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:

Precheck
1. Diagnosis check Starting diagnosis mode (service check mode)  turn off the audio system and turn the ig switch to acc. While pressing the preset switches 1 and 6 at the same time, press cd 3 times. Reference: beep sound is given 3 times and the system enters ...

Cd cannot be taken out
Wiring diagram Inspection procedure 1 Check if radio autosearch functions properly Check if the radio autosearch function properly.  Perform the autoresearch of the radio and check that the operation is normal. Standard: malfunction disappear. 2 Press eject and chec ...

Smart key system
The following operations can be performed simply by carrying the electronic key on your person, for example in your pocket. (The driver should always carry the electronic key.) ● Locks and unlocks the doors ● Opens the trunk ● Starts the engine ■Antenna location 1 A ...

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