| All values measured to ground unless otherwise noted | |||
| A59/1 | |||
| A.3 | Main ground to W6 | Approx. 0 Ohms to ground or 12 VDC to circ. 30 | |
| A.4 | Circuit 30 main power input, supplies CTEL system |
12 VDC at all times | |
| A.5 | Circuit 15R power input, supplies CTEL system | Key in steering lock pos. "1,2,3" 12 VDC key in steering lock pos. "0" 0 VDC |
|
| A.13 | Optical bus "Wake-Up" signal input | No reliable test | |
| A.14 A.15 |
Hands free mike signal input low side high side |
No reliable test check with test microphone |
|
| A.19 | HFS speaker output | See pin 25 | |
| A.20 | Shield connection | Note 1 | |
| A.25 | HFS speaker output | 1.5-2.5 Ohms across pins A.19-25 with radio off | Note 1 |
| A.2, 9, 16-17, 22 | Pins not used | ||
| D2B IN D2B OUT |
Optical input port Optical output port |
No reliable test | |
| Note 1 | Shield connection prevents from interference which might cause signal distortion | ||
| Note 2 | Pins "A.1,6-8,11,12,18,21,23,24" only carry system interchanging signals. | No reliable test, check continuity of wiring connection | |