Checking Components And Wiring

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

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

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

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

  Other information: 

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

  Courtesy of VOLVO CARS CORPORATION

Was the audio / carphone 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 CORPORATION

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

  Other information: 

  • To access the audio / carphone switch, see KEYPAD STEERING WHEEL, REPLACING .
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION

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 CORPORATION

• 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 KEYPAD STEERING WHEEL, REPLACING .
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION

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 must be approximately 12 V.

Check the voltage between terminals #B2 and #B3. 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 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 CORPORATION

Fig 2: Identifying Voltage Display

Courtesy of VOLVO CARS CORPORATION