engine TOYOTA HIGHLANDER 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 880 of 2572
I39185
Radio Receiver Assy Stereo Component Amplifier Assy
Passenger Side J/B
Center J/B
Engine Room J/B
Instrument Panel J/BI15
Ignition SW
F7
Fusible Link BlockAMP+
ACC
+B
GND J18
J/C AMP+
RAD No.1
D.C.C
RAD No.2
AM1ACC AM1
BatteryFL MAIN
J19
J/CS221
S237 S222
A A GGP
W
IO114 IR26
4D8
4E2V
Y R43
L-B
3C4
3C5
R-Y
IR21
R-Y
IL12
LG
IK320
L-Y
2C4
2I1
2 3
WL
1C6 1C2
2 1 1A1 1H1
B
W
12ALT
3W
BB
BFW-B A A W-BAW-B
S2312 05-1638
- DIAGNOSTICSAUDIO SYSTEM
1828 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
POWER SOURCE CIRCUIT (STEREO COMPONENT AMPLIFIER
ASSY)
CIRCUIT DESCRIPTION
This circuit provides the power to the stereo component amplifier assy.
WIRING DIAGRAM
05IRK-01
Page 977 of 2572
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2065
2255 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1261 ECM (ENGINE ECU) COMMUNICATION
STOP
CIRCUIT DESCRIPTION
B1261 will be output when the communication between the ECM and multiplex network body ECU stops
for more than 10 seconds.
DTC No.DTC Detecting ConditionTrouble Area
B1261No communication from ECM for more than 10 secondsECM
Wire harness
0523Z-04
Page 978 of 2572
B78728
Engine Room J/BB10
Multiplex Network Body ECU
ECM
Combination Meter Assy (Meter ECU)J7
J/C E6
MREL
13E5
MPX2 4
IK3
MPX+9 BatteryBR
J2
J/C FL MAINMPX1
4
7 5 2I 2B
2F2B 2B
F7
FL Block
Assy6
15
EFI
No.1EFI
Relay
B-W W
IK2
E5 BATT
EH3
+B IK2
W-BW3
Y
A BBR
GR*
1
IE1
ED 10
11
E5
W W
W13E6
829
A E9 E7
11
BR 6
IL2 1 GR
GR
SB
C12
*
1: 2AZ-FE
*2: 3MZ-FEA
Sliding Roof
Contorl ECUMPX1 S20W
MPX1
*
2
*1
*2EE
+B2 E51
2 1
2
W
10 P-L18
E1 05-2066
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2256 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
Page 980 of 2572
A53766
E7
E8E9 E6E5
05-2068
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2258 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(1) Disconnect the connectors of the meter assy, ECM and body ECU.
(2) Inspect the continuity between terminals E6-18 (MPX1) of the ECM vehicle's side connector and
B10-6 (MPX1) of the body ECU vehicle's side connector.
Standard:
Symbols (Terminal No.)Specified Condition
MPX1 (E6-18) @ MPX1 (B10-6)
(equipped with 1MZ-FE)Continuity
MPX1 (E6-18) @ MPX1 (B10-6)
(equipped with 2AZ-FE)Continuity
(3) Inspect the continuity between terminals E6-29 (MPX2) of the ECM vehicle's side connector and
C12-9 (MPX+) of the meter assy vehicle's side connector.
Standard:
Symbols (Terminal No.)Specified Condition
MPX2 (E6-29) @ MPX+ (C12-9)
(equipped with 1MZ-FE)Continuity
MPX2 (E6-29) @ MPX+ (C12-9)
(equipped with 2AZ-FE)Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
2 CHECK ECM
(a) Inspect the ECM (power source input).
NOTICE:
Do not disconnect the ECM connector. The inspection should be started from the backside of the
connector.
Standard:
Symbols (Terminal No.)In/OutputConditionSpecified Condition
BATT (E5-3) @ Body groundInputConstant9 - 14 V
+B (E5-1) @ Body groundInputEngine stopped, ignition switch ON9 - 14 V
+B2 (E5-2) @ Body groundInputEngine stopped, ignition switch ON9 - 14 V
NG REPAIR OR REPLACE FUSE OR WIRE
HARNESS AND CONNECTOR
OK
Page 989 of 2572
B78731
Combination Meter
Assy (Meter ECU)ECM
Instrument
Panel J/B
Air Conditioner
Amplifer Assy
(A/C ECU) Center J/B
Center
J/B MPX2
B
22 E6
IL2
C12
E2 GR
9
MPX+
MPX-
MPX-C11
W-B
W-B3E
3F
1310 C11
122
L-G 11K1G 10BRIC3 W-L2A 2AFL Main D.C.C.
Battery 1
DOME
V
3
3D
93F
L-G
IL211
V
114D
64H
IK3 12 R
A10 9C11 21SB29
1
V 343
ECU-B Engine Room J/B
2IFL Block Assy
W
5
3J 3E
121Y
IB C11B1 1
Center
J/B
G WF7
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2081
2271 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
Page 1088 of 2572
B51715B79970
T1410
G K4
Unlock Warning
Switch Assy
1
2 W-B
G
KSW DD
IC W-B4L 4G 9
7J6
Junction Connector
Passenger
Side J/BTransponder Key ECU Assy 05-1998
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2188 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2780 PUSH SWITCH/KEY UNLOCK WARNING
SWITCH MALFUNCTION
CIRCUIT DESCRIPTION
This DTC will be output if the transponder key ECU does not detect that the unlock warning switch is ON
even when the ignition switch is ON (under normal condition, the unlock warning switch is ON when the igni-
tion switch is ON).
DTC No.DTC Detection ConditionTrouble Area
B2780Unlock warning switch ON is not detected when ignition
switch is ONUnlock warning switch assy
Wire harness
Transponder key ECU assy
WIRING DIAGRAM
05A2A-06
Page 1089 of 2572
B51581
21
3 4Pushed Not pushed
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-1999
2189 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the
hand-held tester.
1 READ VALUE OF HAND-HELD TESTER
(TRANSPONDER KEY ECU (SWITCH CONDITION))
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON with the key that cannot start the engine.
(c) On the hand-held tester, select the following menu item: DIAGNOSIS/ENHANCED OBD II/DATA
LIST/IMMOBILISER/KEY SW. Read the values.
OK: ºONº (Key is in ignition key cylinder) appears on the screen.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
KEY SWUnlock warning switch signal
/ON or OFFON: Key is in ignition key cylinder
OFF: No key is in ignition key cyl-
inder
-
NG Go to step 2
OK
REPLACE TRANSPONDER KEY ECU ASSY
2 INSPECT UNLOCK WARNING SWITCH ASSY
(a) Remove the unlock warning switch.
(b) Measure the resistance of the unlock warning switch.
Standard:
Tester ConnectionSwitch PositionSpecified Condition
1 - 2PushedBelow 1 W
1 - 2Not pushed10 kW or higher
NG REPLACE UNLOCK WARNING SWITCH ASSY
OK
Page 1090 of 2572
B63404
B65748B78556
T14
Transponder Key ECU Assy
K4
Unlock Warning Switch Assy Wire Harness Side
KSW
05-2000
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2190 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS
(TRANSPONDER KEY ECU ASSY - UNLOCK WARNING SWITCH ASSY)
(a) Disconnect the T14 ECU and K4 switch connectors.
(b) Measure the resistance between the wire harness side
connectors.
Standard:
Symbols (Terminal No.)Specified Condition
T14-10 (KSW) - K4-2Below 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE TRANSPONDER KEY ECU ASSY
Page 1091 of 2572
B62676
T7
Transponder Key AmplifierT14
Transponder Key ECU Assy
VC5
CODE
TXCT
AGND B
GR
W
R8
11
12
13 1
4
5
7 TXCT
GND
ANT2 ANT1
Transponder
Key CoilVC5
CODE
Amplifier
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-2001
2191 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2784 ANTENNA COIL OPEN/SHORT
CIRCUIT DESCRIPTION
The transponder key coil is built into the transponder key amplifier and receives a key code signal from the
transponder chip in the key. This signal is amplified by the amplifier, then it is output to the transponder key
ECU assy.
DTC No.DTC Detection ConditionTrouble Area
B2784Antenna coil is open/short
Wire harness
Transponder key amplifier
Transponder key ECU assy
WIRING DIAGRAM
05A2C-09
Page 1092 of 2572
B55013B63404B55013B63404B64974
T7
Transponder Key Amplifier Wire Harness Side
T14
Transponder Key ECU Assy
05-2002
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2192 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the
hand-held tester.
1 READ VALUE OF HAND-HELD TESTER
(IMMOBILIZER ECU (TRANSPONDER KEY ECU ASSY) (SWITCH CONDITION))
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON with the key that does not start the engine.
(c) Select the item ºANTENNA COILº on the hand-held tester.
OK: ºNORMALº
(Antenna coil is normal) appears on the screen.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
ANTENNA COILAntenna coil condition
/NORMAL or FAILNORMAL: Antenna coil is normal
FAIL: Antenna coil is abnormal-
NG Go to step 2
OK
REPLACE TRANSPONDER KEY ECU ASSY
2 CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY - TRANSPONDER KEY
AMPLIFIER) (TRANSPONDER KEY ECU ASSY OR
TRANSPONDER KEY AMPLIFIER - BODY GROUND)
(a) Disconnect the T14 ECU and T7 amplifier connectors.
(b) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
T14-8 (VC5) - T7-1 (VC5)Below 1 W
T14-1 1 (CODE) - T7-4 (CODE)Below 1 W
T14-12 (TXCT) - T7-5 (TXCT)Below 1 W
T14-13 (AGND) - T7-7 (GND)Below 1 W
T14-8 (VC5) or T7-1 (VC5) -
Body ground10 kW or higher
T14-1 1 (CODE) or T7-4 (CODE) -
Body ground10 kW or higher
T14-12 (TXCT) or T7-5 (TXCT) -
Body ground10 kW or higher
T14-13 (AGND) or T7-7 (GND) -
Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE TRANSPONDER KEY AMPLIFIER