENTER] Vehicle is stopped.
New Registration
[ENTER]
[ENTER]
PRESS [ENTER]
Communication Error
[ENTER]
COMMUNICATION ERROR
PRESS [EXIT] Turn IG OFF, then ON.
VIN input method
The following VIN has been
written correctly.
The DTCs have been erased
correctly.
To Menu Screen To Menu Screen
[EXIT] Input Instructions
Engine is not running.
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-15
205 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)

I39194
P1 Park/Neutral Position Switch
Center J/BNavigation ECU
Passenger Side J/BN3 RL 14
Y
3K 13
3C1
G
IF311
GR
4K13
4A6
L
IM120
R-B
1 RL 05-1844
- DIAGNOSTICSNAVIGATION SYSTEM
2034 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REVERSE SIGNAL CIRCUIT
CIRCUIT DESCRIPTION
The navigation ECU receives the reverse signal from the park/neutral position switch and information about
the GPS antenna, and then adjusts the vehicle position.
WIRING DIAGRAM
05IT1-02

I40178
N3
RL
G26080
Park/Neutral Position Switch Assy:
P1
- DIAGNOSTICSNAVIGATION SYSTEM
05-1845
2035 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT REVERSE POSITION INDICATOR(COMBINATION METER ASSY)
(a) When moving the shift lever to the R position, check if ºRº lights up in the combination meter.
OK: ºRº lights up.
NG Go to step 3
OK
2 INSPECT NAVIGATION ECU(RL)
(a) Disconnect the navigation ECU connector N3.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
RL - Body groundShift lever R position "
Except R position10 to 14 V " Below 1 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE NAVIGATION ECU (SEE PAGE 67-9)
3 INSPECT PARK/NEUTRAL POSITION SWITCH ASSY
(a) Disconnect the park/neutral position switch connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
P1-1 - P1-2Shift lever is moved to R
position.Below 1 W
P1-1 - P1-2Shift lever is moved to ex-
cept R position.10 kW or higher
NG REPLACE PARK/NEUTRAL POSITION SWITCH
ASSY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR

I41227
GAUX V13
Video (Video Adapter) TerminalMulti-display
Controller Sub-assy
SB3
8
R30
CE 05-1744
- DIAGNOSTICSREAR SEAT ENTERTAINMENT SYSTEM
1934 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
VIDEO (VIDEO ADAPTOR) TERMINAL SET SIGNAL CIRCUIT
WIRING DIAGRAM
05IVA-01

I40833
Video (Video Adapter) Terminal:
Multi-display Controller Sub-assy:CE
GAUX
V13
R30
- DIAGNOSTICSREAR SEAT ENTERTAINMENT SYSTEM
05-1745
1935 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(VIDEO (VIDEO ADAPTOR) TERMINAL -
MULTI-DISPLA Y CONTROLLER SUB-ASSY)
(a) Disconnect the video (video adapter) terminal and multi-
display controller sub-assy connectors.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified condition
CE - GAUXAlwaysBelow 1 W
CE - Body groundAlways10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(See page 05-1704)

I40585
Infrared Ray Emitted Portion
05-1748
- DIAGNOSTICSREAR SEAT ENTERTAINMENT SYSTEM
1938 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
A REMOTE CONTROL SYSTEM DOES NOT OPERATE
INSPECTION PROCEDURE
1 CHECK BATTERY(SWITCH & VOLUME ASSY)
(a) Check battery.
(1) Check that the dry-cell battery used for the switch & volume assy is not dead.
Standard: It is not dead
NG BATTERY IS DEAD
OK
2 CLEAN THE INFRARED RAY EMITTED PORTION
(a) Clean the infrared ray emitted portion.
(1) Clean the infrared ray emitted portion on the televi-
sion display assy.
(2) Check whether the same malfunction occurs.
Standard: The function returns to normal.
NG PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
(See page 05-1704)
OK
NORMAL
05AU5-04