Volkswagen Passat 1995 Official Factory Repair Manual page 1893

Multiport fuel injection and ignition system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU07.24.1
If the specification is attained:
- Check relevance table
of O2S control status, display group 121, display
field 4, 1st position from left.
- Set multimeter to voltage measurement range.
- Connect multimeter with test leads from VW 1594
to measure voltage at ECM connector terminals 1
and 2.
- Measure the voltage supply.
When display = 1: specification is 11.0-14.5 volts
When display = alternately 0 and 1: specification is
fluctuating between 0.0-12.0 volts
If no voltage is present:
- Connect multimeter using test leads from VW 1594
to measure voltage at ECM connector terminal 1
and vehicle Ground (GND).
Specification: 11.0-14.5 volts
If again no voltage is present:
- Check wiring from terminal 1 to relay panel
according to wiring diagram.
Page 54 of 126
Page 24-51 for value
12/6/2004
24-53