Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the wiring




- Ignition on.
Read off the diagnostic trouble codes (DTCs).
Check which of the following diagnostic trouble codes (DTCs) are stored:
- SRS-0108
- SRS-010E
- SRS-0114
- SRS-011A
- SRS-0120
- SRS-0126
- SRS-012C
- SRS-0132
- SRS-0138
- SRS-013E.
Make a note of all the diagnostic trouble codes (DTCs) affected.






Continue - Checking wiring and connectors

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Checking wiring and connectors

Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected, non-deployed, pyrotechnical airbag. This could deploy the airbag.

Warning! It is important that the correct connectors are disconnected.








- Ignition off
- Disconnect the battery negative lead
- Disconnect the affected connectors
- Disconnect the control module connector
- Connect the breakout box.
Check the control module connectors visually for damage.
Start by attempting to locate cables which have a short-circuit to each other.
If diagnostic trouble codes (DTCs) SRS-0108 and SRS-010E are read off, disconnect the connectors for the driver's airbag (SRS-0108) and the seat belt tensioner (SRS-010E).
The following readings should be taken for the example above:
- terminals #27 (#2) and #30 (#5)
- terminals #27 (#2) and #29 (#4)
- terminals #28 (#3) and #30 (#5)
- terminals #28 (#3) and #29 (#4).
If there is a short-circuit between the cables, the resistance should be approximately 0 ohms.
Remedy as necessary.

Other information:
- To access and replace the control module see SRS control module Removal and Replacement
- For information about signals, see Signal specification Signal Description. Supplementary Restraint System (SRS)
- To connect the breakout box, see Connecting the breakout box Connecting The Breakout Box
- For the location of the components, see Location of components Locations









Continue - Verification

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Verification




Verification

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




- Ignition off
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead.

Warning! There must not be anyone inside the passenger compartment when the battery is connected.

- Read off diagnostic trouble codes (DTCs).
The fault is no longer present if the status of the diagnostic trouble code (DTC) has changed to intermittent.





Does the status change?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 wiring

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