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:
Installation
1. INSTALL CENTER AIRBAG SENSOR ASSEMBLY
Check that the ignition switch is off.
Check that the battery negative (-) terminal is
disconnected.
CAUTION:
After disconnecting the negative battery
terminal, wait for at least 90 seconds before
starting the operation.
&n ...
Short to B+ in CAN Bus Line
DESCRIPTION
A short to B+ is suspected in the CAN bus wire when the resistance between
terminals 6 (CANH) and 16
(BAT), or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 kΩ.
Symptom
Trouble Area
The resistance between terminals 6 (CANH) and 16 (BAT), or
...
Engine unit
COMPONENTS
...
