Page 3865 of 5267

ADJUSTMENTS
ADJUSTMENT - BANDS
FRONT BAND
The front (kickdown) band adjusting screw (2) is
located on the left side of the transmission case above
the manual valve and throttle valve levers.
1. Raise vehicle.
2. Loosen band adjusting screw locknut. Then back
locknut (1) off 3-5 turns. Be sure adjusting screw
turns freely in case. Apply lubricant to screw
threads if necessary.
3. Tighten band adjusting screw to 8 Nꞏm (72 in. lbs.)
torque with an appropriate Torx™ socket.
CAUTION: If Adapter C-3705 is needed to reach
the adjusting screw, tighten the screw to only 5
Nꞏm (47-50 in. lbs.) torque.
4. Back off front band adjusting screw 1-3/4 turns, for
diesel vehicles, or 1-1/2 turns, for V-10 vehicles.
5. Hold adjuster screw in position and tighten locknut to 41 Nꞏm (30 ft. lbs.) torque.
6. Lower vehicle.
REAR BAND
The transmission oil pan must be removed for access
to the rear band adjusting screw (1).
1. Raise vehicle.
2. Remove transmission oil pan and drain fluid.
3. Loosen band adjusting screw locknut 5-6 turns. Be
sure adjusting screw turns freely in lever.
4. Tighten adjusting screw to 8 Nꞏm (72 in. lbs.)
torque.
5. Back off adjusting screw 3 turns.
6. Hold adjusting screw in place and tighten locknut to
34 Nꞏm (25 ft. lbs.) torque.
7. Position new gasket on oil pan and install pan on
transmission. Tighten pan bolts to 17 Nꞏm (13 ft.
lbs.) torque.
8. Lower vehicle and refill transmission with Mopar
ATF +4, Automatic Transmission fluid.
Page 3866 of 5267

SYSTEM-BRAKE TRANSMISSION SHIFT INTERLOCK
DESCRIPTION
The Brake Transmission Shifter Interlock (BTSI), is a
solenoid operated system. It consists of a solenoid
permanently mounted on the gearshift cable.
OPERATION
The system locks the shifter into the PARK position. The interlock system is engaged whenever the ignition switch
is in the LOCK or ACCESSORY position. An additional electrically activated feature will prevent shifting out of the
PARK position unless the brake pedal is depressed approximately one-halfan inch. A magnetic holding device in
line with the park lock cable is energized when the ignition is in the RUN position. When the key is in the RUN
position and the brake pedal is depressed, the shifter is unlocked and willmove into any position. The interlock
system also prevents the ignition switch from being turned to the LOCK or ACCESSORY position, unless the shifter
is fully locked into the PARK position.
DIAGNOSIS AND TESTING - BRAKE TRANSMISSION SHIFT INTERLOCK
1. Verify that the key can only be removed in the PARK position.
2. When the shift lever is in PARK And the shift handle pushbutton is in the “OUT” position, the ignition key cylinder
should rotate freely from OFF to LOCK. When the shifter is in any other gear or neutral position, the ignition key
cylinder should not rotate to the LOCK position.
3. Shifting out of PARK should not be possible when the ignition key cylinder is in the OFF position.
4. Shifting out of PARK should not be possible while applying normal pushbutton force and ignition key cylinder is
in the RUN or START positions unless the foot brake pedal is depressed approximately 1/2 inch (12mm).
5. Shifting out of PARK should not be possible when the ignition key cylinderisintheACCESSORYorLOCK
positions.
6. Shifting between any gears, NEUTRAL or into PARK may be done without depressing foot brake pedal with
ignition switch in RUN or START positions.
ADJUSTMENTS - BRAKE TRANSMISSION SHIFT INTERLOCK
Correct cable adjustment is important to proper interlock operation. Thegearshift cable must be correctly adjusted
in order to shift out of PARK.
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ADJUSTMENT PROCEDURE
1. Remove the steering column trim as necessary for
access to the brake transmission shift interlock.
2. Shift the transmission into the PARK position.
3. Pull upward on both the BTSI lock tab (4) and the
gearshift cable lock tab (3).
4. Verify that the shift lever is in the PARK position.
5. Verify positive engagement of the transmission
park lock by attempting to rotate the propeller
shaft. The shaft will not rotate when the park lock is
engaged.
6. Turn ignition switch to LOCK position.Be sure
ignition key cylinder is in the LOCK position.
Cable will not adjust correctly in any other
position.
7. Ensure that the cable is free to self-adjust by push-
ing cable rearward and releasing.
8. Push the gearshift cable lock tab (3) down until it snaps in place.
9. Locate the BTSI alignment hole in the bottom of the BTSI mechanism betweentheBTSIlocktabandtheBTSI
connector.
10. Move the BTSI assembly up or down on the gearshift cable until an appropriate size drill bit can be inserted into
the alignment hole and through the assembly.
11. Push the BTSI lock tab (4) down until it snaps into place and remove the drill bit.
12. Install any steering column trim previously removed.
BTSI FUNCTION CHECK
1. Verify removal of ignition key allowed in PARK position only.
2. When the shift lever is in PARK, the ignition key cylinder should rotate freely from off to lock. When the shifter
is in any other position, the ignition key should not rotate from off to lock.
3. Shifting out of PARK should be possible when the ignition key cylinder isin the off position.
4. Shifting out of PARK should not be possible while applying normal force,and ignition key cylinder is in the run
or start positions, unless the foot brake pedal is depressed approximately1/2inch(12mm).
5. Shifting out of PARK should not be possible when the ignition key cylinder is in the accessory or lock position.
6. Shifting between any gear and NEUTRAL, or PARK, may be done without depressing foot brake with ignition
switch in run or start positions.
7. Engine starts must be possible with shifter lever in PARK or NEUTRAL positions only. Engine starts must not be
possible in any position other than PARK or NEUTRAL.
8. With shifter lever in the:
PARK position - Apply upward force on the shift arm and remove pressure. Enginestartsmustbepossible.
PARK position - Apply downward force on the shift arm and remove pressure. Engine starts must be possible.
NEUTRAL position - Normal position. Engine starts must be possible.
NEUTRAL position - Engine running and brakes applied, apply upward force on the shift arm. Transmission
shall not be able to shift from neutral to reverse.
Page 3868 of 5267

GOVERNOR-ELECTRONIC
DESCRIPTION
Governor pressure is controlled electronically. Components used for governor pressure control include:
Governor body
Valve body transfer plate
Governor pressuresolenoid valve
Governor pressure sensor
Fluid temperature thermistor
Throttle position sensor (TPS)
Transmission speed sensor
Powertrain control module (PCM)
GOVERNOR PRESSURE SOLENOID VALVE
The solenoid valve (2) is a duty-cycle solenoid which
regulates the governor pressure needed for upshifts
and downshifts. It is an electro-hydraulic device
located in the governor body on the valve body trans-
fer plate.
GOVERNOR BODY, TRANSFER PLATE, AND PRESSURE SENSOR
The governor pressure sensor (2) measures output
pressure of the governor pressure solenoid valve.
The transfer plate is designed to supply transmission
line pressure to the governor pressure solenoid valve
and to return governor pressure.
The governor pressure solenoid valve is mounted in
the governor body (1). The body is bolted to the lower
side of the transfer plate.
GOVERNOR PRESSURE CURVES
There are four governor pressure curves programmed into the transmissioncontrol module. The different curves
allow the control module to adjust governor pressure for varying conditions. One curve is used for operation when
fluid temperature is at, or below, –1°C (30°F). A second curve is used when fluid temperature is at, or above, 10°C
(50°F) during normal city or highway driving. A third curve is used during wide-open throttle operation. The fourth
curve is used when driving with the transfer case in low range.
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OPERATION
Compensation is required for performance variations of two of the input devices. Though the slope of the transfer
functions is tightly controlled, offset may vary due to various environmental factors or manufacturing tolerances.
The pressure transducer is affected by barometric pressure as well as temperature. Calibration of the zero pressure
offset is required to compensate for shifting output due to these factors.
Normal calibration will be performed when sump temperature is above 50 degrees F, or in the absence of sump
temperature data, after the first 10 minutes of vehicle operation. Calibration of the pressure transducer offset occurs
each time the output shaft speed falls below 200 RPM. Calibration shall be repeated each 3 seconds the output
shaft speed is below 200 RPM. A 0.5 second pulse of 95% duty cycle is applied to the governor pressure solenoid
valve and the transducer output is read during this pulse. Averaging of thetransducer signal isnecessary to reject
electrical noise.
Under cold conditions (below 50 degrees F sump), the governor pressure solenoid valve response may be too slow
to guarantee 0 psi during the 0.5 second calibration pulse. Calibration pulses are continued during this period, how-
ever the transducer output valves are discarded. Transducer offset must be read at key-on, under conditions which
promote a stable reading. This value is retained and becomes the offset during the
coldperiod of operation.
GOVERNOR PRESSURE SOLENOID VALVE
The inlet side of the solenoid valve is exposed to normal transmission linepressure. The outlet side of the valve
leads to the valve body governor circuit.
The solenoid valve regulates line pressure to produce governor pressure.Theaveragecurrentsuppliedtothesole-
noid controls governor pressure. One amp current produces zero kPa/psi governor pressure. Zero amps sets the
maximum governor pressure.
The powertrain control module (PCM) turns on the trans control relay whichsupplies electrical power to the solenoid
valve. Operating voltage is 12 volts (DC). The PCM controls the ground sideof the solenoid using the governor
pressure solenoidcontrol circuit.
GOVERNOR PRESSURE SENSOR
The sensor output signal provides the necessary feedback to the PCM. This feedback is needed to adequately
control governor pressure.
GOVERNOR BODY AND TRANSFER PLATE
The transfer plate channels line pressure to the solenoid valve through the governor body. It also channels governor
pressure from the solenoid valve to the governor circuit. It is the solenoid valve that develops the necessary gov-
ernor pressure.
GOVERNOR PRESSURE CURVES
LOW TRANSMISSION FLUID TEMPERATURE
When the transmission fluid is cold the conventional governor can delay shifts, resulting in higher than normal shift
speeds and harsh shifts. The electronically controlled low temperature governor pressure curve is higher than nor-
mal to make the transmission shift at normal speeds and sooner. The PCM usesa temperature sensor in the trans-
mission oil sump to determine when low temperature governor pressure is needed.
NORMAL OPERATION
Normal operation is refined through the increased computing power of the PCM and through access to data on
engine operating conditions provided by the PCM that were not available with the previous stand-alone electronic
module. This facilitated the development of a load adaptive shift strategy - the ability to alter the shift schedule in
response to vehicle load condition. One manifestation of this capabilityis grade
huntingprevention - the ability of
the transmission logic to delay an upshift on a grade if the engine does not have sufficient power to maintain speed
in the higher gear. The 3-2 downshift and the potential for hunting betweengears occurs with a heavily loaded
vehicle or on steep grades. When hunting occurs, it is very objectionable because shifts are frequent and accom-
panied by large changes in noise and acceleration.
Page 3870 of 5267

WIDE OPEN THROTTLE OPERATION
In wide-open throttle (WOT) mode, adaptive memory in the PCM assures that up-shifts occur at the preprogrammed
optimum speed. WOT operation is determined from the throttle position sensor, which is also a part of the emission
control system. The initial setting for the WOT upshift is below the optimum engine speed. As WOT shifts are
repeated, the PCM learns the time required to complete the shifts by comparing the engine speed when the shifts
occur to the optimum speed. After each shift, the PCM adjusts the shift point until the optimum speed is reached.
The PCM also considers vehicle loading, grade and engine performance changes due to high altitude in determining
when to make WOT shifts. It does this by measuring vehicle and engine acceleration and then factoring in the shift
time.
TRANSFER CASE LOW RANGE OPERATION
On four-wheel drive vehicles operating in low range, the engine can accelerate to its peak more rapidly than in
Normal range, resulting in delayed shifts and undesirable engine
flare.The low range governor pressure curve is
also higher than normal to initiate upshifts sooner. The PCM compares electronic vehicle speed signal used by the
speedometer to the transmission output shaft speed signal to determine when the transfer case is in low range.
REMOVAL
1. Hoist and support vehicle on safety stands.
2. Remove transmission fluid pan and filter.
3. Disengage wire connectors from pressure sensor
(1) and solenoid (2).
4. Remove screws holding pressure solenoid retainer
(1) to governor body (2).
5. Separate solenoid retainer from governor.
Page 3871 of 5267
6. Pull solenoid (1) from governor body (3).
7. Pull pressure sensor from governor body.
8. Remove bolts holding governor body to valve body.
9. Separate governor body (1) from valve body.
10. Remove governor body gasket.
INSTALLATION
Before installing the pressure sensor and solenoid in
the governor body, replace o-ring seals, clean the gas-
ket surfaces and replace gasket.
1. Place gasket (2) in position on back of governor
body (1).
2. Place governor body in position on valve body.
3. Install bolts to hold governor body to valve body.
Page 3872 of 5267
4. Lubricate o-ring on pressure sensor with transmis-
sion fluid.
5. Align pressure sensor to bore in governor body.
6. Push pressure sensor into governor body.
7. Lubricate o-ring (2), on pressure solenoid (1), with
transmission fluid.
8. Align pressure solenoid (1) to bore in governor
body (3).
9. Push solenoid into governor body.
10. Place solenoid retainer (1) in position on governor
(2).
11. Install screws to hold pressure solenoid retainer to
governor body.
12. Engage wire connectors into pressure sensor (1)
and solenoid (2).
13. Install transmission fluid pan and (new) filter.
14. Lower vehicle and road test to verify repair.