Checking components and wiring

Ignition off.

Ignition on.

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

If the cruise control switch is functioning the fault is outside the steering wheel module.

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the cruise control switch working? 

• YES 

  FAULT NOT FOUND:  Troubleshooting has been completed.

• NO 

  Refer to Car Equipment 

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect the RTI switch
• Ignition on.

  Activate and read off the status of the buttons in the audio/car phone switch.

  If the readings give a correct result, the fault is in the RTI switch.

  Other information: 

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was the audio/car phone switch status OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking components and wiring 

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect the audio/car phone switch by disconnecting the lower connector on the audio/car phone 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 audio/car phone switch.

  Other information: 

  • To access the audio/car phone 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 

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect the audio/car phone 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/car phone 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. Voltage should be approximately 12 V.

Check the voltage between terminals #B2 and #B3. Voltage should be approximately 5 V.

Check the voltage between terminal #B3 and the battery negative terminal. Voltage should be approximately 0 V.

If the above 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.