Fault-Tracing Information
Fault-tracing
Select an alternative
- If the diagnostic trouble code (DTC) is permanent: Select alternative 1.
- If the diagnostic trouble code (DTC) is intermittent: Select alternative 2.
Select an alternative.
1 - Checking the component
2 - Checking the wiring and terminals
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Checking the component
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed adaptive seat belt force limiter. The adaptive seat belt force limiter could deploy!
- Ignition off, wait for 15 seconds.
- Disconnect the connector from the front passenger adaptive seat belt force limiter.
- Attach a special tool to the connector (to the ignition cable). To carry out this procedure, use: 951 1506 Test dummy 951 1506 Test Dummy
Note! The special tool must be checked and fault-free. If the special tool is faulty, the diagnostic readings will be incorrect. This will make fault-tracing harder.
- Switch on the ignition. Wait 10 seconds.
Read off the diagnostic trouble codes (DTCs) by clicking on the VCT2000 symbol.
- If the diagnostic trouble code (DTC) is permanent: Select alternative 1.
- If the diagnostic trouble code (DTC) is intermittent: Select alternative 2.
Other information
- Front safety belt retractor Front Safety Belt Retractor
- Checking the special tool:
Select an alternative.
1 - Checking the wiring and terminals
2 - Replacing a component
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Fault-tracing information
Attempt New Test - Select an alternative
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Checking the wiring and terminals
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed adaptive seat belt force limiter. The adaptive seat belt force limiter could deploy!
- Ignition off, wait for 15 seconds.
- Disconnect the connector for Supplemental restraint system module (SRS).
- Disconnect the connector from the front passenger adaptive seat belt force limiter.
Check connectors for damage to pins and connections.
Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation.
Also check the other connectors and terminals that join the cables between the supplemental restraint system module (SRS) and the adaptive seat belt force limiter.
Check the cable for short-circuit to ground.
Take readings between:
- Supplemental restraint system module (SRS) terminal #C1:20(#B20) and the connector for the front adaptive passenger seat belt force limiter terminal #1.
- Supplemental restraint system module (SRS) terminal #C1:19(#B19) and the connector for the front adaptive passenger seat belt force limiter terminal #2.
Remedy as necessary.
Other information
- Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS)
- Signal specification Signal Specification, Supplemental Restraint System Module (SRS)
- For further information, see the wiring diagram.
- Front safety belt retractor Front Safety Belt Retractor
- Wiring harness supplemental restraint system (SRS) Wiring Harness Supplemental Restraint System (SRS)
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Continue - Powering the SRS system
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Replacing a component
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed adaptive seat belt force limiter. The adaptive seat belt force limiter could deploy!
- Ignition off, wait for 15 seconds.
- Replace the front passenger's adaptive seat belt force limiter.
Other information
- Front safety belt retractor Front Safety Belt Retractor
Continue - Powering the SRS system
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Powering the SRS system
Powering the SRS system
Powering the SRS system
Warning! Nobody should be in the passenger compartment when the SRS (supplemental restraint system) is first powered after fault-tracing/repair.
Caution! Ignition off during the entire procedure.
- Reinstall the connectors, components etc.
- If the battery negative lead has been removed: Connect the battery negative lead.
When powering up the SRS-system, other systems and components in the vehicle will also be activated.
Power the SRS (supplemental restraint system) by clicking the VCT2000 symbol.
Performing the service may take up to 15 seconds.
Continue - FAULT FOUND
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FAULT FOUND - Verification
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Verification
Verification
Hint: After carrying out the repair check that the fault has been remedied.
- Reinstall the connectors, components etc.
- Switch on the ignition. Wait 10 seconds.
Read diagnostic trouble codes by clicking the VCT2000 symbol.
If the fault is intermittent, the fault has been remedied.
Is the fault intermittent?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - VERIFIED
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