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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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Measured value (data) blocks<br />

Página 13 de 86<br />

01-194<br />

Evaluating display group 4, display zone 2 - control module voltage supply<br />

Appears on<br />

display<br />

Less than<br />

specified<br />

Greater than<br />

specified<br />

Possible cause<br />

Alternator faulty, battery charge<br />

state low<br />

Battery heavily loaded shortly after<br />

starting due to high charging current<br />

and accessories<br />

Transfer resistance in current supply<br />

or the Motronic Engine Control<br />

Module (ECM) -J220- Ground (GND)<br />

connection<br />

Current draw when ignition is off<br />

Voltage control on alternator faulty<br />

Excess voltage due to slave starting<br />

or quick charging unit<br />

Corrective action<br />

- Check alternator and<br />

battery voltage, charge<br />

battery:<br />

<strong>Repair</strong> Manual, Electrical<br />

Equipment; <strong>Repair</strong> Group 27<br />

- Increase revs slightly for a<br />

few minutes and switch off<br />

accessories<br />

- Check Motronic Engine<br />

Control Module (ECM) -J220-<br />

voltage supply Page 24-<br />

163<br />

- Eliminate current draw<br />

- Check voltage control,<br />

replace if necessary:<br />

<strong>Repair</strong> Manual, Electrical<br />

Equipment; <strong>Repair</strong> Group 27<br />

- Check DTC memory<br />

Page 01-23 , DTC memory,<br />

checking and erasing<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

12/2/<strong>2005</strong>

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