TOYOTA HIGHLANDER 2001 Service Repair Manual

N17398
HeadCapstan
Pinch Roller
- DIAGNOSTICSAUDIO SYSTEM
05-1687
1877 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TAPE IS TANGLED DUE TO INCORRECT TAPE SPEED OR
AUTO-REVERSE MALFUNCTION
INSPECTION PROCEDURE
1 CHECK FOR ANY FOREIGN OBJECT
(a) Check for any foreign objects.
(1) Check that no foreign objects or defects are detected in the cassette tape player of the radio re-
ceiver assy.
OK: No foreign objects or defects are detected.
NG REMOVE FOREIGN OBJECT
OK
2 REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK(BELOW 90 MIN.)
(a) Replace the cassette tape with another one and recheck.
(1) Replace the cassette tape with another normal one (90
minutes. or less) to see if the same
trouble occurs again.
OK: Malfunction disappears.
OK CASSETTE TAPE FAULTY
NG
3 CLEAN HEAD AND CHECK OPERATION
(a) Head cleaning
(1) Raise the cassette door with your finger. Using a
pencil or similar object, push in the guide.
(2) Using a cleaning pen or cotton applicator soaked in
cleaner, clean the head surface, pinch rollers and
capstans.
(3) Check if the same trouble occurs again.
OK: Malfunction disappears.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
HEAD DIRTY
055LV-12

05-1522
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1712 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
The DTCs output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are displayed by blinking the SRS warning light.
HINT:

Make sure that DTC B1281 has not been output. If DTC B1281 has been output, refer to the multiplex
communication system.

When each warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an
internal ground short in each ECU is suspected.

The DTC output mode signal is transmitted through BEAN to each ECU including the airbag sensor
assy center, except for the skid control ECU with actuator. Thus when all systems except the ABS sys-
tem do not enter DTC output mode, it can be suspected that there is an ECM malfunction.
0526A-05

H45940
Airbag Sensor
Assy Center
A1724
1
Combination Meter4A5Short Connector
GR
M3
Multi-DisplayBR
IB2IF310A1722
21 IB2
4C2
A11
Body ECU IL2
B9 54F
B10 7
6
6C11 P51
1
2
2S30
S30
S31 S31 9
A10MPX+
MPX-
MPX1
MPX2
MPX1
MPX2
7BR R G V
G
BR SB
O
SB 4 11
7
8G5 Gateway ECU A/C Control Assembly
Passenger Side J/B
V
E6 18
3J 12
3E1 3H5
MPX1
IC YT4 (*1) (*1)12
SW with ECU Power Window Master
GR
V
31
(*3) Center J/B
G
*1: w/ Navigation System
*2: w/o Navigation System
*3: w/ Theft Deterrent System G
(*2)
Y
9
C12 MPX+
MPX-IL21
GR29
E6
20
E5 J16
J/C
Passenger Side J/B
4N1 O
DD
TC
CGD
IF33
TC
4 W-B W-BTheft Deterrent ECUEngine
Control Module 8
O
OP D3
DLC3W MPD1
MPD2
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1523
1713 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

H40173
A67445H40173
A67445H44085
DLC3:
TC
ECM:
TC
E5
H40173
DLC3
CG
05-1524
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1714 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS(DLC3 - ECM)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the airbag sensor assy center connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
DLC3 (TC) -
E5-20 (TC)AlwaysBelow 1 W
NG REPAIR OR REPLACE WIRE HARNESS(TC of
DLC3 - TC of ECM)
OK
2 CHECK WIRE HARNESS(CG of DLC3 - BODY GROUND)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
DLC3 (CG) -
Body groundAlwaysBelow 1 W
NG REPAIR OR REPLACE WIRE HARNESS(CG of
DLC3 - BODY GROUND)
OK

A67445
ECM:
TC
E5
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1525
1715 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS(TC of ECM - BODY GROUND)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
E5-20 (TC) -
Body groundAlways1MW or Higher
NG REPAIR OR REPLACE WIRE HARNESS AND
EACH ECU
OK
4 REPLACE ECM
(a) Check that the ECM.
Result:
A: Normal system code is output.
B: DTC is output.
C: ECM does not set the DTC output mode.
A END
B GO TO INSPECTION PROCEDURE OF DTC
OUTPUT
C
REPLACE AIRBAG SENSOR ASSY CENTER (SEE PAGE 60-53)

B80404
2A1G IC3
BATTERY FL MAIN W W
F7
FUSIBLE
LINK BLOCKEngine Room J/B
SECURITY ECU-B
D.C.C
3
12I
1 W - L5
BR
109 INSTRUMENT PANEL J/B ASSY
2A 451DP
EE J17
J/C
P11
IL1O2 Theft Warning ECU Assy T4
+B1
+B2
SH- 13
IF12
W 4
IC3L L
LG
IF3 17
B
2 IC3
T1
Theft Deterrent
Horn B - O
1
05-2028
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
2218 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
THEFT DETERRENT HORN CIRCUIT
CIRCUIT DESCRIPTION
When the theft deterrent system is operating, the relay in the ECU turns on and off in a cycle of approximately
0.2 seconds, causing the theft warning horn to blow (see the wiring diagram below).
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK THEFT WARNING ECU ASSY (SECURITY)
(a) Remove the SECURITY fuse from the engine room J/B.
(b) Measure the resistance.
Standard: Below 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
05ITM-04

B63408
Wire Harness Side
T4
Theft Warning ECU Assy
B51580
1
B51580
1
B64984
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
05-2029
2219 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK THEFT WARNING ECU ASSY (THEFT WARNING ECU - BODY GROUND)
(a) Disconnect the T4 ECU connector.
(b) Measure the voltage between the T4 ECU connector and
body ground.
Standard:
Tester ConnectionSpecified Condition
T4-3 (+B2) - Body ground10 to 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK SECURITY HORN ASSY
(a) Disconnect the T1 security horn connector.
(b) Check operation of the security horn.
Standard:
Measurement ConditionSpecified Condition
Battery positive (+) " Terminal 1
Battery negative (-) " Body groundSecurity horn blows
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

B63408
B58961
1
B63408
B58961
1
B64978
Wire Harness Side
T1
Security Horn Assy T4
Theft Warning ECU Assy
05-2030
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
2220 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK SECURITY HORN ASSY (THEFT WARNING ECU ASSY - SECURITY HORN
ASSY)
(a) Disconnect the T4 ECU connector.
(b) Disconnect the T1 security horn connector.
(c) Measure the resistance between the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
T4-1 (SH-) - T1-1Below 1 W
NG REPLACE SECURITY HORN ASSY
OK

F46776
S27
Skid Control ECU
With Actuator Passenger Side J/B S15
Stop Light SW
Instrument Panel J/B
BatterySTP
27 IC4 4A11
4L
STOP
F7
FL Block
FL MAIN
EAJ4
J/CW-B
GND1 G-Y B 3
B
1 2
Y
1E1
1A1
B
B ALT32
A
EB W-BW-B W
1222 05-748
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
938 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
STOP LAMP SWITCH CIRCUIT
CIRCUIT DESCRIPTION
When the stop lamp switch is ON (brake pedal depressed), the skid control ECU suspends the tire pressure
warning system.
WIRING DIAGRAM
05IOZ-02

F45562
Wire Harness Side:
S27STP
GND1
- DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
05-749
939 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK STOP LAMP SWITCH OPERATION
(a) Check that the stop lamp comes on when the brake pedal is depressed, and goes off when the brake
pedal is released.
OK:
Stop lamp functions normally.
NG Go to step 3
OK
2 CHECK HARNESS AND CONNECTOR(BRAKE ACTUATOR ASSY - STOP LAMP
SWITCH ASSY) (SEE PAGE 01-36)
(a) Disconnect the brake actuator assy connector.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Switch conditionTester connectionSpecified condition
Brake pedal depressedS27-27 (STP) -
S27-32 (GND1)10 to 14 V
Brake pedal releasedS27-27 (STP) -
S27-32 (GND1)Below 1.5 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-740)
3 CHECK REAR COMBINATION LAMP ASSY LH
NG REPLACE REAR COMBINATION LAMP ASSY
LH
OK