immobilizer TOYOTA HIGHLANDER 2001 Service Owner's Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 1094 of 2572
05-2004
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2194 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2794 UNMATCHED ENCRYPTION CODE
CIRCUIT DESCRIPTION
This DTC is output when a key with an incomplete key code is inserted into the ignition key cylinder.
DTC No.DTC Detection ConditionTrouble Area
B2794Key with incomplete key code is insertedKey
INSPECTION PROCEDURE
1 REPLACE KEY
052II-10
Page 1095 of 2572
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-2005
2195 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2795 UNMATCHED KEY CODE
CIRCUIT DESCRIPTION
This DTC is output when a key with a key code that has not been registered in the ECU is inserted into the
ignition key cylinder.
DTC No.DTC Detection ConditionTrouble Area
B2795Key with unregistered key code is insertedKey
INSPECTION PROCEDURE
1 DELETE DTC AND INSERT ALL PRESENTLY AVAILABLE KEYS TO CHECK
WHETHER ENGINE STARTS OR NOT
OK NO PROBLEM
(BECAUSE OF KEY RE-REGISTRATION)
NG
REPLACE KEY THAT DOES NOT START ENGINE
052IJ-12
Page 1096 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
05-2006
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2196 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2796 NO COMMUNICATION IN IMMOBILIZER
SYSTEM
DTC B2798 COMMUNICATION MALFUNCTION NO. 2
CIRCUIT DESCRIPTION
This code is stored in the memory when a key that does not have a transponder chip is inserted or if commu-
nication between the key and transponder key ECU assy is impossible.
DTC No.DTC Detection ConditionTrouble Area
B2796No communication
Key
Wire harness
Transponder key amplifier
Transponder key ECU assy
B2798Communication errorKey
WIRING DIAGRAM
05A2G-10
Page 1097 of 2572
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-2007
2197 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
(IMMOBILISER 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 ºIMMOBILIZERº on the hand-held tester.
OK: ºSETº (Ignition switch ON) appears on the screen.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
IMMOBILIZERImmobilizer system status
/SET or UNSETUNSET: Without key
SET: Ignition switch ON-
OK NORMAL
NG
2 CHECK WHETHER ENGINE STARTS WITH OTHER KEYS
(a) Check whether the engine starts with the other keys for the vehicle.
OK RE-REGISTER OR REPLACE KEY THAT WILL
NOT START ENGINE
NG
HINT:
Start the inspection from step 3 when using the hand-held tester and start from step 4 when not using the
hand-held tester.
3 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) On the hand-held tester, select the following menu item: DIAGNOSIS/ENHANCED OBD II/DATA
LIST/IMMOBILIZER/ANTENNA COIL. Read the values.
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 CHECK AND REPLACE TRANSPONDER KEY
ECU ASSY
OK
Page 1098 of 2572
B55013B63404B55013B63404B64974
T7
Transponder Key Amplifier Wire Harness Side
T14
Transponder Key ECU Assy
05-2008
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2198 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY - TRANSPONDER KEY
AMPLIFIER) (TRANSPONDER KEY ECU ASSY OR TRANSPONDER KEY AMPLIFI-
ER - 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
5 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier with a normally functioning amplifier, check that the en-
gine starts.
NG REPLACE TRANSPONDER KEY ECU ASSY
OK
REPLACE TRANSPONDER KEY AMPLIFIER
Page 1099 of 2572
B52550
T7
Transponder Key AmplifierT14
Transponder Key ECU Assy
GR
CODE
411CODE
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-2009
2199 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2797 COMMUNICATION MALFUNCTION NO.1
CIRCUIT DESCRIPTION
This DTC is output when an error occurs in normal communication.
HINT:
Some noise exists in the communication line.
DTC No.DTC Detection ConditionTrouble Area
B2797Keys are positioned too close to each other, or noise oc-
curred in communication line
Key
Wire harness
Transponder key amplifier
Transponder key ECU assy
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier with a normally functioning amplifier, check that the en-
gine starts.
OK NORMAL
(TRANSPONDER KEY AMPLIFIER DEFECTIVE)
NG
REPLACE TRANSPONDER KEY ECU ASSY
052IL-10
Page 1100 of 2572
B66227
E6
ECMT14
Transponder Key ECU Assy
IMI
IMO6
7EFIO
EFII 27
26V B 05-2010
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
2200 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B2799 ENGINE IMMOBILIZER SYSTEM
MALFUNCTION
CIRCUIT DESCRIPTION
This DTC is output when the ECM detects errors in communication between the transponder key ECU assy
and the ECM, or in the communication lines.
This DTC is also output when an engine start is attempted while the ECU communication ID between the
transponder key ECU assy and the ECM is different.
Before troubleshooting for this DTC, make sure that there is no DTC detected in the transponder key ECU.
If there is a key code-related DTC detected in the transponder key ECU assy, repair it first.
DTC No.DTC Detection ConditionTrouble Area
B2799
Error in communication between ECM and transponder
key ECU assy, and in communication line
Communication ID is different during communication with
transponder key ECUWire harness
Transponder key ECU assy
Transponder key amplifier
ECM
WIRING DIAGRAM
052IM-12
Page 1101 of 2572
B66220 YB66220 YB66229
T14
Transponder Key ECU Assy
E6
ECM Wire Harness Side
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-201 1
2201 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY - ECM)
(TRANSPONDER KEY ECU ASSY OR ECM - BODY GROUND)
(a) Disconnect the T14 ECU and E6 ECM connectors.
(b) Measure the resistance between the wire harness side
connectors.
Standard:
Symbols (Terminal No.)Specified Condition
EFIO (T14-6) - IMI (E6-27)Below 1 W
EFII (T14-7) - IMO (E6-26)Below 1 W
(c) Measure the resistance between the T14 or E6 wire har-
ness side connector and the body ground.
Standard:
Symbols (Terminal No.)Specified Condition
EFIO (T14-6) or IMI (E6-27) -
Body ground10 kW or higher
EFII (T14-7) or IMO (E6-26) -
Body ground10 kW or higher
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG
2 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier with a normally functioning amplifier, check that the en-
gine starts.
NG REPLACE TRANSPONDER KEY ECU ASSY
OK
NORMAL (TRANSPONDER KEY AMPLIFIER DEFECTIVE)
Page 1497 of 2572
E74086
D6
Door Courtesy Lamp Front RHBody ECU
D5
Door Courtesy Lamp Front LH
I14
Ignition Key Cylinder Illumination
T7 Ignition Key Cylinder Illumination
(Transponder Key Amplifier)Passenger Side J/B
I16
Interior Lamp
O5
Overhead J/B
Engine Room J/B
Instrument Panel J/B
F7
FL Block
*1: w/ Engine Immobilizer System
*2: w/o Engine Immobilizer System BR G O10
IN2 3
IN112
B12 PCYL
DCYL 19
B11
11
B12
ILE Y
L 10
IB2 O
1
2 12
3
IB1G V Y8
IL1
Y (*2)
G (*2)
21
Y (*1)
26G (*1)5
4J2
4FBR
1
4H
5
4D
13
12
4D7
4L
1
4N
6
4HW-B
W-B
V
12
IK3 R 3
2A DOME
D.C.C 1
2IG
W-B
B R
R5
IE1
8
IE1
1
IE1 1DOOR
OFF
ON2
3
WW
W
+B1
CTY 712
6
1KP FR DOOR
12
1DD FR DOOR
1
1AW
B3
2ALT
1
Battery
FL MAINIC 4D R
W-B
W
- DIAGNOSTICSLIGHTING SYSTEM
05-1607
1797 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
Page 1514 of 2572
052IA-27
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-1985
2175 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
ENGINE IMMOBILIZER SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Use this procedure to troubleshoot the engine immobilizer system.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
(see page 05-1987)
3 CRANK ENGINE FOR MORE THAN 10 SECONDS
4 CHECK DTC
(a) Check for DTCs and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC (SFI system and engine immobilizer system) by simulating
the original activity that the DTC suggested.
(1) If the DTC does not reoccur, proceed to A.
(2) If the DTC (SFI system) reoccurs, proceed to B.
(3) If the DTC (engine immobilizer system) reoccur, proceed to C.
B Go to SFI SYSTEM
(2AZ-FE engine: See page 05-1)
(3MZ-FE engine: See page 05-362)
C Go to step 8
A
5 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 and push the hand-held tester main switch ON.
(c) Select the item ºKEY SWº in the ºDATA LISTº and read its value displayed on the hand-held tester.
Transponder key ECU assy:
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
KEY SwitchUnlock warning switch signal
/ON or OFFON: Key is in ignition key cylinder
OFF: No key is in ignition key cyl-
inder
-
NG Go to DTC B2780 (see page 05-1998)