Jeep Cherokee 2000 Service Manual - page 1139
tension moves the valve downward closing the drain
port.
CONVERTER CLUTCH RELAY VALVE
The converter clutch relay valve (Fig. 22) controls
fluid flow to the converter clutch. The valve is oper-
ated by line pressure from the 1–2 shift valve and is
controlled by solenoid valve number three.
1–2 SHIFT VALVE
The 1–2 shift valve (Fig. 23) controls the 1–2
upshifts and downshifts. The valve is operated by the
No. 2 valve body solenoid and line pressure from the
manual valve, second coast modulator valve and the
2–3 shift valve.
When the transmission control module deactivates
the solenoid, line pressure at the top of the valve
moves the valve down closing the second brake accu-
mulator feed port. As the solenoid is activated and
the drain port opens, spring force moves the valve up
exposing the second brake feed port for the shift to
second gear.
2–3 SHIFT VALVE
The 2–3 shift valve (Fig. 24) controls the 2–3
upshifts and downshifts. The valve is actuated by the
No. 1 valve body solenoid and by line pressure from
the manual valve and primary regulator valve.
Fig. 20 Cut–Back Valve
1 – THROTTLE PRESSURE
2 – CUT-BACK PRESSURE TO THROTTLE VALVE
3 – CUT-BACK VALVE
4 – SECOND BRAKE LINE PRESSURE
Fig. 21 Secondary Regulator Valve
Fig. 22 Converter Clutch Relay Valve
1 – SOLENOID VALVE NO. 3
2 – LINE PRESSURE (FROM 1–2 SHIFT VALVE)
3 – CONVERTER PRESSURE
4 – DRAIN
5 – LINE PRESSURE (FROM PUMP)
6 – CONVERTER CLUTCH RELAY VALVE
7 – TO CONVERTER CLUTCH (DISENGAGED)
8 – TO OIL COOLER
9 – TO CONVERTER CLUTCH (ENGAGED)
XJ
AW–4 AUTOMATIC TRANSMISSION
21 - 231
DESCRIPTION AND OPERATION (Continued)