Passat Sedan L4-2.0L (ABA) (1996)
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Switch ignition off.
If the specification is not attained:
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Check HO2S wiring
If the specification is attained:
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Replace HO2S 2 -G108- (after three way catalytic converter).
Checking Heated Oxygen Sensor (HO2S) Wiring
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Connect VAG 1598/18 test box to ECM wiring harness.
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Separate 4-pin connector -2- (brown) to HO2S 2 -G108- (after three way catalytic converter).
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Check wiring between test box and 4-pin connector to ECM for open circuit according to wiring diagram.
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Terminal 3 and test box socket 58
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Terminal 4 and test box socket 13
Resistance: maximum 1.5 Ohms
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Additionally, check the wiring to 4-pin connector for short circuit to one another.
Terminal 4 and test box socket 58
Specification: Infinity Ohms
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Check shielding for short circuit to HO2S wiring.
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Terminal 4 and test box socket 56
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Terminal 3 and test box socket 56
Specification: Infinity Ohms