Checking components and wiring

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect the audio/carphone wiring by disconnecting the lower connector on the cruise control switch
• Ignition on.

  Activate the buttons. Read off the status of the buttons in the cruise control switch.

  If the readings give a correct result, the fault is in the wiring between the audio/carphone switch and the cruise control switch.

  Other information: 

  • To access the cruise control switch, see RTI switch .
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was the status of the cruise control switch OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking components and wiring 

• Check the voltage between terminals #B1 and #B3. The voltage must be approximately 12 V
• Check the voltage between terminals #B2 and #B3. The voltage must be approximately 5 V
• Check the voltage between terminal #B3 and the battery negative terminal. Voltage must be approximately 0 V.

  If the readings are OK, the fault is in the cruise control switch.

  Other information: 

  • To connect the breakout box, see Connecting the breakout box .
  Fig 1: Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 2: Identifying Voltage Display

  Courtesy of VOLVO CARS OF NORTH AMERICA.