Toyota Sienna Service Manual: Problem symptoms table
HINT: Proceed to the troubleshooting for each circuit in the table below.
AIRBAG SYSTEM
|
Symptom |
Suspected Area |
| The SRS warning light goes off after the primary check, but then comes on. | SRS Warning Light Remains ON |
| When the ignition switch is turned to the ON position, the SRS warning light sometimes remains on even after approximately 6 seconds. | SRS Warning Light Remains ON |
| The SRS warning light always comes on even when no DTC is output. | SRS Warning Light Remains ON |
| When the ignition switch is turned to the ON position, the SRS warning light does not come on. | SRS Warning Light does not Come ON |
| Although the SRS warning light operates normally, a DTC or a normal system code is not displayed. | Diagnosis Circuit |
| Although terminals TC and CG are not connected, a DTC or normal system code is displayed. | Diagnosis Circuit |
How to proceed with
troubleshooting
HINT:
*: Use the intelligent tester.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
Confirm problem symptoms
3 CHECK MULTIPLEX COMMUNICATION SYSTEM*
Check if the multiplex com ...
Terminals of ECU
1. CENTER AIRBAG SENSOR ASSEMBLY (w/ Side
Airbag)
2. CENTER AIRBAG SENSOR ASSEMBLY (w/o Side
Airbag)
...
Other materials:
Stereo component speaker
COMPONENTS
ON-VEHICLE INSPECTION
1. INSPECT STEREO COMPONENT SPEAKER
HINT:
Remove interior parts so that the stereo component
speaker can be seen.
Check the speaker installation.
OK:
The speaker is securely installed.
If the result is not as specified, reinstall the stereo ...
Short to B+ in Side Squib RH Circuit
DTC B0113/42 Short to B+ in Side Squib RH Circuit
DESCRIPTION
The side squib RH circuit consists of the center airbag sensor assembly and
the front seat side airbag
assembly RH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0113/42 is recorded when a sh ...
Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
oper ...
