2005 JEEP GRAND CHEROKEE clutch

left “D(-)” and hold it there. The transmission will shift to
the range from which the vehicle can best be slowed
down.
Overdrive Operation
The overdrive automatic transmission contains an elec-
tronically controlled fourth and fifth speed (Overdrive).
The transmission will automatically shift from 3rd gear to
Overdrive if the following conditions are present:
•the transmission selector is in D (Drive);
•the engine coolant has reached normal operating tem-
perature;
•vehicle speed is above approximately 30 mph (48
km/h);
•the “TOW/HAUL” button has not been activated;
•transmission has reached normal operating tempera-
ture.NOTE:If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into Overdrive
and will automatically select the most desirable gear for
operation at this temperature. Normal operation will
resume when the transmission fluid temperature has
risen to a suitable level. Refer also to the Note under
torque converter clutch, later in this section.
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desirable
gear for operation at this temperature. If the transmission
temperature becomes hot enough, the “TRANSMISSION
OVER TEMP” message may display and the transmis-
sion may downshift out of Overdrive until the transmis-
sion cools down. After cooldown, the transmission will
resume normal operation.
In high ambient temperatures with sustained high engine
speed and load, an upshift followed shortly thereafter by
236 STARTING AND OPERATING

Torque Converter Clutch
A feature designed to improve fuel economy is included
in all automatic transmissions. A clutch within the torque
converter engages automatically at a calibrated speed at
light throttle. It engages at higher speeds under heavier
acceleration. This may result in a slightly different feeling
or response during normal operation in high gear. When
the vehicle speed drops below a calibrated speed, or
during acceleration, the clutch automatically and
smoothly disengages. The feature is operational in Over-
drive and in Drive.
NOTE:The torque converter clutch will not engage
until the transmission fluid and engine coolant are warm
[usually after 1-3 miles (1.6 - 4.8 km) of driving]. Because
the engine speed is higher when the torque converter
clutch is not engaged, it may seem as if the transmission
is not shifting into Overdrive when cold. This is normal.
Manually shifting between 3 (third gear) and 4 (fourthgear) positions (using the ERS shift control) will demon-
strate that the transmission is able to shift into and out of
Overdrive.
NOTE:If the vehicle has not been driven in several
days, the first few seconds of operation after shifting the
transmission into gear may seem sluggish. This is due to
the fluid partially draining from the torque converter into
the transmission. This condition is normal and will not
cause damage to the transmission. The torque converter
will refill within five seconds of shifting from Park into
any other gear position.
Rocking the Vehicle
If the vehicle becomes stuck in snow, sand, or mud, it can
often be moved by a rocking motion. Move the gear
selector rhythmically between D (Drive) and R (Reverse),
while applying slight pressure to the accelerator.
238 STARTING AND OPERATING

LOW Indicator Lamp” in the instrument cluster will flash
and go out when the shift is complete. Release the
T-handle.
NOTE:If shift conditions/interlocks are not met, or a
transfer case motor temperature protection condition
exists, a “CHECK SHIFT PROCEDURES” message will
flash from the EVIC (Electronic Vehicle Information Cen-
ter). Refer to “Electronic Vehicle Information Center
(EVIC)” in Section 4 of this manual.
NOTE:Shifting into or out of 4WD LOW is possible
with the vehicle completely stopped, however difficulty
may occur due to the mating clutch teeth not being
properly aligned. Several attempts may be required for
clutch teeth alignment and shift completion to occur. The
preferred method is with the vehicle rolling 0 to 3 mph (0
to 5 km/h). If the vehicle is moving faster than 3 mph (5
km/h), the transfer case will not allow the shift.Neutral (N) Shift Procedure
1. Key ON, engine off.
2. Vehicle stopped, with foot on brake.
3. Place transmission in N (Neutral).
4. Hold down N (Neutral) “pin” switch (with a pen, etc.)
for 4 seconds until the LED lamp by the switch starts to
blink indicating shift in progress. Lamp will stop blinking
(stay on solid) when Neutral shift is complete. A “4WD
SYSTEM IN NEUTRAL” message will display on the
EVIC (Electronic Vehicle Information Center). Refer to
“Electronic Vehicle Information Center (EVIC)” in Sec-
tion 4 of this manual.
5. Repeat Steps 1– 4 to shift out of Neutral.
NOTE:If shift conditions/interlocks are not met, a
“CHECK SHIFT PROCEDURES” message will flash from
STARTING AND OPERATING 243
5

Cavity Fuse/Color Description
1 40 Amp Green HVAC Blower
2 30 Amp Pink Power Outlets
3 30 Amp Pink Rr Wiper/Ign R/O
4 30 Amp Pink ABS Pump
5 50 Amp Red Cabin Htr 1 (Diesel Only)
6 50 Amp Red ASD
7 30 Amp Pink Rr HVAC (XK)
8 40 Amp Green Acc Delay/Seats
9 Spare
10 40 Amp Green Starter/JB Power
11 30 Amp Pink Cig Ltr/T-Tow
12 40 Amp Green EBL/Htd Mirror
13 40 Amp Green JB Power
14 50 Amp Red Cabin Htr 2 (Diesel Only)
15 50 Amp Red Cabin Htr 3 (Diesel Only)
16 25 Amp Natural IPM/CoilsCavity Fuse/Color Description
17 Spare
18 20 Amp Yellow TCM/AC Clutch
19 20 Amp Yellow Ign Sw
20 20 Amp Yellow PCM Batt (Gasoline Only)
21 30 Amp Pink ABS Valves
22 Spare
23 20 Amp Yellow FDCM
24 20 Amp Yellow Fuel Pump
25 20 Amp Yellow FDCM/E-Diff.
26 15 Amp Blue Hyd/PCM (Diesel Only)
27 15 Amp Blue Brake/Stop Lamps
28 25 Amp Natural NGC/Injectors
29 Spare
30 Spare
31 Mini Relay Cabin Htr 1 Rly (Diesel
Only)
MAINTAINING YOUR VEHICLE 347
7

Cavity Fuse/Color Description
32 Micro Relay TCM Rly (Gasoline Only)
33 Micro Relay Starter Rly
34 Micro Relay AC Clutch Rly
35 Micro Relay Fuel Pump Rly
36 Mini Relay Cabin Htr 3 Rly (Diesel
Only)
38 Mini Relay Cabin Htr 2 Rly (Diesel
Only)
39 Mini Relay HVAC Blower Rly
40 Mini Relay ASD RlyUnderhood Fuses (Integrated Power Module)
Integrated Power Module
348 MAINTAINING YOUR VEHICLE

Safety............................65,254
Sizes............................... 256
Spare Tire........................... 299
Spinning............................ 266
Tread Wear Indicators................... 267
Wheel Mounting....................... 302
Tongue Weight/Trailer Weight.............. 285
Torque Converter Clutch.................. 238
Tow Hooks, Emergency................... 305
Tow/Haul Indicator Light................. 168
Towing............................283,306
Disabled Vehicle....................... 306
Recreational.......................... 290
Traction Control......................... 121
Traction Control Light..................121,166
Traction Control Switch................... 121
Trailer Towing.......................... 283
Cooling System Tips.................... 287
Tips ................................ 287Trailer and Tongue Weight................ 285
Warnings............................ 284
Wiring.............................. 286
Transfer Case........................... 339
Maintenance.......................... 339
Transmission
Automatic........................233,336
Maintenance.......................... 336
Range Indicator....................... 169
Shifting............................. 233
Transmitter Battery Service.................. 21
Transmitter, Garage Door Opener............ 138
Transmitter, Remote Keyless Entry............ 18
Tread Wear Indicators.................... 267
Turn Signals................... 116,164,353,355
Underhood Fuses.....................346,348
Universal Transmitter..................... 138
Upholstery Care........................ 342
INDEX 407
10