8
ALTERNATOR TEST
Select this option to check alternator charging voltages are acceptable
1. Rev engine to 3000RPM, press enter then hold revs for 10 seconds
2. After analysis results are displayed:
1. Max allowable Charging Voltage
2. Min allowable Charging Voltage
3. Average measured Voltage
4. Max measured Voltage
5. Min measured Voltage
If any results are outside the allowable range, the result will flash and the alternator should
be checked
3. With engine still running press Enter to continue
4. Switch on main electrical loads in vehicle then press ‘Enter’
5. Rev engine to 2000RPM, press ‘Enter’ then hold revs for 10 seconds
6. After analysis results are displayed:
1. Max allowable Charging Voltage
2. Min allowable Charging Voltage
3. Average measured Voltage
4. Max measured Voltage
5. Min measured Voltage
If any results are outside the allowable range, the result will flash and the alternator
should be checked
7. Press ‘Enter’ to advance to Diode Ripple test
8. Ensure headlights only are switched on then press ‘Enter’ to start test
9. After analysis results are displayed:
1. Diode ripple within limits
2. Excessive diode ripple, check alternator
1. 2. 4.
5. 6.
8. 9.
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