oil KIA CARNIVAL 2007 Workshop Manual

2007 > 2.7L V6 GASOLINE >
Hydraulic Control System
DESCRIPTION
a.Better and smoother shift quality.
b. In order to prevent ATF leakage from the valve body or each elements, the exhaust ports have been grouped into
only one with an addition of a check ball.
c. If a failure occurs in its electric control, the switch valve and fail safe valve is able to move to enable 3rd speed
drive or reverse.
d. The hydraulic system consists of oil pump, regulator valve, solenoid valves, pressure control valve and valve body.
e. In order to control the optimal line pressure and inprove the efficiency of power transmission according to maximize
the efficiency of the oil pump, VFS(Variable Force Solenoid) valve has been added in the valve body hydralic
circuit.

2007 > 2.7L V6 GASOLINE >
Description
The automatic transmission is a combination of 3 - element 2 - phase 1 - stage torque converter and double shaft
electrocally - controlled unit which provides 4 speeds forward and 1 reverse. To improve the efficiency of power
transmission, the line pressure control was changed applying “Variable Force Solenoid (VFS) valve” on this model.
However, adopting VFS on this model, the line pressure is variably changed according to TPS and the vehicle speed,
this will enable more improved efficiency of power transmission and fuel consumption.
Characteristics
Some of the characteristics include:
▶Different power transfer
▶Different component layout
▶New shift logic(HIVEC) to improve shift feeling
▶Position of Valve Body
▶Variable shift pattern
▶Communication protocol and method
▶Step gate type shift lever.
Item Details
Weight Reduction 1. Aluminum oil pump
a. 2.3kg Approx
2. Pressed parts a. Retainer and hub of brakes and clutches
b. Carrier of planetary gear set
Better shift quality 1. Independent control of clutches and brakes enabled better control of
hydraulic pressure and skiped shifts (4 to 2, 3 to 1)
2. During N to D or N to R shift, feedback control adopted.
3. When starting from Creep condition, reduction of shock.(Creep condition is
controlled with 1st gear)
4. Solenoid valve frequency is increased for more accurate control. 35Hz to
61.3Hz except DCCSV that is 35Hz and VFS that is 600Hz.
5. HIVEC adoption for better shift feeling.
6. Variable shift pattern.
Increase in Power train efficiency 1. Fully Variable Line Pressure
2. VFS(Variable Force Solenoid)
- Manual shifting possible
- Step gate type shift lever

Low&Reverse brakeLRHold LR annulus gear and OD carrier
Second brake 2NDHold reverse sun gear
One way clutch OWCRestrict the rotating direction of low & reverse annulus gear
Operating elements
UD/COD/CREV/C 2ND/B LR/BOWC
P ●
R ●●
N ●
D1 ● ●○
D2 ● ●
D3 ●●
D4 ●●
1) ○ : OWC is operated when shifts from 1st gear to 2nd gear.
2) L&R brake is released in 1st gear when the vehicle speed is more than 5KPH approximately.
Torque converter and shaft
The torque converter consists of an impeller(pump), turbine and stator assembly in a single unit. The pump is
connected to the engine crankshaft and turns as the engine turns. This drawing force is transmitted to the turbine
through the oil which is recycled by the stator.
The transmission has two parallel shafts ; the input shaft and the output shaft. Both shafts are in line with the engine
crankshaft. The input shaft includes the overdrive clutch, reverse clutch, underdrive clutch, one way clutch, 2ND brake,
low&reverse brake, overdrive planetary carrier, output planetary carrier and transfer drive gear. The output shaft
includes the transfer driven gear.
CLUTCHES
The gear changing mechanism utilizes three multi- disc clutches. The retainers of these clutches are fabricated from
high- precision sheet metal for lightness and ease of production. Also, more responsive gearshifts at high engine
speeds are achieved by a pressure- balanced piston mechanism that cancels out centrifugal hydraulic pressure. This
mechanism replaces the conventional ball check valve.
UNDERDRIVE CLUTCH
The underdrive clutch operates in 1st, 2nd, and 3rd gears and transmits driving force from the input shaft to the
underdrive sun gear(A).
The components comprising the under clutch are as illustrated below.

functioning.c.
Malfunction of the TCM(PCM)
Driving impossible Starting impossible
Starting is not possible when the selector
lever is in P or N range. In such cases, the
cause is probably a defective engine system,
torque converter or oil pump. a.
Malfunction of the engine system
b. Malfunction of the torque converter
c. Malfunction of the oil pump
Does not move forward
If the vehicle does not move forward when
the selector lever is shifted from N to D, 3, 2
or L range while the engine is idling, the
cause is probably abnormal line pressure or a
malfunction of the underdrive clutch or valve
body. a.
Abnormal line pressure
b. Malfunction of the underdrive solenoid
valve
c. Malfunction of the underdrive clutch
d. Malfunction of the valve body
Does not reverse
If the vehicle does not reverse when the
selector lever is shifted from N to R range
while the engine is idling, the cause is
probably abnormal pressure in the reverse
clutch or low and reverse brake or a
malfunction of the reverse clutch, low and
reverse brake or valve body. a.
Abnormal reverse clutch pressure
b. Abnormal low and reverse brake pressure
c. Malfunction of the low and reverse brake
solenoid valve
d. Malfunction of the reverse clutch
e. Malfunction of the low and reverse brake
f. Malfunction of the valve body
Does not move (forward or reverse)
If the vehicle does not move forward or
reverse when the selector lever is shifted to
any position while the engine is idling, the
cause is probably abnormal line pressure or a
malfunction of the power train, oil pump or
valve body. a.
Abnormal line pressure
b. Malfunction of power train
c. Malfunction of the oil pump
d. Malfunction of the valve body
Malfunction when
starting Engine stalling when shifting
If the engine stalls when the selector lever is
shifted from N to D or R range while the
engine is idling, the cause is probably a
malfunction of the engine system, damper
clutch solenoid valve, valve body or torque
converter (damper clutch malfunction). a.
Malfunction of the engine system
b. Malfunction of the damper clutch control
solenoid valve
c. Malfunction of the valve body
d. Malfunction of the torque converter
(Malfunction of the damper clutch)
Shocks when changing from N to D and large
time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is
shifted from N to D range while the engine is
idling, the cause is probably abnormal
underdrive clutch pressure or a malfunction of
the underdrive clutch, valve body or idle
position switch. a.
Abnormal underdrive clutch pressure
b. Abnormal low and reverse brake pressure
c. Malfunction of the underdrive solenoid
valve
d. Malfunction of the valve body
e. Malfunction of the idle position switch
Malfunction when
starting Shocks when changing from N to R and large
time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is
shifted from N to R range while the engine is
idling, the cause is probably abnormal reverse
clutch pressure or low and reverse brake
pressure, or a malfunction of the reverse
clutch, low and reverse brake, valve body or
idle position switch. a.
Abnormal reverse clutch pressure
b. Abnormal low and reverse brake pressure
c. Malfunction of the low and reverse
solenoid valve
d. Malfunction of the reverse clutch
e. Malfunction of the low and reverse brake
f. Malfunction of the valve body
g. Malfunction of the idle position switch

Shocks when changing from N to D, N to R
and large time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is
shifted from N to D range and from N to R
range while the engine is idling, the cause is
probably abnormal line pressure or a
malfunction of the oil pump or valve body.a.
Abnormal line pressure
b. Malfunction of the oil pump
c. Malfunction of the valve body
Malfunction when
shifting Shocks and running up
If shocks occur when driving due to up
shifting or down shifting and the transmission
speed becomes higher than the engine
speed, the cause is probably abnormal line
pressure or a malfunction of a solenoid valve,
oil pump, valve body or of a brake or clutch. a.
Abnormal line pressure
b. Malfunction of each solenoid valve
c. Malfunction of the oil pump
d. Malfunction of the valve body
e. Malfunction of each brake or each clutch
Displaced shifting
points All points
If all shift points are displaced while driving,
the cause is probably a malfunction of the
output shaft speed sensor, TPS or of a
solenoid valve. a.
Malfunction of the output shaft speed
sensor
b. Malfunction of the throttle position sensor
c. Malfunction of each solenoid valve
d. Abnormal line pressure
e. Malfunction of the valve body
f. Malfunction of the TCM(PCM)
Some points
If some of the shift points are displaced while
driving, the cause is probably a malfunction of
the valve body, or it is related to control and
is not an abnormality. a.
Malfunction of the valve body
Does not shift No diagnosis codes
If shifting does not occur while driving and no
diagnosis codes are output, the cause is
probably a malfunction of the transaxle range
switch, or TCM(PCM) a.
Malfunction of the transaxle range
b. Malfunction of the TCM(PCM)
Malfunction while
driving Poor acceleration
If acceleration is poor even if down shifting
occurs while driving, the cause is probably a
malfunction of the engine system or of a
brake or clutch. a.
Malfunction of the engine system
b. Malfunction of the brake or clutch
Malfunction while
driving Vibration
If vibration occurs when driving at constant
speed or when accelerating and deceleration
in top range, the cause is probably abnormal
damper clutch pressure or a malfunction of
the engine system, damper clutch control
solenoid valve, torque converter or valve
body. a.
Abnormal damper clutch pressure
b. Malfunction of the engine system
c. Malfunction of the damper clutch control
solenoid valve
d. Malfunction of the torque converter
e. Malfunction of the valve body
Transaxle range switch system
The cause is probably a malfunction of the inhibitor switch circuit,
ignition switch circuit or a defective TCM(PCM). a.
Malfunction of the transaxle range switch
b. Malfunction of the ignition switch
c. Malfunction of connector
d. Malfunction of the TCM(PCM)
Idle position switch system
The cause is probably a defective idle position switch circuit, or a
defective TCM(PCM). a.
Malfunction of the triple pressure switch
b. Malfunction of connector
c. Malfunction of the TCM(PCM)

3. Prohibit Adaptive Controla. No learning is done
6. Prohibit Torque Reduction Request a. No torque reduction is sent to ECU
7. Prohibit Lockup Control a. Stay in non- lockup control state
8. Substitute Input Value Oil Temperature a. Set oil temperature(tf) to 80° C (192°F)
9. Substitute Value Speed Ratio a. Set speed ratio to 0.7
10. Substitute CAN Input Value a. Set engine torque to 42 Ë
b. Set throttle position to 50Ë
c. Set accelerator pedal signal to 50 Ë
d. Set engine speed (Ne) to 3000 rpm
e. Set vehicle speed to 0 km/h
f. Set status of air condition relay to OFF
11. Prohibit VFS control a. Stop the Line Pressure Control till IG Off
Failsafe according to the DTC
a.Refer the detail description in the previous page for the indicated number on the ‘Failsafe’ column.
Items Type of errorFailsafeOBD - II
relevant DTC DTC
Oil temperature sensor Short to ground
2, 3, 7, 8, 11P0712
P0712
Open or short to B+ P0713P0713
Stuck signal P0711P0711
Sensor fail P0711P0711
PG- A Short to ground
1,11P0717
P0717
Open or short to B+
PG- B Short to ground
P0722P0722
Open or short to B+
Sensor fail P0721P0721
Brake switch Open
2―P0713
Short to B+
LR Solenoid valve Short to B+
0,11P0750
P0750
Open or short to ground
2nd Solenoid valve Short to B+
P0760P0760
Open or short to ground
UD Solenoid valve Short to B+
P0755P0755
Open or short to ground
OD Solenoid valve Short to B+
P0765P0765
Open or short to ground
Open or short to B+ P0765P0765

13OIL TEMPERATURE °C40°CCurrent Oil temperature 80°C
14 SHIFT POSITION N,P,REV/1st G/…/5th
G D
Current shift position P, N
15 SELECT LEVEL P,N/R/D/SPORTS DCurrent shift lever position P, N
16 A/CON SWITCH OFF/ON/- /NOT
SUPP OFF
-
17 IDLE STATUS OFF/ON/- /NOT
SUPP ON
When idling, ON
18 BRAKE SWITCH OFF/ON/- /NOT
SUPP ON
When braking, ON
19 AUTO CRUISE
SWITCH OFF/ON/- /NOT
SUPP
20 AUTO CRUISE
RELEASE ―
―
21 SPORT MODE
SELECT SW OFF/ON/- /NOT
SUPP ON
When selecting sport mode, ON
22 SPORT MODE UP SW OFF/ON/- /NOT
SUPP ON
When Selecting Sport mode up, ON
23 SPORT MODE DOWN
SW OFF/ON/- /NOT
SUPP ON
When selecting sport mode down,
ON
24 A/T CONTROL RELAY
VOLT V
12.9V 0V
25 ENGINE TORQUE %20%
26 HIVEC MODE A/B/C/D/E/F/G/H/I/J/K FA/B/C/D is control mode, F is
release mode F
HIVEC - SAT(SIEMENS ADAPTIVE TRANSMISSION CONTROL) Mode (Shift Patten) Shift patten Description(Help)SCAN DISPLAY
ECONOMY Economy Driver shift patten for flat road A
MEDIUM Shift patten for medium road B
SPORTS Shift patten for sport road C
LOAD 1 Shift patten for low land, slow grade and slope D
LOAD 2 Shift patten for low land, steep grade and slope E
LOAD 3 Shift patten for downhill road F
LOAD 1 HI ALT Shift patten for high land, steep grade and slope G
LOAD 2 HI ALT Shift patten for low land, steep grade and slope H
HI TEMP Shift patten for high temperture ATF I
WARM UP Shift patten for exhaust gas decrease J
HOLD Shift patten for when hold, switch on K
Actuator inspection NO ITEM NAME Actuator DrivingCondition
1 LR SOLENOID(SCSV A) 1. IG Key ON
2. Inhibitor SW normal
3. P range
2
UD SOLENOID(SCSV B)

32ND SOLENOID(SCSV C)
Solenoid valve driver for 5sec.3. P range
4. Vehicle speed 0km/h
5. Engine stop
6. No failure
7. TPS < 1V
4
OD SOLENOID(SCSV D)
5 TORQUE CONVERTER SOLENOID VALVE
6 A/T CONTROL RELAY OFF for 3 sec. -
7 INTELLIGENT SHIFT PROHIBIT Prohibit until IG off -
8 CLEAR LEARNING VALUE --
ROAD TEST
No.Condition OperationJudgment value Check item
1 Ignition switch : OFF
Ignition switch
(1) ON Battery voltage (mV)
Control relay
2 a.
Ignition switch :
ON
b. Engine : Stopped
c. Selector lever
position : P Selector lever position
(1) P, (2) R, (3) N, (4) D
(1) P, (2) R, (3) N, (4)
DTransaxle range switch
Accelerator pedal
(1) Released
(2) Half depressed
(3) Depressed (1) 400~1,000 mV
(2)Gradually rises
from (1)
(3) 4,500~5,000 mVThrottle position sensor
Brake pedal
(1) Depressed
(2) Released (1) ON
(2) OFF
Brake switch
3 a.
Ignition switch : ST
b. Engine : Stopped Starting test with lever P or
N range
Starting should be
possibleStarting possible or
impossible
4 Warming up
Drive for 15 minutes or
more so that the automatic
fluid temperature becomes
70~90°C Gradually rises to
70~90°C
Oil temperature sensor
5 a.
Engine : Idling
b. Selector lever
position : N A/C switch
(1) ON
(2) OFF
(1) ON
(2) OFF
Triple pressure switch
Accelerator pedal
(1) Released
(2) Half depressed (1) ON
(2) OFF
Idle position switch
(1) 600~900 rpm
(2) Gradually rises
from (1)
(1) Data changes Communication with
engine - ECU
Selector lever position
(1) N→D
(2) N→R Should be no
abnormal shifting
shocks
Time lag should be
within 2 secondsMalfunction when starting
Selector lever position
: N (Carry out on a
flat and straight road) Selector lever position and
vehicle speed
a. Idling in 1st gear
(Vehicle stopped)
b. Driving at constant
speed of 20 km/h in 1st
gear (2) 1st, (4) 3rd, (3)
2nd, (5) 4th
Shift condition
(2) 0%, (4) 100%, (3)
100%, (5) 100% Low and reverse solenoid
valve
(2) 0%, (4) 0%, (3)
0% Underdrive solenoid valve

6c.
Driving at constant
speed of 30 km/h in 2nd
gear
d. Driving at 50 km/h in 3rd
gear with accelerator
fully closed
e. Driving at constant
speed of 50 km/h in 4th
gear (1) 100%, (2) 0%, (3)
100%
Second solenoid valve
(2) 100%, (3) 100%,
(4) 0% Overdrive solenoid valve
(1) 0km/h
(4) 50km/h Vehicle speed sensor
(4) 1,800 ~ 2,100rpm Input shaft speed sensor
(4) 1,800 ~ 2,100rpm Output shaft speed sensor
7 Selector lever position
: D (Carry out on a
flat and straight road)
a.
Accelerate to 4th gear at
a throttle position sensor
output of 1.5V
(accelerator opening
angle of 30 %).
b. Gently decelerate to a
standstill.
c. Accelerate to 4th gear at
a throttle position sensor
output of 2.5 V
(accelerator opening
angle of 50%).
d. While driving at 60 km/h
in 4th gear, shift down
to 3rd gear.
e. While driving at 40 km/h
in 3rd gear, shift down
to 2nd gear.
f. While driving at 20 km/h
in 2nd gear, shift down
to 1st gear. For (1), (2) and (3),
the reading should be
the same as the
specified output shaft
torque, and no
abnormal shocks
should occur.
For (4), (5) and (6),
downshifting should
occur immediately
after the shifting
operation is made.
Malfunction when shifting
Displaced shift points
Does not shift
Does not shift from 1 to 2 or
2 to 1
Does not shift from 2 to 3 or
3 to 2
Does not shift from 3 to 4 or
4 to 3
8 Selector lever position
: N (Carry out on a
flat and straight road)
Move selector lever to R
range drive at constant
speed of 10km/h The ratio between
input and output shaft
speed sensor data
should be the same
as the gear ratio
when reversing.Does not shift
TORQUE CONVERTER STALL TEST
This test measures the maximum engine speed when the selector lever is in the D or R position. The torque converter
stalls to test the operation of the torque converter, starter motor, one- way clutch operation, the holding performance of
the clutches, and brakes in the transaxle.
Do not let anybody stand in front of or behind the vehicle while this test is being carried out
1. Check the automatic transmission fluid level and temperature, and the engine coolant temperature.
a. Fluid level : At the HOT mark on the oil level gauge
b. Fluid temperature : 80~100°C (176~212°F)
c. Engine coolant temperature : 80~100°C(176~212°F)
2. Prevent all the wheels from moving during the test.
3. Pull the parking brake lever up, with the brake pedal fully depressed.
4. Start the engine.

5.Move the selector lever to the "D" position, fully depress the accelerator pedal and take a reading of the maximum
engine speed at this time.
Stall speed : 2,100~2,900rpm
a.The throttle should not be left fully open for any more than five seconds.
b. If carrying out the stall test two or more times, move the selector lever to the "N" position and run the
engine at 1,000 r/min to let the automatic transaxle fluid cool down before carrying out subsequent tests.
6. Move the selector lever to the "R" position and carry out the same test again.
TORQUE CONVERTER STALL TEST CONCLUSION
1.Stall speed is too high in both "D" and "R" ranges
a. Low line pressure
b. Low & reverse brake(B) slippage
2. Stall speed is to high in "D" range only
a. Underdrive clutch(C) slippage
3. Stall speed is too high in "R" range only
a. Reverse clutch(A) slippage
4. Stall speed too low in both "D" and "R" ranges
a. Malfunction of torque converter(D)
b. Insufficient engine output
HYDRAULIC PRESSURE TEST
1.Warm up the engine until the automatic transaxle fluid temperature is 80- 100°C.
2. Lift up the vehicle so that the wheels are free to turn.
3. Connect the special tool (oil pressure gauge) to each pressure discharge port.
4. Measure the hydraulic pressure at each port under the conditions given in the standard hydraulic pressure table,
and check that the measured values are within the standard value ranges.
5. If a value is outside the standard range, correct the problem while referring to the hydraulic pressure test diagnosis
table.