TRRS

Transmision range selctor (TRRS)

Pinout

The transmission selector has a 10 pin connector. The pinout of that connector is as follows:

Pin	Purpose
1	+12V input
2	W/S selector button output
3	Ground
4	TRRS A
5	TRRS B
6
7	Unknown - Goes to relay box
8
9	TRRS C
10	TRRS D

Logic lines

In the above table, there were 4 pins labelled TRRS. These 4 pins will output either a high or low voltage depending on the shift levers position. The following truth table shows which lines are at a high voltage 1, or a low voltage 0 depending on the shifter position. A high voltage is ~10V, where a low voltage is 0V.

Selector position	TRRS A	TRRS B	TRRS C	TRRS D
P	1	1	1	0
R	0	1	1	1
N	1	0	1	1
D	0	0	1	0
4	0	0	0	1
3	0	1	0	0
2	1	0	0	0
1	1	1	0	1