Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSVOLVO2009XC70 BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEBLIND SPOT INFORMATION, DOORS, LIDS AND WINDOWS - SYMPTOM RELATED DIAGNOSTIC PROCEDURESCHECKING THE CONTROL BUTTONS (2008-2012)CHECKING THE CONTROL BUTTONSCHECKING THE WIRING

2009 Volvo XC70 Base

Checking The Wiring

2009 Volvo XC70 BaseSECTION Checking The Wiring

Check the cables between control module and relevant control panel. Check for an open-circuit. Check for loose connections. Check for contact resistance. Check for oxidation.

Central locking in front door

Take readings between:

Control module terminal #C2:5 (#35) and central locking button terminal #3.

Control module terminal #C2:21 (#51) and central locking button terminal #2.

Control module terminal #C2:20 (#50) and central locking button terminal #1.

Control panel for power windows in passenger door

Take readings between:

Control module terminal #C1:22 (#22) and control panel terminal #2.

Control module terminal #C1:11 (#11) and control panel terminal #3.

Control module terminal #C1:18 (#18) and control panel terminal #4.

Control panel for power windows in rear doors

Take readings between:

Control module terminal #C1:22 (#22) and control panel terminal #2.

Control module terminal #C1:11 (#11) and control panel terminal #3.

Control module terminal #C1:18 (#18) and control panel terminal #4.

Remedy as necessary.

Other information

Was a fault detected?

YES
Refer to VERIFICATION
NO
Refer to INFORMATION

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.