Toyota Tacoma manuals

Toyota Corolla Repair Manual: Source voltage drop

The srs is equipped with a voltageincrease circuit (dcdc converter) in the airbag sensor assy center in case the source voltage drops.

When the battery voltage drops, the voltageincrease circuit (dcdc converter) functions to increase the voltage of the srs to normal voltage.

The diagnosis system malfunction display for this circuit is different from other circuits that is when the srs warning light remains lit up and the dtc is a normal code, source voltage drop is indicated.

Malfunction in this circuit is not recorded in the airbag sensor assy center, and the source voltage returns to normal, the srs warning light automatically goes off.

Wiring diagram

Wiring diagram

Inspection procedure

Source voltage drop
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Inspection procedure
1 Prepare for inspection Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  remove the horn button assy .  disconnect the connector of ...

Other materials:

Circuit description
The side airbag sensor assy (rh) circuit consists of the diagnosis circuit and lateral deceleration sensor, etc. It receives signals from the lateral deceleration sensor, judges whether or not the srs must be activated, and detects diagnosis system malfunction. Dtc b1140/32 is recorded wh ...

Inspection procedure
1 Check airbag sensor assy center connector Disconnect negative () terminal cable from the battery, and wait at least for 90 seconds.  check the connection of the airbag sensor assy center connectors. 2 Check air bag sensor assy center Sst 0984318040 Connect the negat ...

If the engine will not start
If the engine will not start even though correct starting procedures are being followed , consider each of the following points: The engine will not start even though the starter motor operates normally. One of the following may be the cause of the problem: ● There may not be sufficient f ...

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