Manufacturer Code Charts: 143500

The voltage supply of circuit 87 has overvoltage.


Possible cause:

- Supply voltage
Affected functions:

- Power generation

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Test 1: Check component Power supply.

1. Check component Power supply.
Power supply Terminal (87)
Test prerequisite

- The actual value is not o.k.
Test sequence

- Check voltage supply at fuses 101, 103 and 105.
- Measure direct voltage with multimeter between ground socket and socket F58f101 (Fuse 101)
- Measure direct voltage with multimeter between ground socket and socket F58f103 (Fuse 103)
- Measure direct voltage with multimeter between ground socket and socket F58f105 (Fuse 105)
- Switch on ignition.
Specified value

- Voltage[11...14] V
Question

- Is the measurement value OK?


YES
The measurement value is OK.Possible cause and remedy

- Inspect fuses, replace if necessary.
- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose contact and corrosion..
- Check ground connection of component N3/9 (CDI control unit) as per circuit diagram.
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Check component F58kD (Engine circuit 87 relay).
- Test wiring from component N3/9 (CDI control unit) to component F58 (Engine compartment fuse and relay box) with an ohmmeter for short circuit (positive or negative) and repair, if necessary.
End of test