volvo Workshop Repair Guides

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Page 26
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Checking components and wiring 3

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Ignition off

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Disconnect the audio / carphone wiring by disconnecting the lower connector on the cruise control switch

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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:

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To access the cruise control switch, see RTI switch See: Accessories and Optional Equipment/Sensors and Switches - Accessories and Optional
Equipment/Steering Mounted Controls Assembly/Service and Repair/RTI Switch.

Was the status of the cruise control switch OK?

Yes - Troubleshooting procedure complete

No - Checking components and wiring 4

Relays and Modules > Relays and Modules - Steering and Suspension > Relays and Modules - Steering > Steering Mounted Controls Communication Module > Component Information > Testing and Inspection > Reading and Clearing Diagnostic Trouble Codes > Page 1131

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