Signal Too High

Signal too high

Checking the component

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 supplemental restraint system module (SRS). There is a risk of static discharge. This could damage the supplemental restraint system module (SRS).








- Check cables and terminals if the diagnostic trouble code (DTC) is intermittent. Remedy as necessary and select alternative 1 at the bottom
- If the diagnostic trouble code (DTC) is permanent, continue fault-tracing
- Switch off the ignition. Wait 10 seconds
- Disconnect the connector from the front left side impact airbag
- Connect 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 diagnostic trouble codes by clicking the VCT2000 symbol.
If the diagnostic trouble code (DTC) changes status from a permanent to an intermittent fault, replace the front left side impact airbag and select alternative 1 at the bottom.
If the diagnostic trouble code (DTC) is still permanent, select alternative 2 at the bottom.

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 access or replace the supplemental restraint system module (SRS) and the connectors. See: Air bag supplemental restraint system Service and Repair
- To access or replace the front left side impact airbag and the connectors, see: Air bag, front seat Air Bag, Front Seat
- Checking the special tool
- Disassembling connectors: Igniter wire connector Igniter Wire Connector
- Checking wiring and terminals Checking Wiring and Terminals





Select an alternative.

1 - Verification

2 - Checking the component and wiring

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Checking the component and wiring




- Switch off the ignition. Wait 10 seconds
- Disconnect the special tool from the connector
- Disconnect the 20-pin connector located under the left front seat
- 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, pyrotechnical airbag. This could deploy the airbag!

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 20-pin connector and the connectors to the seat belt tensioner and the supplemental restraint system module (SRS). Check for damage to pins and terminals in the connectors.
Remedy as necessary.
Connect the 20-pin connector. Check the SRS ignition cables between the supplemental restraint system module (SRS) and the side impact airbag connector. Check for a short-circuit to supply voltage.
Check the cable between:
- Terminal #A33 on the supplemental restraint system module (SRS) and terminal #1 on the front left side impact airbag connector
- Terminal #A34 on the supplemental restraint system module (SRS) and terminal #2 on the front left side impact airbag connector.
Remedy as necessary.

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 access or replace the supplemental restraint system module (SRS) and the connectors. See: Air bag supplemental restraint system Service and Repair
- To access or replace the front left side impact airbag and the connectors, see: Air bag, front seat Air Bag, Front Seat
- For information about the repair of SRS wiring, see: Wiring harness supplemental restraint system (SRS) Wiring Harness Supplemental Restraint System (SRS)
- 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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