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Radio/Navigation system self-diagnosis (RNS)
Display group overview
Break down of display content for display group number 001
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Display group 001
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Read measured value block 1
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⇒
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◂ Indicated on display
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xxx
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xxx
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xxx
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xxx
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1
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2
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3
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4
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◂ Display zone
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Specification
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Evaluation
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S contact on or off (Radio does not switch off)
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S contact on = Display "on".
S contact off = Display "off".
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Dimming of lights in %
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Light off = "0%"
Light on = "20 - 95%", according to position of lighting control for switches and instruments
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Voltage supply in volts
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approx. battery voltage
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Road speed signal from speedometer
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"1" or "0"
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Evaluating display group number 001
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Display zone
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Description
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Display
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Rectifying fault
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Road speed signal from speedometer
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"1" or "0"
The display must always jump back and forth between "1" and "0" when a front wheel is being turned.
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- Visually check wiring
Check correct location and secure fit of connectors in relevant circuit and at the same time observe the display
If the display content does not change during operation, the fault should be eliminated or the affected component renewed
Erase fault memory
Perform functional check
Interrogate fault memory again
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2
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Voltage supply in volts
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Approx. battery voltage
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3
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Dimming of lights in %
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Light off = display "0%"
Light on = infinitely variable brightness control for switches and instruments with switches and instruments lighting control, display = "20 - 95%", according to position of control.
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4
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S contact on or off (Radio does not switch off)
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S contact on = display "on".
S contact off = display "off".
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Break down of display content for display group number 002
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Display group 002
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Read measured value block 2
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⇒
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◂ Indicated on display
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xxx
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xxx
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xxx
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xxx
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1
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2
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3
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4
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◂ Display zones
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Specification
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Evaluation
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OK, short or open circuit
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"OK"
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=> page 01-143
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Loudspeakers rear
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"Lsp. rear"
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OK, short or open circuit
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"OK"
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Loudspeakers front
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"Lsp. front"
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Evaluating display group number 002
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Display zone
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Description
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Display
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Rectifying fault
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1
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Loudspeakers front
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Lsp. front
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- Visually check wiring
Check correct location and secure fit of connectors in relevant circuit and at the same time observe the display
If the display content does not change during operation, the fault should be eliminated or the affected component renewed
Perform functional check
Interrogate fault memory again
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2
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OK, short or open circuit
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OK, short circ., open circ.
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3
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Loudspeakers rear
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Lsp. rear
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4
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OK, short or open circuit
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OK, short circ., open circ.
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Break down of display content for display group number 003
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Display group 003
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Read measured value block 3
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⇒
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◂ Indicated on display
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xxx
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xxx
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xxx
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xxx
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1
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2
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3
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4
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◂ Display zones
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Specification
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Evaluation
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Empty1)
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OK, short or open circuit
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"OK"
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=> page 01-145
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Aerial
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"Aerial"
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Passive or active
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"Active"
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1)
Empty means in this case: Display zone is blank
Evaluating display group number 003
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Display zone
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Description
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Display
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Rectifying fault
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1
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Passive operating aerial or active aerial with integrated amplifier
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"Passive" or
"active" aerial
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- Visually check wiring
Check correct location and secure fit of connectors in relevant circuit and at the same time observe the display
If the display content does not change during operation, the fault should be eliminated or the affected component renewed
Perform functional check
Interrogate fault memory again
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2
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Aerial
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"Aerial"
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3
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OK, short or open circuit
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OK, short circ., open circ.
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4
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None
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Empty1)
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1)
Empty means in this case: Display zone is blank
Break down of display content for display group number 004
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Display group 004
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Read measured value block 4
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⇒
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◂ Indicated on display
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xxx
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xxx
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xxx
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xxx
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1
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2
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3
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4
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◂ Display zones
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Specification
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Evaluation
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Status telephone mute
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"on" or "off"
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Telephone
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"Telephone"
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=> page 01-147
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Empty1)
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Status control output of active amplifier (DSP)
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"0"
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1)
Empty means in this case: Display zone is blank
Evaluating display group number 004
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Display zone
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Description
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Display
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Rectifying fault
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1
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Status control output of active amplifier (DSP)
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If control output OK = display "0"
If control output not OK = display "1"
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- Visually check wiring
Check correct location and secure fit of connectors in relevant circuit and at the same time observe the display
If the display content does not change during operation, the fault should be eliminated or the affected component renewed
Perform functional check
Interrogate fault memory again
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2
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None
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Empty1)
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3
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Telephone
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"Telephone"
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4
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Status telephone mute mode (pin 2 of multi-pin connector III)
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If output active = display "on".
If output inactive = display "off".
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1)
Empty means in this case: Display zone is blank
Break down of display content for display group number 005
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Display group 005
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Read measured value block 5
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⇒
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◂ Indicated on display
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xxx
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xxx
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xxx
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xxx
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1
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2
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3
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4
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◂ Display zones
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Specification
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Evaluation
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Empty1)
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Empty1)
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=> page 01-149
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OK or not OK
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"OK"
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Communication to CD changer/CD player
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"CD connect"
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1)
Empty means in this case: Display zone is blank
Evaluating display group number 005
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Display zone
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Description
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Display
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Rectifying fault
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1
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Communication to CD-changer/CD player (even if no CD-changer is coded)
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"CD connect"
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- Visually check wiring
Check correct location and secure fit of connectors in relevant circuit and at the same time observe the display
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2
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Communication to CD changer OK or not OK.
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"OK"
if a CD changer is connected.
"not OK"
if a CD changer is connected, the display "not OK" is incorrect => Rectifying fault.
"not OK"
if no CD changer is connected, the display "not OK" is correct.
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- If the display content does not change during operation, the fault should be eliminated or the affected component renewed
Perform functional check
Interrogate fault memory again
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3
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None
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Empty1)
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4
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None
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Empty1)
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1)
Empty means in this case: Display zone is blank
If the displayed values in all display zones are OK:
Note:
After completing the function "Read measured value block", interrogate fault memory => Page 01-124
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Ending output
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‒ Press keys 0 and 6. (The function "End output" is selected with 06.)
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