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International Automotive Technicians Network
Re: 1999 Jetta Oxygen Sensor
Posted to Technical Discussion Forum on 2/13/2004

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Here goes: The Red and the Yel/Blk both go to the ECM. The Blue/Yel is the heater circuit +. The Wht goes to the ECM and is the heater -. The Gr/Yel goes to ECM terminal 71, the Blk goes to the ECM an... Login to read more.