Operation CHARM: Car repair manuals for everyone.

Signal Too Low. Permanent Fault






Signal too low. Permanent fault

Checking component












- Ignition off.
- Disconnect the solenoid connectors.
- Disconnect the control module.
For S1: Connect an ohmmeter between control module connector 4 and ground and between 5 and ground. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
For S2: Connect an ohmmeter between control module connector 17 and ground and between 21 and ground. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
The ohmmeter should read infinite resistance.













Other information:
- To disconnect / replace the control module, see Replacing the Roll-over Protection System (ROPS) module Service and Repair.
- To disconnect the solenoid connector see Replacing the roll-over bar cassette Removal and Replacement.

Is the value correct?

Yes - Replacing the component

No - Checking for short-circuits to ground

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Replacing the component
Fault-tracing indicates that there is a short-circuit in the cable harness. Replace the cable harness where repairs are not permitted to the affected cables.

Select Continue when the fault has been remedied.

Continue - Verification

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Checking for short-circuits to ground








- Ignition off.
- Connect the connectors for the solenoids.
For S1: Connect an ohmmeter between control module 4 and 5 on the solenoid side.
For S2: Connect an ohmmeter between control module 17 and 21 on the solenoid side.
The ohmmeter should read approximately 4 W.
Is the value correct? Try replacing the present roll-over bar cassette.
Remedy as necessary.













Other information:
- To disconnect / replace the control module, see Replacing the Roll-over Protection System (ROPS) module Service and Repair.
- To replace the rollover bar cassette, see Replacing the roll-over bar cassette Removal and Replacement.

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.








- Ignition off.
- Wait 10 seconds, so that the system is without voltage.
- Reinstall the connectors, components etc.
- Ignition on.
- Read off diagnostic trouble codes (DTCs).
If the DTC status changed to intermittent it means that the fault is no longer present.





Does the status change?

Yes - Verification, continued

No - VERIFICATION FAILED

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Verification, continued




- Ignition off.
- Press the roll-over bars down if they are deployed.
- Ignition on.
Activate the solenoids.

Warning! No personnel should be near the roll-over bars when they are activated.





Were the solenoids activated?

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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking component

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