Toyota RAV4 manuals

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:

VC Output Circuit
DESCRIPTION The ECM constantly uses 5 V from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit. When the VC circuit is short-circuited, the microprocessor in the ECM and sens ...

Inspection
1. INSPECT MASS AIR FLOW METER  Visually check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter. OK: There is no foreign matter. If the result is not as specified, replace the mass air flow meter. Measure the resistance according to the ...

Trouble in Passenger Airbag ON / OFF Indicator
DESCRIPTION The occupant classification system detects the front passenger seat condition. It then informs a passenger of the front passenger airbag, the front seat side airbag RH and front seat belt pretensioner RH condition (activated/not activated) by the passenger airbag ON/OFF indicator. ...

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