Workshop

HYDRA – MATIC 4L40 – E / 5L40 – E

C
A
B
P
N
+
CIRCUIT
C P P/NA
1
1
1
1
1 1
1
1 1
1
1
1
1
1
1
1
1
0
0
0 0 0 0
0
0 0
0
0
00
0
0
0
0 0
B
RANGE
SELECTED
Park
Reverse
Overdrive
Manual 4
Manual 3
Manual 2
1 = Switch Closed
0 = Switch Open
Neutral
Internal Mode
Switch
Figure 9
P
R
N D
4
3
2
C
A
B
P
P/N
Power In
INTERNAL MODE SWITCH
The Internal Mode Switch supplies the Transmission Control Module or Powertrain Control Module
with input regarding the selector lever position (P, R, N, D, 4, 3, 2). The selector position is indicated by
the state of five different On/Off switches, as shown below. The mode switch is located inside the
transmission, on the manual shaft and is fixed in rotation to the main case by the dentent lever spring and
no adjustment is ever necessary.
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
11
Copyright © 2002 ATSG

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