Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the connector and cable








- Ignition off
- Disconnect the battery negative lead
- Disconnect the seat belt buckle connector
- Disconnect the SRS control module.
- Connect the battery negative lead.

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

Check the seat belt buckle connector. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Measure the resistance between the seat belt buckle connector:
- terminal #1 and chassis ground
- terminal #2 and chassis ground.
Measure between SRS control module:
- terminal #71 (#46) and chassis ground
- terminal #68 (#43) and chassis ground.
check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
The resistance must be infinite.
Remedy as necessary.

Other information
- To access and replace the control module see SRS control module Removal and Replacement
- To access and replace the seat belt buckle, see Seat belt buckle Seat Belt Buckle
- To connect the breakout box, see Connecting the breakout box Connecting The Breakout Box
- For information about signals, see Signal specification Signal Description. Supplementary Restraint System (SRS).









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 connector and cable

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