PRE-RELEASE
Test readings, 18-pin telephone connector connections
| Test readings, 18-pin telephone connector connections |
|
Pin no.
|
Component/
function |
In/Out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1
|
Ground, mobile phone
|
-
|
-
|
-
|
-
|
|
|
2
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
3
|
Not connected
|
|
|
|
|
|
|
4
|
Telephone Mute Control
|
-
|
No telephone call.
|
4-1
|
4-6 V
|
|
|
|
|
|
Telephone call.
|
4-1
|
<2 V
|
|
|
5
|
Function, hazard flashers
|
-
|
-
|
-
|
-
|
|
|
6
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
7
|
Telephone line output, ground
|
-
|
-
|
-
|
-
|
|
|
8
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
9
|
Ground, microphone
|
-
|
-
|
-
|
-
|
|
|
10
|
Power supply +15. The input is used as a logic signal for some types of mobile phone.
|
-
|
Connector not connected. Ignition ON.
|
10-1
|
B+
|
|
|
11
|
Power supply (+30 circuit)
|
-
|
Connector not connected.
|
11-1
|
B+
|
|
|
12
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
13
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
14
|
Horn
|
-
|
-
|
-
|
-
|
|
|
15
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
16
|
Telephone line output, signal
|
-
|
-
|
-
|
-
|
|
|
17
|
Not connected
|
-
|
-
|
-
|
-
|
|
|
18
|
Microphone (low-level output)
|
-
|
-
|
-
|
-
|
|
