Checking cable Volvo V40 I facelift

Checking cable

Measure the voltage between #F1 and #F2 on the amplifier. Voltage should be approximately 12 V.

Other information

1. To access the amplifier, see «Power amplifier»(ref-461572-S07078375622012040200000) .
2. To connect the breakout box, see «Connecting the breakout box, Audio control module»(ref-461572-S12389906152012040200000) .
3. For information about signals and connectors, see «External amplifier»(ref-461572-S02425721592012040200000) .

Scheme 107

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking component»(ref-461572-S24827654012012040200000)

HINT: Connect the two green connectors together between the loudspeakers and the amplifier.

Check the cable between the head unit/audio module #B1 and front left loud speaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B2 and front left loud speaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B5 and front right loud speaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B6 and front right loud speaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B7 and rear left loud speaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B8 and rear left loud speaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B11 and rear right loud speaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #B12 and rear right loud speaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. For information about programming and accessing/replacing the head unit/audio control module , see: «Radio cassette player, replacing»(ref-461572-S33732607802012040200000) (-2004) or «Audio unit, replacing»(ref-461572-S16371727802012040200000) (2005-).
2. To connect the breakout box, see «Connecting the breakout box, Audio control module»(ref-461572-S12389906152012040200000) .
3. For information about signals and connectors, see «Audio control module (AUM)/External amplifier to loudspeakers, gray connector»(ref-461572-S13231558042012040200000) .

Check the cable between the head unit/audio module #D1 and the amplifier #1 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #D2 and the amplifier #2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #D3 and the amplifier #3 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #D4 and the amplifier #4 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #D5 and the amplifier #5 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between the head unit/audio module #D6 and the amplifier #6 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. To access the amplifier, see «Power amplifier»(ref-461572-S07078375622012040200000) .
2. For information about programming and accessing/replacing the head unit/audio control module , see: «Radio cassette player, replacing»(ref-461572-S33732607802012040200000) (-2004) or «Audio unit, replacing»(ref-461572-S16371727802012040200000) (2005-).
3. To connect the breakout box, see «Connecting the breakout box, Audio control module»(ref-461572-S12389906152012040200000) .
4. For information about signals and connectors, see «Audio control module (cable between the audio module and the amplifier)»(ref-461572-S15587429672012040200000) .

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking cable»(ref-461572-S17435376612012040200000)

Scheme 108

Scheme 109

1. Ignition off.
2. Reinstall connectors, components etc.
3. Ignition on. HINT: This fault-tracing does not apply to audio unit 801. Select "Yes" Separate the gray connectors (behind the head unit/audio unit) on the wiring from the loudspeakers and the loudspeaker wiring from the amplifier. Connect the wiring from the loudspeakers to the head unit/audio unit connector B. Check that the sound is OK from all loudspeakers.

Is the sound OK?

1. YES Refer to «Checking component and cable»(ref-461572-S41251079202012040200000)
2. NO Refer to «Checking cable»(ref-461572-S29896562552012040200000)

HINT: Connect the two green connectors together between the loudspeakers and the amplifier.

Check the cable between amplifier #B1 and front left loudspeaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B2 and front left loudspeaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B5 and front right loudspeaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B6 and front right loudspeaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B7 and rear left loudspeaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B8 and rear left loudspeaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B11 and rear right loudspeaker (+) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Check the cable between amplifier #B12 and rear right loudspeaker (-) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , for a short-circuit to ground according to Short-circuit to ground, permanent faults , and for open-circuits according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. To access the amplifier, see «Power amplifier»(ref-461572-S07078375622012040200000) .
2. To connect the breakout box, see «Connecting the breakout box, Audio control module»(ref-461572-S12389906152012040200000) .
3. For information about signals and connectors, see «Signal specification, audio control module»(ref-461572-S40597669282012040200000) .

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Replacing component»(ref-461572-S03726568692012040200000)