Signal Missing

Signal missing. Permanent fault

Checking the function of the driver information module (DIM)
Check the power supply for the driver information module (DIM) by switching on the ignition.
Instrument panel illumination should come on.

Does the driver information module (DIM) illumination come on?

Yes - Checking communication with the driver information module (DIM)

No - Checking the power supply and ground for the driver information module (DIM)

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Checking communication with the driver information module (DIM)

Hint: The CAN communication with the control module is probably OK if the control module ID can be read off. In that case the fault is probably intermittent and will then be more difficult to trace.

- Try to communicate with the driver information module (DIM) by reading off the control module ID.
- Click the symbol for VCT2000 to begin reading off.






Continue - Checking the power supply and ground for the driver information module (DIM)

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Checking the power supply and ground for the driver information module (DIM)
For information about fuse and terminal numbers, see the relevant Wiring Diagram.
Check the fuse in the passenger compartment fusebox for supply relay to the Driver information module (DIM).

Note! If the fuse has blown, check the circuit after the fuse before replacing the fuse. Check for a short-circuit to ground. Then replace the fuse. For further information about the circuit after the fuse, refer to the appropriate wiring diagram.

Check the cable between the fusebox and the power supply relay for the driver information module (DIM). Check for an open-circuit.
Check the cable between the power supply relay and the driver information module (DIM). Check for an open-circuit.
Check the ground lead between the driver information module (DIM) and the ground terminal. Check for an open-circuit. Also check the ground terminal. Check for contact resistance and oxidation.
Check the connector and wiring harness behind the dashboard for damage.
Remedy as necessary.

Other information
- Driver information module (DIM), replacing Driver Information Module (DIM), Replacing
- Connecting the Driver Information Module (DIM) test box Connecting the Driver Information Module (DIM) Test Box
- Driver Information Module (DIM) signal description Signal Specification, Driver Information Module (DIM)
- Checking wiring and terminals Checking Wiring And Terminals









Was a fault detected?

Yes - Checking the function of the driver information module (DIM)

No - Fault Found

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Checking the function of the driver information module (DIM)

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

- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check the power supply for the driver information module (DIM) by switching on the ignition.
Instrument panel illumination should come on.
If the above works, start the engine and check that the indicator lamps go out like they are supposed to and that the tachometer reacts to engine speed changes.

Does the combined instrument panel work as it should?

Yes - Fault Found

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the power supply and ground for the driver information module (DIM)

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