Fault-Tracing Information

Checking the cassette player

Fault-tracing information

Hint: Check that the volume is not turned down.

Check other sound sources, to see if the radio works for example.

Do other sound sources work?

Yes - Checking the component

No - Checking the sound

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Checking the sound





Checking the amplifier and loudspeaker wiring

Fault-tracing information
Check that the settings (volume, fade, balance, centre volume or effect volume) are not causing the fault symptom.
Check the sound reproduction from several sources (radio, CD or cassette playing).
Check that all connectors are correctly connected to the audio unit and amplifier.
Check that the loudspeakers are not broken.

Was a fault detected?

Yes - Fault Found

No - Fault-tracing information

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Fault-tracing information
To carry out correct fault-tracing, select one of the following options:
1. No or poor sound generated from the center loud speaker
2. No or poor sound reproduction from one or a number of the car loudspeakers.

Specify an alternative

1 - Checking the component and cable

2 - Fault-tracing information

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Checking the component and cable
Check the cable between the head unit / audio control module terminal #A10 and the center loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the main unit / audio control module terminal #A11 and the center loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- Radio/telephone, changing Removal and Replacement
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Was a fault detected?

Yes - Fault Found

No - No Fault Found

------------------------

Fault-tracing information
To carry out correct fault-tracing, select one of the following options:
1. The car is equipped with an external amplifier
2. The car is not equipped with an external amplifier.

Specify an alternative

1 - Checking the cable

2 - Checking the cable

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Checking the cable
Check fuse 17 in the fusebox in the passenger compartment.
Measure the voltage between terminals #F1 and #F2 on the amplifier. Voltage should be approximately 12 V.

Other information:
- Radio equipment, replacing Radio Equipment, Replacing
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Was a fault detected?

Yes - Fault Found

No - Checking the component

------------------------

Checking the cable

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

Check the cable between the head unit / audio control module terminal #B1 and the left front loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B2 and the left front loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B5 and the right front loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B6 and the right front loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B7 and the left rear loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B8 and the left rear loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B11 and the right rear loudspeaker (+) in the door. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B12 and the right rear loudspeaker (-) in the door. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B11 and the right rear loudspeaker (+) in the parcel shelf. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #B12 and the right rear loudspeaker (-) in the parcel shelf. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- Radio/telephone, changing Removal and Replacement
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Was a fault detected?

Yes - Fault Found

No - No Fault Found

------------------------

Checking the component and cable
Check the cable between the head unit / audio control module terminal #D1 and the amplifier terminal #1. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #D2 and the amplifier terminal #2. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #D3 and the amplifier terminal #3. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #D4 and the amplifier terminal #4. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #D5 and the amplifier terminal #5. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between the head unit / audio control module terminal #D6 and the amplifier terminal #6. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- Radio equipment, replacing Radio Equipment, Replacing
- Radio/telephone, changing Removal and Replacement
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Was a fault detected?

Yes - Fault Found

No - Checking the cable

------------------------

Checking the component








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.

Hint: This fault-tracing does not apply to audio unit 8X1. If the car is equipped with an 8X1, select "Yes" to move to the next fault-tracing.

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?

Yes - Checking the component and cable

No - Checking the cable

------------------------

Checking the cable

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

Check the cable between amplifier terminal #B1 and the left front loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B2 and the left front loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B5 and the right front loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B6 and the right front loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B7 and the left rear loudspeaker (+). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B8 and the left rear loudspeaker (-). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B11 and the right rear loudspeaker (+) in the door. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B12 and the right rear loudspeaker (-) in the door. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B11 and the right rear loudspeaker (+) in the parcel shelf. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between amplifier terminal #B12 and the right rear loudspeaker (-) in the parcel shelf. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- Radio equipment, replacing Radio Equipment, Replacing
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Was a fault detected?

Yes - Fault Found

No - Replacing the component

------------------------

Replacing the component








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Try replacing the amplifier.
Check that the sound is OK from all the loudspeakers.

Other information:
- Radio equipment, replacing Radio Equipment, Replacing

Is the sound OK?

Yes - Fault Found

No - No Fault Found

------------------------

FAULT FOUND - Fault Found

No Fault Found - No Fault Found

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Checking the component
Listen to another cassette.

Is there sound reproduction from the cassette player?

Yes - Fault Found

No - No Fault Found

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