Toyota Sienna Service Manual: Driver Side Seat Belt Warning Light does not Operate
DESCRIPTION
When turning the ignition switch to the ON position, the combination meter assembly communicates with the supplemental restraint system by the multiplex communication system. Unless the driver side seat belt is fastened, the combination meter assembly will turn on the seat belt warning light for driver side. If the driver side seat belt is fastened, then the combination meter assembly will turn off the driver side seat belt warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK MULTIPLEX COMMUNICATION SYSTEM
- Check if the MULTIPLEX communication DTC is output
Result
2 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Enter the following menus: DIAGNOSIS / OBD/MOBD / METER / ACTIVE TEST.
- Check the operation by referring to the value(s) in the table below.
METER:
OK: Warning light condition (ON/OFF) can be switched by "ACTIVE TEST".
3 CHECK DTC
- Check if DTC B0126 is output
Result
REPLACE CENTER AIR BAG SENSOR ASSEMBLY
Engine Coolant Temperature Receiver Gauge Malfunction
DESCRIPTION
The meter CPU receives engine coolant temperature signals from the ECM via
the multiplex
communication lines. The meter CPU displays engine coolant temperature that is
calculated bas ...
Operating Light Control Rheostat does not Change Light Brightness
DESCRIPTION
The meter CPU receives signals for adjusting illumination on the meter from
this circuit. The meter CPU
detects the illumination level selected by the user according to the position of ...
Other materials:
Short to GND in Driver Side Squib 2nd Step Circuit
DTC B1182/19 Short to GND in Driver Side Squib 2nd Step Circuit
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor
assembly, the spiral cable and
the steering pad.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1182/19 ...
Distance Control ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Distance Control ECU
Communication Stop
Mode
Distance control" is not displayed on the
"Communication Bus Check" screen of the
intelligent tester
Applies to "Distance ...
Perform signal check
HINT:
When entering signal check mode, the tire pressure
warning ECU sets all the signal check DTCs first.
After completing signal check for each inspection
item, the DTCs for systems that are determined to be
normal by the tire pressure warning ECU will be
erased.
The DTCs f ...
