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Home >> Volvo >> 1998 >> C70 Convertible L5-2.4L Turbo VIN 56 B5254T >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> SRS Codes (Supplemental Restraint System) >> SRS-243 >> Seat Belt Tensioner. Right Side. Short-Circuit To Ground >> Short-Circuit To Ground

Short-Circuit To Ground






Short-circuit to ground

Checking diagnostic trouble code (DTC) and type of fault

Hint: Before starting to remove components, the Volvo Scan Tool (ST) should be used to check whether the fault is permanent or intermittent.




Clear diagnostic trouble code (DTC).





Continue - Checking diagnostic trouble code (DTC) and type of fault, continuation

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Checking diagnostic trouble code (DTC) and type of fault, continuation
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
Diagnostic trouble code (DTC) SRS-243 cannot be cleared if the fault is permanent.





Can the DTC be erased?

Yes - Diagnostic trouble code (DTC) could be cleared

No - Disconnecting connector from pyrotechnical seat belt tensioner

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Diagnostic trouble code (DTC) could be cleared
The fault is not permanent. The fault could be intermittent. Attempt to provoke the intermittent fault at every step of the fault tracing process by shaking connectors and cabling while taking readings.

Continue - Disconnecting connector from pyrotechnical seat belt tensioner

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Disconnecting connector from pyrotechnical seat belt tensioner




Disconnecting connector from pyrotechnical seat belt tensioner

Disconnecting connector from pyrotechnical seat belt tensioner








- Make a note of radio code if anti-theft coded radio installed.
- Ignition off.
- Disconnect battery negative lead.
- Remove left/right B-pillar in accordance with Seat-belt tensioners, replacement Seat-Belt Tensioners, Replacement.
- Disconnect seat belt tensioner connector.

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





Continue - CONTINUE

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Continue - Verification

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Checking DTCs with the seat belt tensioner replaced by special tool 998 8695












- Connect special tool 998 8695 TEST DEVICE 998 8695 Test Device to SRS ignition cable igniter connector.

Caution! The special tool should be checked and faultless. If the tool is defective it will cause errors in the diagnosis and make fault tracing harder.

- Ignition on.
- Connect battery negative lead.
Clear diagnostic trouble code (DTC).





Continue - Checking DTCs with the seat belt tensioner replaced by special tool 998 8695, continuation

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Checking DTCs with the seat belt tensioner replaced by special tool 998 8695, continuation
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
Diagnostic trouble codes (DTC) SRS 243 can be cleared if the fault is in the disconnected seat belt tensioner.





Can the DTC be erased?

Yes - Connecting connector to pyrotechnical seat belt tensioner

No - Checking to see if the SRS ignition cable is short circuited to ground

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Connecting connector to pyrotechnical seat belt tensioner




Connecting connector to pyrotechnical seat belt tensioner

Connecting connector to pyrotechnical seat belt tensioner












- Ignition off.
- Disconnect battery negative lead.
- Remove special tool 998 8695 TEST DEVICE 998 8695 Test Device.
- Connect connector to seat belt tensioner.

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





Continue - CONTINUE

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CONTINUE - Checking diagnostic trouble code (DTC) with the seat belt tensioner connected

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Checking diagnostic trouble code (DTC) with the seat belt tensioner connected








- Ignition on.
- Connect battery negative lead.
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
Diagnostic trouble code (DTC) SRS-243 should be stored if the fault is in the seat belt tensioner.





Is the diagnostic trouble code (DTC) displayed?

Yes - Replacing component

No - Disconnecting connector from pyrotechnical seat belt tensioner

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Replacing component
The short-circuit is in the seat belt tensioner.
- Replace seat belt tensioner in accordance with Seat-belt tensioners, replacement Seat-Belt Tensioners, Replacement.





Continue - FAULT FOUND

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Disconnecting connector from pyrotechnical seat belt tensioner








- Ignition off.
- Disconnect battery negative lead.
- Remove connector from the seat belt tensioner.

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





Continue - Checking to see if the SRS ignition cable is short circuited to ground

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Checking to see if the SRS ignition cable is short circuited to ground












- Ignition off.
- Disconnect battery negative lead.
- Remove the special tool 998 8695 TEST DEVICE 998 8695 Test Device.
- Remove glove compartment in accordance with Passenger module, replacement Passenger Module, Replacement.
- Remove socket housing B from connector 24/4.
Connect an ohmmeter between a good ground terminal and connecting socket terminals 17 and 18 in socket housing B.




- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the connecting socket terminal 17. The ohmmeter should read infinite resistance.
- Then take an ohmmeter reading against connecting socket terminal 18. The ohmmeter should read infinite resistance.





Are these values OK?

OK - Check to see if there is a short circuit to ground in the SRS ignition cable to the sensor module

Not OK - Replacing component

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Replacing component
If the ohmmeter reads approx. 0 ohms there is a short circuit to ground in the SRS ignition cable between connector 24/4 and the igniter connector.
- Replace SRS cable harness.

Continue - FAULT FOUND

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Check to see if there is a short circuit to ground in the SRS ignition cable to the sensor module




- Ignition off.
- Remove pin housing B from connector 24/4.
Connect an ohmmeter between a good ground terminal and connecting pin terminals 17 and 18 in pin housing B.




- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the connecting pin terminal 17.
- Then take an ohmmeter reading against connecting pin terminal 18.
- The ohmmeter should show 72 kohms at the first reading. At the second reading, approx. 25 kohms with FLUKE or 16 kohms with VIDA.





Are these values OK?

OK - Replacing component

Not OK - Checking to see if the SRS ignition cable is short circuited to ground

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Replacing component
SRS ignition cable between connector 24/4 and sensor module is OK.
- Replace SRS cable harness.

Continue - FAULT FOUND

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Checking to see if the SRS ignition cable is short circuited to ground








- Ignition off.
- Expose and remove the SRS sensor module connector according to: Replacing the SRS sensor module Service and Repair

Caution! Never touch the sensor module pins. There is a risk of static discharge which could damage the sensor module.

Connect an ohmmeter between a good ground terminal and connecting pin terminals 17 and 18 in pin housing B.




- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the connecting pin terminal 17. The ohmmeter should read infinite resistance.
- Then take an ohmmeter reading against connecting pin terminal 18. The ohmmeter should read infinite resistance.





Are these values OK?

OK - Replacing component

Not OK - Replacing component

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Replacing component
SRS ignition cable between connector 24/4 and sensor module is OK.
Replace the sensor unit according to: Replacing the SRS sensor module Service and Repair





Continue - FAULT FOUND

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Replacing component
If the ohmmeter reads approx. 0 ohms there is a short circuit to ground in the SRS ignition cable between connector 24/4 and the sensor module.
Replace SRS cable harness.

Continue - FAULT FOUND

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