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21 TROUBLESHOOTING
Faults
Turn signal, brake light, and
horn are not functional
Time is not displayed or not
correctly displayed
12 V battery discharged
The combination instrument
shows nothing on the display
Speedometer in combination
instrument not functioning
112
Possible cause
Fuse 4 or 6 blown
Fuse 2 or 7 blown
Ignition was not switched off
when vehicle was parked
The 12-V battery is not being
charged by the alternator
Fuse 2 or 7 blown
Speedometer wiring harness is
damaged or plug-in connector
is oxidized
Action
–
Change the fuses of individual electri-
cal power consumers. (
–
Change the fuses of individual electri-
cal power consumers. (
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the open-circuit current.
–
Change the fuses of individual electri-
cal power consumers. (
–
Check the wiring harness and plug-in
connector.
p. 91)
p. 91)
(
p. 85)
p. 91)
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