Communication Fault

Communication fault

Checking the component








- Ignition off
- Disconnect the connector from the front left front impact sensor.
Check the female and male parts of the connectors for the Supplemental Restraint System Module (SRS) and the front impact sensor. The cable terminals must not be damaged, pressed back or oxidized.
Connect special tool951 2887 UFS test tool 951 2887 UFS Test Tool to the front impact sensor.
Check the resistance between terminal #19B (47) and #18B(46) on the Supplemental Restraint System Module (SRS). The resistance should be 10Kohms.

Hint: If the fault is permanent and no fault is found, replace the front impact sensor.

Remedy as necessary.

Other information:
- To access or replace the front impact sensor, see
- For information about signals, see
- For information about the repair of SRS wiring, see Cable harness SRS system, repair Procedures
- Checking wiring and terminals Checking Wiring And Terminals.





Is the correct resistance value displayed?

Yes - Verification

No - Checking the component

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the component

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Verification




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 diagnostic trouble code (DTC) status is intermittent.





Is the diagnostic trouble code (DTC) intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Checking the component








- Ignition off
- Disconnect the special tool951 2887 UFS test tool 951 2887 UFS Test Tool from the front left front impact sensor.
Check the female and male parts of the connectors for the Supplemental Restraint System Module (SRS) and the front impact sensor. The cable terminals must not be damaged, pressed back or oxidized.
Check the cable between the Supplemental Restraint System Module (SRS) terminal #19B (47) and front impact sensor #2 left front. Check for an open-circuit.
Check the cable between the Supplemental Restraint System Module (SRS) terminal #18B (46) and front impact sensor #1 left front. Check for an open-circuit.
Remedy as necessary.

Other information:
- To access or replace the front impact sensor, see
- For information about signals, see
- For information about the repair of SRS wiring, see Cable harness SRS system, repair Procedures
- Checking wiring and terminals Checking Wiring And Terminals.










Continue - Verification

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