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 (SWM).

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

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 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 RTI SWITCH .
  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 RTI SWITCH .
  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