Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20tq5 terecu40
<< 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 terecu40 documenatation <<
Text preview - extract from the document
05-1882
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
05BTD-04
TERMINALS OF ECU
1. INSPECT INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)
Vehicle Rear Side Vehicle Front Side
1K
B6 B7 B9 B8
1L 1E
1C
Multiplex Network
Body ECU
1E
B6 B7
1K
1L B9 B8
1C
B67249
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2065
05-1883
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
(a) Disconnect the B7 ECU, 1C, 1E, 1K and 1L and 1C J/B connectors.
(b) Check the voltage and resistance between each terminal of the wire harness side connectors and body
ground.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
BECU (1C-24) -
W-L - Body ground
Body ground
Constant 10 to 14 V
BECU (1L-7) -
W-L - Body ground
Body ground
MPX1 (1E-7) -
R-L - Body ground Constant 10 k or higher
Body ground
MPX2 (B7-21) -
R-L - Body ground Constant 10 k or higher
Body ground
GND1 (1L-16) -
W-B - Body ground Constant Below 1
Body ground
GND2 (1K-17) -
W-B - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
2. CHECK AIRBAG SENSOR ASSY (AIRBAG ECU)
A21
A21
B A 6 5 4 B A 3 2 1 B A
6 5 4 3 2 1 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
12 11 10 9 8 7 28 27 26 25 24 23 22 21 20 19 18 12 11 10 9 8 7
B67254
(a) Disconnect the A21 ECU connector.
(b) Check the voltage and resistance of each terminal of the wire harness side.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
IG2 (A21-5) -
B-O - W-B Ignition Switch OFF ON 10 to 14 V
E1 (A21-27)
IG2 (A21-5) -
B-O - W-B Ignition Switch OFF ON 10 to 14 V
E2 (A21-28)
MPX1 (A21-24) -
R-L - Body ground Constant 10 k or higher
Body ground
MPX2 (A21-22) -
R-L - Body ground Constant 10 k or higher
Body ground
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2066
05-1884
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
Symbols (Terminal No.) Wiring Color Condition Specified Condition
E1 (A21-27) -
W-B - Body ground Constant Below 1
Body ground
E2 (A21-28) -
W-B - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
3. CHECK ECM
E8 E7 E6 E5 E4
B52395
(a) Disconnect the E4, E5 and E6 ECM connectors.
(b) Check the voltage and resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
BATT (E4-3) -
B-W - BR Constant 10 to 14 V
E1 (E6-1)
+BM E5-6) -
R - W-B Constant 10 to 14 V
ME01 (E6-4)
IGSW (E4-9) -
B-O - BR Ignition Switch OFF ON 10 to 14 V
E1 (E6-1)
+B E4-1) -
B-R - BR Ignition Switch OFF ON 10 to 14 V
E1 (E6-1)
+B2 E4-2) -
B-R - BR Ignition Switch OFF ON 10 to 14 V
E1 (E6-1)
MPX1 (E5-18) -
R-L - Body ground Constant 10 k or higher
Body ground
MPX2 (E5-29) -
V - Body ground Constant 10 k or higher
Body ground
E1 E6-1) -
BR - Body ground Constant Below 1
Body ground
ME01 E6-4) -
W-B - Body grond Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2067
05-1885
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
4. CHECK A/C AMPLIFIER ASSY (A/C ECU)
A9
B67255
(a) Disconnect the A9 ECU connector.
(b) Check the voltage and resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
+B (A9-11) -
W-L - W-B Constant 10 to 14 V
GND (A9-1)
IG (A9-40) -
R-Y - W-B Ignition Switch OFF ON 10 to 14 V
GND (A9-1)
ACC (A9-12) -
P - W-B Ignition Switch OFF ACC or ON 10 to 14 V
GND (A9-1)
MPX+ (A9-2) -
V - Body ground Constant 10 k or higher
Body ground
MPX- (A9-3) -
R-L - Body ground Constant 10 k or higher
Body ground
GND (A9-1) -
W-B - Body grond Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
5. CHECK COMBINATION METER
C10
B67255
(a) Disconnect the C10 meter connector.
(b) Check the voltage and resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
+B (C10-12) -
W-L - BR Constant 10 to 14 V
ES (C10-30)
IG+ (C10-32) -
B-R - BR Ignition Switch OFF ON 10 to 14 V
ES (C10-30)
MPX1 (C10-29) -
R-L - Body ground Constant 10 k or higher
Body ground
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2068
05-1886
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
Symbols (Terminal No.) Wiring Color Condition Specified Condition
MPX2 (C10-28) -
V - Body ground Constant 10 k or higher
Body ground
ES (C10-30) -
BR - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
6. CHECK MULTIPLEX NETWORK DOOR ECU REAR RH (POWER SLIDE DOOR ECU RH)
P28 P27
B67256
(a) Disconnect the P27 and P28 ECU connectors.
(b) Check the voltage and resistance of each terminal of the wire harness side connectors.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
B (P28-2) -
B - W-B Constant 10 to 14 V
GND (P28-8)
ECUB (P27-10) -
W - W-B Constant 10 to 14 V
GND (P28-8)
MPX1 (P27-22) -
R - Body ground Constant 10 k or higher
Body ground
GND (P28-8) -
W-B - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
7. CHECK MULTIPLEX NETWORK DOOR ECU REAR LH (POWER SLIDE DOOR ECU LH)
P26 P25
B67256
(a) Disconnect the P25 and P26 ECU connectors.
(b) Check the voltage and resistance of each terminal of the wire harness side connectors.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
B (P26-2) -
B-W - W-B Constant 10 to 14 V
GND (P26-8)
ECUB P25-10) -
W - W-B Constant 10 to 14 V
GND (P26-8)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2069
05-1887
DIAGNOSTICS - MULTIPLEX COMMUNICATION SYSTEM
Symbols (Terminal No.) Wiring Color Condition Specified Condition
MPX1 (P25-22) -
R - Body ground Constant 10 k or higher
Body ground
GND (P26-8) -
W-B - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
8. CHECK MULTIPLEX NETWORK DOOR ECU BACK (POWER BACK DOOR ECU)
P14 P13
B67256
(a) Disconnect the P13 and P14 ECU connectors.
(b) Check the voltage and resistance of each terminal of the wire harness side connectors.
Standard:
Symbols (Terminal No.) Wiring Color Condition Specified Condition
B (P14-2) -
B-R - W-B Constant 10 to 14 V
GND (P14-8)
ECUB (P13-10) -
W-L - W-B Constant 10 to 14 V
GND (P14-8)
IG (P13-9) -
B-R - W-B Ignition Switch OFF ON 10 to 14 V
GND (P14-8)
MPX1 (P13-22) -
R-L - Body ground Constant 10 k or higher
Body ground
GND (P14-8) -
W-B - Body ground Constant Below 1
Body ground
If the result is not as specified, there may be a malfunction on the wire harness side.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2070
◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo