Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Note! This diagnostic trouble code (DTC) may have been stored during transportation between the factory and dealership. Check that the transit safety catch in the integrated relay/fusebox in the engine compartment is correctly connected.

Read off diagnostic trouble codes (DTCs).





Does the diagnostic trouble code (DTC) status change?

Yes - FAULT FOUND

No - Checking the cable

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Checking the cable








- Ignition off
- Disconnect the battery negative lead
- Disconnect the SRS and VGLA control modules.
- Connect the battery negative lead.

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

Note! Do not touch the terminal pins in the SRS control module. There is a risk of static discharge which could damage the control module.

Check the connector for the SRS module and the connector for the lock and alarm (VGLA) control module. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the connector for the SRS module #55 (#30) and the connector for the lock and alarm (VGLA) control module #A10. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information
- To access and replace the control module see SRS control module Removal and Replacement
- To access or replace the VGLA control module, see VGLA-control module VGLA-Control Module
- 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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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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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