Checking the signal cable

Check the signal cables between central electronic module (CEM) terminal #14B and engine control module (ECM) terminal #45B. Check for an open-circuit.

Also check connector 54/3. Check for contact resistance and oxidation.

Remedy as necessary.

Other information: 

• To access or replace the central electronic module (CEM) connector, see Central electronic module (CEM), replacing
• To access or replace the engine control module (ECM) connector, see Engine control module (ECM), replacing
• To connect the breakout box, see Connecting the breakout box
• For information about signals, see Signal specification
• See Checking wiring and terminals .

Fig 2: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification