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)
Triple pressure switch system
The cause is probably a defective dual pressure switch circuit or a
defective TCM(PCM).a.
Malfunction of the triple pressure switch
b. Malfunction of connector
c. Malfunction of A/C system
d. Malfunction of the TCM(PCM)
Vehicle speed sensor system
The cause is probably a defective vehicle speed sensor circuit or a
defective TCM(PCM). a.
Malfunction of the vehicle speed sensor
b. Malfunction of connector
c. Malfunction of the TCM(PCM)
DTC TROUBLESHOOTING INDEX
No. Code ItemMILRemark
1 P0707 TRANSAXLE RANGE SWITCH CIRCUIT LOW INPUT ON
2 P0708 TRANSAXLE RANGE SWITCH CIRCUIT HIGH INPUT ON
3 P0711 TRANSAXLE FLUID TEMPERATURE SENSOR RATIONALITY ON
4 P0712 TRANSAXLE FLUID TEMPERATURE SENSOR CIRCUIT LOW INPUT ON
5 P0713 TRANSAXLE FLUID TEMPERATURE SENSOR CIRCUIT HIGH INPUT ON
6 P0717 A/T INPUT SPEED SENSOR CIRCUIT - OPEN or SHORT(GND) ON
7 P0722 AT OUTPUT SPEED SENSOR CIRCUIT - OPEN or SHORT(GND) ON
8 P0731 GEAR 1 INCORRECT RATIO ON
9 P0732 GEAR 2 INCORRECT RATIO ON
10 P0733 GEAR 3 INCORRECT RATIO ON
11 P0734 GEAR 4 INCORRECT RATIO ON
12 P0741 TORQUE CONVERTER CLUTCH STUCK OFF ON
13 P0742 TORQUE CONVERTER CLUTCH STUCK ON ON
14 P0743 TORQUE CONVERTER CLUTCH CONTROL SOLENOID VALVE - OPEN or
SHORT(GND) ON
15 P0748 VFS SOLENOID OFF
16 P0750 LOW and REVERSE SOLENOID VALVE CIRCUIT - OPEN or SHORT(GND) ON
17 P0755 UNDER DRIVE SOLENOID VALVE CIRCUIT - OPEN or SHORT(GND) ON
18 P0760 SECOND SOLENOID VALVE CIRCUIT - OPEN or SHORT(GND) ON
19 P0765 OVERDRIVE SOLENOID VALVE CIRCUIT - OPEN or SHORT(GND) ON
20 P0885 A/T CONTROL RELAY - OPEN or SHORT(GND) ON
21 P0890 TCM power Relay sense circuit low ON
22 P0891 TCM power Relay sense circuit High ON
Failsafe
Activation and deactivation of error failsafe is coordinated Error failsafe Management.
Once Error failsafe is activated, it will be kept until ignition key OFF.
In every new TCM start, TCM start with No Error failsafe and No Error present.
0. Mechanical Limp Home Mode
a. Switch off A/T relay
1. Electrical Limp Home Mode a. Keep 2nd / 3rd gear
2. Prohibit Intelligent Shift a. Fuzzy SAT(Siements Adaptive Transmission) shift pattern (Medium Driver, Sporty Driver) will not be used
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
DCC Solenoid valveShort to B+
P0743P0743
Open or short to ground
1st speed asynchronous Synchronous error
0,11P0731
P0731
2nd speed asynchronous Synchronous error P0732P0732
3rd speed asynchronous Synchronous error P0733P0733
4th speed asynchronous Synchronous error P0734P0734
Reverse speed asynchronous Synchronous error ――
CAN No ID from ECM
2,3,6,7,9,10,11―
P1604
CAN BUS off ―P1603
Damper clutch Abnormal system 7P0741P0741
A/T relay Short to ground or open 0,11P0885P0885
Inhibitor switch Short to ground or open
―P0707
P0707
Short to B+ or short between switches P0708P0708
VFS Short to B+
11
―P0748
Short to ground 0,11
Open 11
CKP sensor Sensor errorNe=3,000rpm
7,9 ―
―
TPS sensor Sensor errorTPS=50Ë――
SERVICE DATA LIST(WITH SCAN TOOL)
No.ITEM NAME UNITDATA Data Description Failure
1 ENGINE RPM rpm700 rpmCurrent Engine rpm 0 rpm
2 VEHICLE SPEED km/h0km/hCurrent Vehicle speed 0km/h
3 THROTTLE
P.SENSOR %
12.5%Current TPS open angle 0%
4 INPUT SPEED(PG - A) rpm700 rpmInput speed rpm. Always output rpm
when turning start ON 0 rpm
5 OUTPUT SPEED(PG -
B) rpm
0 rpmOutput speed rpm. Always output
rpm when driving 0 rpm
6 DCC(TCC) SOLENOID
DUTY %
0%Control 0%
→ 100% when
operating Damper Clutch
7 DAMPER CLUTCH
SLIP rpm
260 rpmCurrent Damper clutch slip ratio 0 rpm
8 LR SOLENOID DUTY %100%Control 100%
→ 0% when
operating brake 0%
9 UD SOLENOID DUTY %100%Control 100%
→ 0% when
operating clutch 0%
10 2ND SOLENOID DUTY %100%Control 100%
→ 0% when
operating clutch 0%
11 OD SOLENOID DUTY %100%Control 100%
→ 0% when
operating clutch 0%
12 VFS SOLENOID DUTY Ë0~400Ë ―
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.Remove the inhibiter switch connector (A).
6.Remove the solenoid valve connector (A).
7.Remove the input speed sensor connector (A).
8.Remove the output speed sensor connector (A).
9.Remove the vehicle speed sensor connector (A).
10. Remove the control cable assembly(C) by removing the nut (A) and clip (B).
11.Disconnect the transaxle oil cooler hoses (B) from the tubes by loosening the clamps (A).
12.Remove the transaxle mounting bolts (A).