Volvo 240 Owner's Manual page 39

Volvo 1990 240 Model
A self-diagnostic system incorporated in the sensor monitors the SRS. If a fault is detected, the "SRS"
warning light will illuminate. the light is included in the warning/indicator light cluster in the instrument
panel. Normally, the SRS warning light will be illuminated along with the other warning/indicator lights
when the ignition key is turned to the ON position (position II), and go out a short time after the engine
has been started. Check that this light is functioning properly every time the car is started.
The following items are monitored by the diagnostic system:
Sensor unit electronics integrity.
Reserve energy supply.
Diagnostic output circuit.
System voltage.
Integrity of system connectors.
Mercury switch closure.
Gas generator ignitor
WARNING! If the SRS warning light stays on after the engine has started or if it comes on while you
are driving, drive the car to the nearest authorized Volvo Dealer for inspection as soon as possible.
ATTENTION! SRS VEHICLE!
THIS CAR IS EQUIPPED WITH A SUPPLEMENTAL RESTRAINT SYSTEM. TO PROVIDE
CONTINUED RELIABILITY, CERTAIN ELEMENTS OF THE SUPPLEMENTAL RESTRAINT
SYSTEM SHALL BE SERVICED OR REPLACED BY 1999. SEE OWNERS MANUAL FOR
FURTHER INFORMATION.
VOLVO
There is no maintenance to perform on the SRS yourself. The only periodic maintenance recommended
on the SRS is that the air bag module and the sensor unit should be replaced every ten years and that the
other components in the system (wiring, connectors, etc.) should also be inspected at this time. This
service must be performed by an authorized Volvo dealer.
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