Supply voltage
â–¶ How to fix
Check all connections.Check that the cable harness for the supply voltage is connected as per the wiring diagram. Check whether other current consumers are connected to the voltage converter. If this is the case, disconnect the current consumers one after another to determine whether one of them is the cause of the problem. Renew the voltage converter if necessary.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The screen brightness is markedly reduced. The RTI unit switches itself off.
Possible cause
The attempt to start the vehicle engine has taken longer than 40 seconds.There may be an intermittent fault in the supply cable.The voltage converter may be short-circuited.