Checking components and wiring

Check the signal cable between control module terminal #B21 and damper motor terminal #1. Check for a short-circuit to ground.

Check the damper motor resistance. The resistance must be 46 Ω. Take readings between the damper motor terminal pins.

Remedy as necessary.

Other information: 

• See Connecting the breakout box .
• See Dashboard environment panel (including climate control module (CCM)), replacing .
• See Damper motor temperature, replacing .
• See Signal specification .
• See Checking wiring and terminals .

Fig 1: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Left Temperature Damper Motor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Equipment