Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 206dv cib2796
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download cib2796 documenatation <<
Text preview - extract from the document
05-1852
DIAGNOSTICS - ENGINE IMMOBILIZER SYSTEM 05A2G-02
DTC B2796 NO COMMUNICATION IN IMMOBILISER
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 is impossible.
DTC No. DTC Detection Condition Trouble Area
S Key
S Wire harness
B2796 No communication
S Transponder key amplifier
S Transponder key ECU assy
B2798 Communication error S Key
WIRING DIAGRAM
T6
I14
Transponder Key ECU Assy
Transponder Key Amplifier
Amplifier
ANT1 VC5 1 Y-B 8
VC5
CODE 4 Y 11
CODE
Coil
TXCT 5 Y-R 12
TXCT
GND 7 BR-R 13
AGND
ANT2
B62676
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2035
05-1853
DIAGNOSTICS - ENGINE IMMOBILIZER SYSTEM
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 will not start the engine.
(c) Select IMMOBILISER on the hand-held tester.
OK:
SET Ignition switch ON
UNSET Without key
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
(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 will not start the engine.
(c) Select the item ANTENNA COIL on the hand-held tester.
OK: NORMAL
NG: FAIL
NG REPLACE TRANSPONDER KEY ECU ASSY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2036
05-1854
DIAGNOSTICS - ENGINE IMMOBILIZER SYSTEM
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 T6 ECU and I14 amplifier connectors.
Wire Harness Side
(b) Check the resistance between the wire harness side con-
nectors.
T6 Standard:
Transponder Key ECU Assy Terminal No. Specified Condition
T6-8 (VC5) - I14-1 (VC5) Below 1
T6-1 1 (CODE) - I14-4 (CODE) Below 1
T6-12 (TXCT) - I14-5 (TXCT) Below 1
T6-13 (AGND) - I14-7 (GND) Below 1
(c) Check the resistance between the T6 ECU or I14 amplifi-
er wire harness side connector and the body ground.
I14 Standard:
Transponder Key Amplifier Terminal No. Specified Condition
T6-8 (VC5) or I14-1 (VC5) -
10 k or higher
Body ground
T6-1 1 (CODE) or I14-4 (CODE) -
10 k or higher
Body ground
T6-12 (TXCT) or I14-5 (TXCT) -
10 k or higher
B63404 Body ground
B55013 B64974
T6-13 (AGND) or I14-7 (GND) -
10 k or higher
Body ground
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
5 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier, check that the engine starts.
NG REPLACE TRANSPONDER KEY ECU ASSY
OK
NORMAL (TRANSPONDER KEY AMPLIFIER DEFECTIVE)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2037
◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo