Checking Component And Cables

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Check outside temperature sensor resistance. For resistance values, see Component Resistance Values .

Check cable between control module #7 and outside temperature sensor terminal 1 for a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Remedy as necessary.

Other information:

To access the control module/connect breakout box, see Connecting the Breakout Box .
To access/replace the outside temperature sensor see Replacing Outside Temperature Sensor And Glow Plugs .
With ignition on and outside temperature sensor connector disconnected, the voltage between outside temperature sensor connector terminal 1 (control module side) and ground should be approximately 5 V.
For other values, see Signal Specification Additional Heater 912-D/B .

Fig 1: Identifying 2-Bit Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Data Link Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Verification