Volkswagen Passat 1995 Official Factory Repair Manual page 1870

Multiport fuel injection and ignition system
Evaluating display group 115
Display group:
115
Display field: 3
Approx. 0.435
V
Approx. 0.440
V
Approx. 1.085
V
Approx. 0.000
V
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Possible malfunction cause
Open circuit in wire 4 between HO2S and Engine
Control Module (ECM)
Open circuit in wire 3 between HO2S and ECM
Short circuit to positive (B+) in wire 4 between
HO2S and ECM
Short circuit to Ground (GND) in wire 4 between
HO2S and ECM
Page 31 of 126
Malfunction elimination
- Check basic voltage
Page 24-32
- Check HO2S wiring
Page 24-33
24-30
12/6/2004