 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Left/right audio power
amplifier (N40/3)
Voltage supply |
9  |
N40/3
 |
 26 |
Remove radio (A2).
Disconnect connector from Left/right audio power amplifier (N43/3). |
11 - 14 V
|
Fuse F12 in fuse box (F1)
Ground W6 (left wheelhousing in
trunk)
Wiring
Values OK:
1.1 ,
|
| 1.1 |
Control voltage from radio |
9 |
N40/3
|
8 |
Remove radio (A2).
Disconnect connector from Left/right audio power amplifier (N43/3).
Radio (A2): ON |
11 - 14 V |
Wiring
A2
Values OK:
2 ,
|
| 2.0 |
Left/right audio power
amplifier (N40/3)
Speaker signals from radio (A2)
left front:
right front:
left rear:
right rear: |
10
1
3
4 |
N40/3
|
|
Disconnect connector from Left/right audio power amplifier (N43/3).
Radio (A2): ON
Set the audio volume to max. |
>0.2 V
Short surges permitted
|
Wiring,
Radio (A2) |
| 3.0 |
Left front door speaker (H4/5) |
21
9
9 |
|
|
Connector on N40/3 disconnected.
Radio (A2): OFF
|
1.5 - 2.5 
|
Wiring,
H4/5,
Connectors,
Values OK:
N40/3.
|
| 4.0 |
Left front speaker (H4/9) |
1
|
H4/9
|
2
|
Remove H4/9.
Disconnect connector x1 on speaker.
Perform measurement between speaker coil and capacitor (Figure 2).
Radio (A2): OFF |
7.5 - 8.5
|
H4/9.
Values OK:
Wiring,
Radio (A2) |
| 5.0 |
Left rear door
speaker (H4/3) |
15
9
9 |
|
|
Connector on N40/3 disconnected
Radio (A2): OFF |
3.5 - 4.5
|
Wiring,
H4/3,
Values OK:
N40/3.
|
| 6.0 |
Left rear speaker (H4/7) |
12
9
9 |
|
|
Connector on N40/3 unplugged.
Radio (A2): OFF |
1.5 - 2.5
|
Wiring,
H4/7,
Values OK:
N40/3.
|
| 7.0 |
Right front door
speaker (H4/6) |
14
9
9 |
|
|
Connector on N40/3 disconnected.
Radio (A2): OFF |
1.5 - 2.5
|
Wiring,
H4/6,
Values OK:
N40/3.
|
| 8.0 |
Right front speaker (H4/10) |
1
|
H4/10
|
2
|
Remove H4/10.
Disconnect connector x1 on speaker.
Perform measurement between speaker coil and capacitor.
Radio (A2): OFF |
7.5 - 8.5
|
H4/10.
Values OK:
Wiring,
Radio (A2) |
| 9.0 |
Right rear door
speaker (H4/4) |
17
9
9 |
|
|
Connector on N40/3 disconnected.
Radio (A2): OFF |
3.5 - 4.5
|
Wiring,
H4/4,
Values OK:
N40/3.
|
| 10.0 |
Right rear speaker (H4/8) |
11
9
9 |
|
|
Connector on N40/3 disconnected.
Radio (A2): OFF |
1.5 - 2.5
|
Wiring,
H4/8,
Values OK:
N40/3. |
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