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 MANUALSVOLVO2004V70 L5-2.5L TURBO VIN 59 B5254T2REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - ACCESSORIES AND OPTIONAL EQUIPMENTCOMMUNICATIONS CONTROL MODULETESTING AND INSPECTIONPINOUT VALUES AND DIAGNOSTIC PARAMETERSSIGNAL SPECIFICATION
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2
Signal Specification
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2SECTION Signal Specification
Signal specification, audio control module
Connecting the breakout box and checking the ground terminal
Caution! Before starting to measure, the breakout box must be connected and the ground connections must be checked. See Checking the ground terminals Checking Ground Terminal.
Definitions
The audio control module, green connector
Note! The connectors on the adapter cable must have the correct color-coding for the signal table to match.
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
Audio control module (AUM)/External amplifier to loudspeakers, gray connector
Note! The connectors on the adapter cable must have the correct color-coding for the signal table to match.
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
Audio control module (to aerial)
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
Audio control module (cable between the audio module and the amplifier)
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
Audio control module (cable between the audio module and the CD changer/navigation unit)
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
External amplifier
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
10CD changer
Before taking any readings, see Checking the ground terminals Checking Ground Terminal.
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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.