SkyTrak 6036 Service Manual - Manual (Page 436)

Electrical System
9.84 Model 6036 Legacy
9.15.6 Transmission Solenoid Valves
The transmission is shifted via six solenoids. Three
solenoids valves (Y1, Y2 and Y3) are contained in an
UPPER spool-type solenoid cartridge assembly (valve
body) (Fig. 9-71, 1).
Figure 9-71 Upper and Lower Transmission
Shift Solenoid Locations
The remaining three solenoid valves (Y4, Y5 and Y6) are
contained in the LOWER spool-type solenoid cartridge
assembly (valve body) (Fig. 9-71, 2). While each 12-volt
solenoid coil at the transmission is the same, the internal
wiring to the solenoids is different and connected so that
the various transmission clutches can be actuated via
input from the transmission shift control switch (travel
select lever).
By placing the transmission shift control switch (travel
select lever) in any given position, a combination of
solenoids are activated, which, in turn, engage a combi-
nation of internal clutches. (Refer to Section 9.15.6, c.
“Travel Select Lever and Wiring Harness Testing” and
Section d, “Upper and Lower Transmission Valve Body
Solenoid Testing.”)
If the transmission is not shifting properly, the
transmission shift control switch (travel select lever),
wiring harness or transmission shift solenoids should be
checked in order to determine which component is
defective. Specific information to determine which travel
position and corresponding component is not responding
can be found by referring to Section 9.8.1, “Transmission,
Forward First Gear Circuit,” and subsequent circuits and
troubleshooting charts. Replace a defective component.
MA7720
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