The EGS control unit detects the selector lever position by way of a switch on the transmission. This switch converts the current selector lever position into a code. This selector lever code is transferred via five lines (L1-L5) to the EGS control unit.
| Selector lever position | L1 to L5 (0 = open, 1= U-batt) | 
|---|---|
| P | L1 =1, L2 = 1, L3 = 1, L4 =0, L5=0 | 
| R | L1 =0, L2 = 0, L3 = 1, L4 =1, L5=0 | 
| N | L1 =1, L2 = 1, L3 = 0, L4 =1, L5=0 | 
| D | L1 =0, L2 = 0, L3 = 0, L4 =1, L5=1 | 
| 4 (3) | L1 =1, L2 = 0, L3 = 1, L4 =1, L5=1 | 
| 3 (2) | L1 =0, L2 = 0, L3 = 1, L4 =0, L5=1 | 
| 2 (1) | L1 =1, L2 = 0, L3 = 0, L4 =0, L5=1 | 
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