Capacitance Too Low
Capacitance too low. Permanent fault
Checking components and wiring
- Ignition off
- Disconnect the 2-pin connector under the left-hand seat.
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!
Caution! Do not touch the terminal pins in the SRS control module. There is a risk of static discharge. This could damage the SRS control module.
Check the female and male parts of the connector for the SRS control module and the 2-pin connector. The cable terminals must not be damaged or pressed back.
Check the cable between the SRS control module terminal #4A (4) and the 2-pin connector terminal #1 on the left-hand side impact protection (SIPS) bag for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the SRS control module terminal #3A (3) and the 2-pin connector terminal #2 on the left-hand side impact protection (SIPS) bag 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 SRS control module and connector, see Control module SRS (supplemental restraint system), replacing Supplemental Restraint System Module (SRS), Replacing
- To access the connector for the left-hand side impact protection (SIPS) bag, see Airbag module seat (SIPS), replacing Airbag Module Seat (SIPS), Replacing
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS)
- For information about the repair of SRS wiring, see Cable harness SRS system, repair Procedures
- For other values, see Signal specification Signal Specification, Supplemental Restraint System Module (SRS).
Has the fault been remedied?
Yes - Verification
No - Checking the resistance
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Replacing the component
Try replacing the side impact protection (SIPS) bag according to Airbag module seat (SIPS), replacing Airbag Module Seat (SIPS), Replacing.
Continue - Verification
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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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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 - No Fault Found
Attempt New Test - Checking components and wiring
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Checking the resistance
- Ignition off.
Measure the resistance between the 2-pin connector #1 and #2 (against Supplemental Restraint System Module (SRS)).
The resistance shall be approx. 22 kohms.
If the value does not match the likely cause is some internal defect in Supplemental Restraint System Module (SRS) or in its connectors.
Remedy as necessary.
Other information
- Control module SRS (supplemental restraint system), replacing Supplemental Restraint System Module (SRS), Replacing
- Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS)
- Signal specification Signal Specification, Supplemental Restraint System Module (SRS)
Has the fault been remedied?
Yes - Verification
No - Replacing the component
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