Jeep Liberty KJ. Manual — part 1212
MECHANISM-SHIFT
DESCRIPTION
The gear shift mechanism provides six shift positions which are:
•
Park (P)
•
Reverse (R)
•
Neutral (N)
•
Drive (D)
•
Manual second (2)
•
Manual low (1)
OPERATION
MANUAL LOW (1) range provides FIRST gear only. Overrun braking is also provided in this range. MANUAL SEC-
OND (2) range provides FIRST and SECOND gear only.
DRIVE range provides FIRST, SECOND, THIRD and OVERDRIVE FOURTH and FIFTH gear ranges. The shift into
OVERDRIVE FOURTH and FIFTH gear range occurs only after the transmission has completed the shift into D
THIRD gear range. No further movement of the shift mechanism is required to complete the 3-4 or 4-5 shifts.
The FOURTH and FIFTH gear upshifts occurs automatically when the overdrive selector switch is in the ON posi-
tion. An upshift to FOURTH and FIFTH gears may not occur or may be delayed in some of the possible shift sched-
ules. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/TRANSMISSION CONTROL MODULE -
OPERATION)
REMOVAL
1. Remove any necessary console parts for access to shift lever assembly and shifter cables. (Refer to 23 - BODY/
INTERIOR/FLOOR CONSOLE - REMOVAL)
2. Shift transmission into PARK.
3. Disconnect the transmission shift cable at shift lever and shifter assembly bracket.
4. Disconnect the park-interlock cable from the shifter
lever and the shifter assembly bracket.
5. Disengage all wiring connectors from the shifter
assembly.
6. Remove all nuts holding the shifter assembly to the
floor pan.
7. Remove the shifter assembly from the vehicle.
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INSTALLATION
1. Install shifter assembly onto the shifter assembly
studs on the floor pan.
2. Install the nuts to hold the shifter assembly onto
the floor pan. Tighten nuts to 28 N·m (250 in.lbs.).
3. Install wiring harness to the shifter assembly
bracket. Engage any wire connectors removed
from the shifter assembly.
4. Install the park-interlock cable into the shifter
assembly bracket and into the shifter lever.
5. Install the shift cable to the shifter assembly
bracket. Push cable into the bracket until secure.
6. Place the floor shifter lever in park position.
7. Loosen the adjustment screw on the shift cable.
8. Snap the shift cable onto the shift lever pin.
9. Verify that the shift lever is in the PARK position.
10. Tighten the adjustment screw to 7 N·m (65 in.lbs.).
11. Verify correct shifter operation.
12. Verify proper BTSI operation. (Refer to 21 - TRANSMISSION/AUTOMATIC/SHIFT INTERLOCK SYSTEM -
DIAGNOSIS AND TESTING) Adjust the park-interlock cable as necessary. (Refer to 21 - TRANSMISSION/AU-
TOMATIC/SHIFT INTERLOCK CABLE - ADJUSTMENTS)
13. Install any console parts removed for access to shift lever assembly and shift cables. (Refer to 23 - BODY/
INTERIOR/FLOOR CONSOLE - INSTALLATION)
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SWITCH-VALVE-SOLENOID
DESCRIPTION
The Solenoid Switch Valve (SSV) is located in the valve body and controls the direction of the transmission fluid
when the L/R-TCC solenoid is energized.
OPERATION
The Solenoid Switch Valve controls line pressure from the LR-TCC solenoid. In 1st gear, the SSV will be in the
downshifted position, thus directing fluid to the L/R clutch circuit. In 2nd, 3rd, 4th, and 5th gears, the solenoid switch
valve will be in the upshifted position and directs the fluid into the torque converter clutch (TCC) circuit.
When shifting into 1st gear, a special hydraulic sequence is performed to ensure SSV movement into the down-
shifted position. The L/R pressure switch is monitored to confirm SSV movement. If the movement is not confirmed
(the L/R pressure switch does not close), 2nd gear is substituted for 1st. A DTC will be set after three unsuccessful
attempts are made to get into 1st gear in one given key start.
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CONVERTER-TORQUE
DESCRIPTION
The torque converter is a hydraulic device that cou-
ples the engine crankshaft to the transmission. The
torque converter consists of an outer shell with an
internal turbine (1), a stator (2), an overrunning clutch,
an impeller (5), and an electronically applied converter
clutch (6). The converter clutch provides reduced
engine
speed
and
greater
fuel
economy
when
engaged. Clutch engagement also provides reduced
transmission fluid temperatures. The torque converter
hub (3) drives the transmission oil (fluid) pump and
contains an o-ring seal (4) to better control oil flow.
The torque converter is a sealed, welded unit that is
not repairable and is serviced as an assembly.
CAUTION: The torque converter must be replaced
if a transmission failure resulted in large amounts
of metal or fiber contamination in the fluid.
IMPELLER
The impeller is an integral part of the converter housing. The impeller consists of curved blades placed radially
along the inside of the housing on the transmission side of the converter. As the converter housing is rotated by the
engine, so is the impeller, because they are one and the same and are the driving members of the system.
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