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O2 Sensor Heater Circuit testing

Discussion in 'Audio & Electronics' started by unicorncomputer, May 31, 2019.

  1. unicorncomputer

    unicorncomputer Member

    Age:
    50
    Posts:
    78
    Likes Received:
    5
    Joined:
    Jan 28, 2016
    Location:
    Southern Vermnt
    Ram Year:
    2004
    Engine:
    Hemi 5.7
    I am looking for the ground location for my Bank 1 sensor 1 O2 Heater control circuit.

    I am getting a P0032 HO2S heater control, Circuit High Bank 1 Sensor 1.

    I have had the sensor replaced with a mopar oem one already.

    I am going to check resistance on Sensor heater circuit tomorrow to verify sensor circuit is good.

    I am hoping to check continuity from harness plug to ECM Pin 18 also.

    There are two heater circuit wires, but only one on ECM, does this mean they merge into one at some point, if not where does the other side go?

    Thank you,

    Steve
     

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