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:
Dtc check / clear
1. DTC CHECK (SENSOR CHECK)
(a) After the indicator check is completed, the system
enters the DTC check mode automatically.
(b) Read the codes displayed on the panel. Refer to the
list of codes (See page AC-19) when reading the
codes. (Trouble codes are output at the temperature
display. ...
Cooling system
On-vehicle inspection
1. INSPECT FOR COOLANT LEAK
CAUTION:
Do not remove the radiator cap while the engine and
radiator are still hot. Pressurized, hot engine coolant
and steam may be released and cause serious
burns.
NOTICE:
Before performing each inspection, turn the A/ ...
Room light assembly
ON-VEHICLE INSPECTION
1. ROOM LIGHT ASSEMBLY NO.2
Check that the resistance exists between the
terminals.
Resistance:
Below 1 Ω
2. INTERIOR DOME LIGHT SWITCH ASSEMBLY
Check that there is resistance between the
terminals at each switch position as shown in the
cha ...
