Signal Too Low

Signal too low

Checking the component

Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed roll-over bar cassette. Risk of the roll-over bar cassette deploying.

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 according to:
- Ignition off, wait for 10 seconds.
- Disconnect the connector from the roll-over bar cassette.
Attach a special tool to the connector (to the ignition cable). To carry out this procedure, use: 951 2903 SRS adapter 951 2903 SRS Adapter

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.
Try a new roll-over bar cassette if the diagnostic trouble code (DTC) changes status from a permanent to an intermittent fault Remedy as necessary 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, Supplemental Restraint System Module (SRS)
- For information about the cable routing, see the relevant Wiring Diagram.
- Air bag supplemental restraint system Service and Repair Air bag supplemental restraint system Service and Repair
- Safety cassette (ROPS) Service and Repair
- Checking the special tool: Calibration Calibration
- Disconnecting the connector: 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




- Ignition off, wait for 10 seconds.
- Disconnect the special tool from the connector.
- 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 roll-over bar cassette. Risk of the roll-over bar cassette deploying.

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 connectors for the roll-over bar cassette and the supplemental restraint system module (SRS). Check for damaged pins and terminals.
Remedy as necessary.
Check the ignition cables between the supplemental restraint system module (SRS) and the roll-over bar cassette connector. Check for a short-circuit to ground.
Check the cable between:
- Supplemental restraint system module (SRS) terminal #A49 and connector to right-hand roll-over bar cassette terminal #1.
- Supplemental restraint system module (SRS) terminal #A50 and connector to right-hand roll-over bar cassette 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 information about the cable routing, see the relevant Wiring Diagram.
- Air bag supplemental restraint system Service and Repair Air bag supplemental restraint system Service and Repair
- Safety cassette (ROPS) Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals

Select "Continue" when the fault has been remedied.

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 - Troubleshooting procedure complete

No - 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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking the component

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