S0607080K
Page 35
Transmission and Torque Converter
(ZF 4WG-310)
With the auto selector switch (Figure 32) is in
the "O" (MANUAL) and the forward second gear
is selected, if either downshift switch (Figure 30)
is activated, a pulse is sent to the "22"
transmission controller. This signal energizes
solenoid valves, (Y3 and Y5), which shifts the
transmission to the forward first gear. When
either switch (Figure 30) is selected a second
time, the transmission pulse signal of the "22"
terminal is interrupted and solenoid valve, Y5
and Y6, are energized and the transmission
returns to the forward second gear.
Reference
Number
Description
1 Transmission Controller
2 Transmission Selector Switch
3 Transmission Control Valve
4 Fuse Box
5 Auto Selector Switch
6 Transmission Cutoff Selector
Switch
7 Transmission Cutoff Pressure
Switch
8 Display
9 Downshift Switch
10 Safety Start Switch
11 Output Speed Sensor
12 Speed Pick-up
13 LIS Select Switch
14 LIS Solenoid
15 Speedometer
16 Parking Brake Switch
Reference
Number
Description
A
O
I
HLB20072L
Figure 32
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