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2000 V70 Ambient Temp

posted by  Robert S. on  Sun Aug 4 08:07 CST 2024
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last visit: Sun Sep 21 05:48 CST 2014
[RELATED]

2000 V70 SE B5244S non-turbo Denso AW-55 304K miles

Yesterday the ambient temperature digital readout no longer displays the outside air temperature. Instead, on the dashboard DIM it now reads " - - - - ". All of the other DIM selections work OK.

Haven't investigated yet, but I know the ambient temp sensor is mounted in/behind the front valance (can't remember whether it's driver or passenger side).

Any ideas? Because of the sudden hard failure, I'm thinking the sensor fell out of its mount and/or wires are broken. Car was recently serviced with a timing belt and water pump change, and I know some of the front parts were removed for the service; e.g., the lower air guide.

Also, anyone know a part number for the ambient air sensor, 2000 V70? Later V70s have the sensor mounted around rear view mirrors. On 98-00 V70s, the sensor is behind the front valance.







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    2000 V70 Ambient Temp

    posted by  Robert S. on  Sun Aug 4 14:22 CST 2024
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    last visit: Sun Sep 21 05:48 CST 2014
    [RELATED]

    To add after further inspection and researching parts availability.

    The sensor is located in lower valance area, passenger (RH) side.

    Volvo p/n: 9125603

    So far, Volvo parts houses I have accessed list the item as: discontinued / out of stock.

    So, going to have to find Used if possible. Or, a reproduction part or suitable cross-referenced replacement.

    Did some troubleshooting: 5V across harness plug pins with ignition switch on/engine not running. No (zero) continuity across the two pins of the unplugged sensor. I guess that means the sensor is No Good.







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      2000 V70 Ambient Temp

      posted by  Robert S. on  Fri Aug 16 08:54 CST 2024
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      last visit: Sun Sep 21 05:48 CST 2014
      [RELATED]

      Follow up:

      Acquired a new ambient temp sensor and installed it. Still not working for ambient temp reading, and shows "- - - -" TEMP readout at the DIM.

      5V is measured at the harness plug, which I read as correct.

      Other thoughts: Could the problem be in the dash-mounted selector switch? I don't know offhand where to find that switch, but I'll research it.






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