Checking the wiring and component

Check the signal cable between control module terminal #10 and system relay terminal #2. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for an open-circuit according to Open-circuit, permanent faults .

HINT: With the ignition on and the system relay disconnected, the voltage between system relay terminal #1 and ground should be approximately 12 V. 

Try a new system relay if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information 

• To connect the breakout box and access the control module, see Connecting the breakout box. EMS 2000
• To access or replace the system relay, see Engine compartment
• For information about signals see Signal specification .

Fig 2: Identifying System Relay Control Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification