Toyota Sienna Service Manual: Diagnostic trouble code chart
1. DTCS FOR OCCUPANT CLASSIFICATION SYSTEM
If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below (proceed to the page listed for that circuit).
HINT: When DTC B1150/23 is detected as a result of troubleshooting for the airbag system, perform troubleshooting for the Occupant Classification System as shown in the chart below.
Occupant Classification ECU
- Passenger Side Buckle Switch Circuit Malfunction
- Front Occupant Classification Sensor LH Circuit Malfunction
- Front Occupant Classification Sensor RH Circuit Malfunction
- Rear Occupant Classification Sensor LH Circuit Malfunction
- Rear Occupant Classification Sensor RH Circuit Malfunction
- Front Occupant Classification Sensor LH Collision Detection
- Front Occupant Classification Sensor RH Collision Detection
- Rear Occupant Classification Sensor LH Collision Detection
- Rear Occupant Classification Sensor RH Collision Detection
- Center Airbag Sensor Assembly Communication Circuit Malfunction
- Occupant Classification Sensor Power Supply Circuit Malfunction
- Open in Occupant Classification ECU Battery Positive Line
- Occupant Classification ECU Malfunction
- Sleep Operation Failure of Occupant Classification ECU
- Trouble in Passenger Airbag ON / OFF Indicator
Data list / active test
HINT:
By accessing the DATA LIST displayed by the intelligent
tester, you can perform such functions as reading the values
of switches and sensors without removing any parts. Reading
the DATA LIST ...
Passenger Side Buckle Switch Circuit Malfunction
DTC B1771 Passenger Side Buckle Switch Circuit Malfunction
DESCRIPTION
The passenger side buckle switch circuit consists of the occupant
classification ECU and the front seat
inner belt assembly ...
Other materials:
Reassembly
1. Install position indicator slide cover
(a) Install the position indicator slide cover No.2 to the
position indicator slide cover.
2. INSTALL POSITION INDICATOR SLIDE COVER
(a) Install the position indicator slide cover to the shift
lever assembly.
(b) Install the shift lever slide cov ...
Voice Recognition Difficulty
INSPECTION PROCEDURE
1 CHECK CONDITION
Check if the system's voice recognition level is low by
using only one particular voice.
OK:
System's voice recognition level is low with any
voice.
2 CHECK MAP DISC
Check that the map disc is not deformed or cracked.
OK:
No deformation ...
Removal
1. REMOVE FRONT WHEELS
2. REMOVE FRONT STABILIZER LINK ASSEMBLY LH
HINT:
(See page SP-26)
3. REMOVE FRONT STABILIZER LINK ASSEMBLY RH
HINT:
Remove the RH side by the same procedures as the LH
side.
4. REMOVE CENTER EXHAUST PIPE ASSEMBLY
HINT:
(See page EX-8)
5. REMOVE NO. 1 FRONT STABILIZ ...
