Checking resistance values

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Check that the climate control module (CCM) is receiving a correct value from the evaporator temperature sensor by measuring its resistance and comparing with the values in the table.

  Measure the resistance between climate control module (CCM) connector terminals #B1(#1) and #B15 (#15). This value must correspond with the resistance of the evaporator temperature sensor.

  Other information: 

  • To access or replace the control module, see Dashboard environment panel (including climate control module (CCM)), replacing
  • To connect the breakout box, see Connecting the breakout box
  • To access or replace the evaporator temperature sensor, see Temperature sensor, evaporator, replacing
  • For the resistance values, see Component resistance values
  • For other values, see Signal specification
  • See Checking wiring and terminals .
  Fig 2: Electronic Throttle Module (ETM) Connector Terminal Identification

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Ohm Meter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the resistance correct? 

• YES 

  Refer to Checking the wiring 

• NO 

  Refer to Checking the evaporator temperature sensor