Checking the Wires

Check the wire between central electronic module (CEM) 4D and steering wheel module (SWM) 21 (3/130).

Trouble-shoot for an intermittent short circuit to voltage supply as described in Short-Circuit To Supply Voltage, Intermittent Faults and for an open circuit as described in Open-Circuit, Intermittent Faults .

Do the necessary corrective action.

Additional information 

• To connect the test box, see Connecting the Breakout Box .
• For information on signals, see Signal Specification .

Fig 1: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.