Signal Too Low. Intermittent Fault

Signal too low. Intermittent fault

Checking the wiring




- Ignition off
- Check control module connector C and the potentiometer connector. Check for an intermittent short-circuit to ground. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for contact resistance and oxidation. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Connect an ohmmeter between control module connector C5 and ground.
Check for an intermittent short-circuit to ground. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Connect an ohmmeter between control module connector C6 and ground.
Take the same reading as above.
Connect an ohmmeter between control module connector C7 and ground.
Take the same reading as above.
Connect an ohmmeter between control module connector C5 and potentiometer connector 1.
Connect an ohmmeter between control module connector C6 and potentiometer connector 2.
Check for an intermittent open-circuit. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults
Connect an ohmmeter between control module connector C7 and potentiometer connector 3.
Take the same reading as above.
If no faults are found, try a new potentiometer.
Remedy as necessary.













Other information:
- To connect the breakout box, see Connecting the convertible control unit breakout box Connecting the Breakout Box
- For the comment sheet, see Diagnostic list for convertible tops Diagnostic List For Convertible Tops
- For other values, see Opening and closing the convertible top Opening and Closing the Convertible Top
- To access or replace the potentiometer, see Replacing the potentiometer Replacing the Potentiometer
- To access and replace the control module see Replacing the control module Service and Repair.

Select Continue when the fault has been remedied.

Continue - Calibrating the convertible system

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Calibrating the convertible system
It is important that the potentiometer values are calibrated and programmed into the control module if the potentiometer has been replaced.
Carry out programming and calibration in Volvo Scan Tool (ST).

Select Continue when the fault has been remedied.

Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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FAULT-TRACING FAILED - DONE

Attempt New Test - Checking the wiring

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