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Toyota Corolla Repair Manual: Circuit description

The airbag sensor assy center consists of a airbag sensor assy center, safing sensor, drive circuit, diagnosis circuit and ignition control, etc.

It receives signals from the airbag sensor, judges whether or not the srs must be activated, and detects diagnosis system malfunction.

Dtc b1100/31 is recorded when occurrence of a malfunction in the airbag sensor assy center is detected.

Inspection procedure

Inspection procedure

Hint

: when a malfunction code other than code b1100/31 is displayed at the same time, first repair the malfunction indicated by the malfunction code other than code b1100/31.

Airbag sensor assy malfunction
Dtc b1100/31 airbag sensor assy malfunction ...

Inspection procedure
1 Check voltage at ig2 of airbag sensor assy center Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connector of the air ...

Other materials:

Inspection procedure
1 Check d squib circuit(airbag sensor assy center horn button assy) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the horn button assy and the airbag sensor assy center.  for the black co ...

Sound quality is bad only when cd is played(volume is too low)
Inspection procedure 1 Replace cd with another and recheck Replace the cd with another and recheck.  Check the installation condition of the radio receiver assembly. Standard: malfunction disappear. Check and replace radio receiver assy ...

Inspection procedure
Hint: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the ...

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