Toyota Corolla Repair Manual: Source voltage drop
The srs is equipped with a voltage–increase circuit (dc–dc converter) in the airbag sensor assy center in case the source voltage drops.
When the battery voltage drops, the voltage–increase circuit (dc–dc 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
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:
Headlamp dimmer switch assy
Replacement
1. Remove steering column cover lwr
Remove 3 screws and steering column cover lwr.
2. Remove headlamp dimmer switch assy
Disconnect the connector.
release the claw and pull out the head light dimmer
switch assy.
...
Diagnostic trouble code chart
Terms
Terms
Physical address
Three–digit code (shown in hexadecimal) which is given to each
component comprising
the avc–lan.
Corresponding to the function, individual symbols are specified.
Logical address
Two–digit code (shown in hexadecimal) w ...
Fuel pump shut off system
To minimize the risk of fuel leakage when the engine stalls or when an airbag
inflates upon collision, the fuel pump shut off system stops the supply of fuel
to the engine.
Follow the procedure below to restart the engine after the system is activated.
► Vehicles without a smart key syst ...
