Signal Missing

Signal missing

Checking the power supply for the supplemental restraint system module (SRS)
Check the power supply to the control module by turning the ignition key to ignition position II.
The SRS (supplemental restraint system) indicator lamp in the driver information module (DIM) must light. The lamp must go out after a few seconds.





Does the warning lamp go out?

Yes - Checking communication with the supplemental restraint system module (SRS)

No - Checking the power supply and ground for the supplemental restraint system module (SRS)

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Checking the power supply and ground for the supplemental restraint system module (SRS)
Check that the fuse for the control module is intact.
Check the power supply and ground terminal for the supplemental restraint system module (SRS).

Note! The supplemental restraint system module (SRS) is powered via two power inputs. Check that the control module is powered in all ignition positions according to the instructions below.

Remedy as necessary

Other information
- Checking the supply voltage/ground terminal Component Tests and General Diagnostics
- For information about fuse and terminal numbers, see the relevant Wiring Diagram.
- Checking wiring and terminals Checking Wiring and Terminals

Was a fault detected?

Yes - Checking the function of the supplemental restraint system module (SRS)

No - Signal Missing - General Information

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Checking communication with the supplemental restraint system module (SRS)

Hint: The CAN communication with the control module is probably OK if the control module ID can be read off. In that case the fault is probably intermittent and will then be more difficult to trace.




- Try to communicate with the supplemental restraint system module (SRS) by reading off the control module ID
- Click on the symbol for VCT2000 to begin reading off

Continue - Signal Missing - General Information

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Checking the function of the supplemental restraint system module (SRS)

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reconnect the connectors. Reinstall the components
- Ignition on.
Check the power supply to the control module by turning the ignition key to ignition position II.
The indicator lamp in the driver information module (DIM) must light up. The lamp must go out after a few seconds.

Does the indicator lamp go out?

Yes - Troubleshooting complete

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the power supply for the supplemental restraint system module (SRS)

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