Checking The Wiring And Connectors

Check the cable from the fuse in question to Start control module (SCU) #B7 for open circuit, contact resistance and oxidation. The voltage must be approximately battery voltage.

Check the cable from Start control module (SCU) #B8 to Central electronic module (CEM) #B13 (#13) for open circuit, contact resistance and oxidation. If the voltage is 0 V, it should be possible to remove the key.

Remedy as necessary.

Other information 

• For information about fuses, see the appropriate service information.
• see CHECKING WIRING AND TERMINALS
• see IGNITION LOCK

Fig 1: Identifying Start Control Unit (SCU)

Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to CHECKING START CONTROL MODULE (SCU)