23 · Diagnostics

Side crash sensor failure

Fault diagnosisSide crash sensor failure

SIDE CRASH SENSOR FAILURE

When applying this procedure, always consider the following:

Measurements cannot be carried out on the airbag wiring.
Begin testing the system with the vehicle appliances still connected.
The fault must be "Present" or "Present Intermittently" and not "Intermittent". In the event of an Intermittent fault, the Procedure is not applicable. Check the line where the fault was reported carefully.
Not all the simulation sensors are available (e.g. side impact sensors).

The airbag fault warning light is controlled by a dedicated connection to the airbag control unit Instrument Panel Node.

The airbag wiring is a safety component. If faults occur in the wires or connectors, all the wiring must be replaced.

1	CHECK THE LEFT SIDEBAG	All OK	Problems encountered	Operation
	Turn the key to OFF. Because it is not possible to simulate the operatio of the side impact sensor, the sensor must be disconnected and a new one connected in its place Op. 5580C40 SIDEBAG SENSOR (ONE), LH OR RH - R R Turn the key ON and activate communication. Check whether the fault in the left side impact sensor has become Intermittent.	Move on to Step 2	The fault is still present	Turn the key to OFF. Restore the original sensor and replace the rear wiring Clear the errors using the diagnostic tester and proceed to step 3
2	CLEARING ERRORS	All OK	Problems encountered	Operation
	Turn the key to OFF. Clear the errors using the diagnostic tester	Move on to Step 3
3	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the tester does not indicate other faults	End of diagnosis	The diagnostic tester reports other faults	Proceed as instructed in the See table K80 AIRBAG FAILURE WARNING LIGHT ON

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