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 .
2. To connect the breakout box, see Connecting the breakout box, Audio control module .
3. For information about signals and connectors, see External amplifier .

Scheme 107

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to Checking component

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 (-2004) or Audio unit, replacing (2005-).
2. To connect the breakout box, see Connecting the breakout box, Audio control module .
3. For information about signals and connectors, see Audio control module (AUM)/External amplifier to loudspeakers, gray connector .

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 .
2. For information about programming and accessing/replacing the head unit/audio control module , see: Radio cassette player, replacing (-2004) or Audio unit, replacing (2005-).
3. To connect the breakout box, see Connecting the breakout box, Audio control module .
4. For information about signals and connectors, see Audio control module (cable between the audio module and the amplifier) .

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to Checking cable

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
2. NO Refer to Checking cable

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 .
2. To connect the breakout box, see Connecting the breakout box, Audio control module .
3. For information about signals and connectors, see Signal specification, audio control module .

Was a fault detected?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to Replacing component