Test readings, 10-pin telephone connector connections
|
Test readings, 10-pin telephone connector connections
|
Pin no.
|
Cable colour
|
Component/
Function
|
In/Out
|
Test conditions
|
Across
|
Test reading
|
See
|
1
|
RD
|
Power supply +30
|
-
|
Not connected.
|
1-4
|
B+
|
|
2
|
BU/RD
|
Power supply +15. The input is used as a logic signal for some types of mobile phone.
|
-
|
Not connected.
Ignition ON.
|
2-4
|
B+
|
|
3
|
GN
|
Ground, microphone
|
-
|
-
|
-
|
-
|
|
4
|
BK
|
Ground, mobile phone
|
-
|
-
|
-
|
-
|
|
5
|
YE
|
Telephone Mute Control
|
-
|
No telephone call.
|
5-4
|
4-6 V
|
|
|
|
|
|
Telephone call.
|
5-4
|
<2 V
|
|
6
|
|
Not connected
|
-
|
-
|
-
|
-
|
|
7
|
GY/WH
|
Telephone line output, signal
|
-
|
-
|
-
|
-
|
|
8
|
BK
|
Telephone line output, ground
|
-
|
-
|
-
|
-
|
|
9
|
|
Not connected
|
|
|
|
|
|
10
|
BN/GY
|
Microphone (low-level output)
|
-
|
-
|
-
|
-
|
|