Short-Circuit to Adjacent SRS Ignition Cable

Short-circuit to adjacent SRS ignition cable

Checking the component








- Switch off the ignition. Wait 10 seconds
- Disconnect the connector from the rear left-hand seat belt tensioner
- Disconnect the connectors from the supplemental restraint system module (SRS).

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

Caution! Do not touch the terminal pins in the supplemental restraint system module (SRS). There is a risk of static discharge. This could damage the supplemental restraint system module (SRS).

Check the SRS ignition cable. Check for a short-circuit to the ignition cable for another collision protection system/ignition stage. With the ignition off and with the relevant ignition cable connector and ignition cable for the adjacent collision protection system/ignition stage disconnected, the resistance reading must display infinite resistance.
Take readings between:
- Terminal #1 for the relevant ignition cable connector and terminal #1 for the ignition cable connector for the adjacent collision protection system/ignition stage
- Terminal #1 for the relevant ignition cable connector and terminal #2 for the ignition cable connector for the adjacent collision protection system/ignition stage
- Terminal #2 for the relevant ignition cable connector and terminal #1 for the ignition cable connector for the adjacent collision protection system/ignition stage
- Terminal #2 for the relevant ignition cable connector and terminal #2 for the ignition cable connector for the adjacent collision protection system/ignition stage.
Remedy as necessary.

Hint:
- Check which collision protection/ignition stage has this fault type
- Start by checking for a short-circuit to the ignition cable for another collision protection system/ignition stage that has the longest shared cable routing with the relevant ignition cable.

Other information
- Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS)
- Signal specification Signal Specification
- For further information about cable routing and terminals, see the wiring diagram
- To replace seat belt tensioners: Seat belt retractor, rear Seat Belt Retractor, Rear
- Disassembling connectors: Igniter wire connector Igniter Wire Connector
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

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Verification




Verification

Hint: After carrying out the repair check that the fault has been remedied.




- Switch off the ignition. Wait 10 seconds
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead. Wait 10 seconds.

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

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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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the component

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