Hyundai Tiburon (2003 year). Manual — part 103

5

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 seconds

Malfunction when starting

6

Selector lever
position : N (Carry out
on a flat and straight
road)

Selector lever position and
vehicle speed

1. Idling in 1st gear (Vehicle

stopped)

2. Driving at constant speed

of 20 km/h in 1st gear

3. Driving at constant speed

of 30 km/h in 2nd gear

4. Driving at 50 km/h in 3rd

gear with accelerator fully
closed

5. Driving at constant speed

of 50 km/h in 4th gear
(Each condition should
be maintained for 10
seconds or more)

(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%
(5) 100%

Underdrive solenoid valve

(2) 100%, (4) 100%,
(3) 0% (5) 0%

Second solenoid valve

(2) 100%, (4) 0%, (3)
100% (5) 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

(3) 0%
(5) Approx. 70~90%

Damper clutch control
solenoid valve

(3) Approx.
100~300rpm
(5) Approx. 0~10rpm

7

Selector lever
position : D (Carry out
on a flat and straight
road)

1. Accelerate to 4th gear at

a throttle position sensor
output of 1.5V
(accelerator opening
angle of 30 %).

2. Gently decelerate to a

standstill.

3. Accelerate to 4th gear at

a throttle position sensor
output of 2.5 V
(accelerator opening
angle of 50%).

4. While driving at 60 km/h

in 4th gear, shif down to
3rd gear.

5. While driving at 40 km/h

in 3rd gear, shift down to
2nd gear.

6. 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

DIAGNOSTIC TROUBLE CODE DESCRIPTION

DTC No

Diagnosis item

Possible cause

P1704

Throttle position sensor

Short circuit

TPS output > 4.8 V with
engine idling

P1703

Open circuit

TPS output < 0.2V with
engine not idling

P1702

Sensor misadjustment

TPS output < 0.2V or > 1.2V
with engine idling

P0713

Fluid temperature sensor

Open circuit

Oil temperature sensor
output > 4.57 V for 1 second
or longer (oil temperature
does not increase)

P0712

Short circuit

Output < 0.49V for 1 second

P0725

CKP sensor

Open circuit

No crankshaft position
sensor output pulse detected
for 5 seconds at vehicle
speed of 25 km/h

P0715

Input speed sensor

Short circuit/open circuit

No input speed sensor output
pulse detected for > 1
second at vehicle speed of >
30 km/h

P0720

Output speed sensor

Short circuit/open circuit

At vehicle speed of > 30
km/h, output speed sensor
output < 50% of vehicle
speed sensor output for > 1
second

P0703

Stop lamp switch

Short circuit/open circuit

At vehicle speed of 6 km/h,
stop lamp switch is ON
continuously for 5 minutes

P0750

LR solenoid valve

Short circuit/open circuit

With relay voltage > 10V,
open or short circuit is
continuously for 0.3 second

P0755

UD solenoid valve

Short circuit/open circuit

P0760

2nd solenoid valve

Short circuit/open circuit

P0765

OD solenoid valve

Short circuit/open circuit

P0743

TCC solenoid valve

Short circuit/open circuit

P0731

Gear shift incomplete

1st

After gear shift, output shaft
speed sensor output x gear
ratio of new gear

≠

input

shaft speed sensor output

P0732

2nd

P0733

3rd

P0734

4th

P0736

Reverse

P1749

Serial communication

Short circuit/open circuit

With ignition ON, battery
voltage > 10V, and engine
speed > 450 r/min,
communication is
continuously irregular for 1
second or communication
error signal is received for >
4 seconds continuously

P0740

TCC

System defect/stuck on

DCC solenoid valve drive
duty ratio is 100% for 4
seconds continuously

P1723

A/T control relay

Earth short circuit/open

After ignition ON, A/T control

circuit

relay voltage < 7V

P0707

Transaxle range switch

Open circuit

No signal is continuous for >
30 seconds

P0708

Short circuit

Above 2 kinds signals are
continuous for 30 seconds

P1630

CAN-BUS OFF

TCM Fail/open/short

Receive BUS-OFF
information from CAN
CONTROLLER

P1631

CAN-TIME OUT ECM

ECM Fail/open/short

No output signal for 1.5
second

P1764

CAN MI-COM CIRCUIT

TCM internal circuit
malfunction

Communication error output
is continuously for > 1
second

INSPECTION CHART FOR DIAGNOSIS CODES

Code

Diagnosis item

Probable cause

P1704

Throttle position sensor system
If the TPS output voltage is 4.8V or higher
when the engine is idling, the output is judged
to be too high and diagnosis code P1704 is set.
If the TPS output voltage is 0.2V or lower at
times other than when the engine is idling, the
output is judged to be too low and diagnosis
code P1703 is set. If the TPS output voltage is
0.2V or lower or if it is 1.2V or higher when the
engine is idling, the TPS adjustment is judged
to be incorrect and diagnosis code P1702 set.

Short circuit

• Malfunction of the throttle

position sensor

• Malfunction of connector

• Malfunction of the TCM

P1703

Open circuit

P1702

Sensor misadjusted

P0713

Fluid temperature sensor system
If the fluid temperature sensor output voltage is
4.57V or more even after driving for 10 minutes
or more (if the fluid temperature does not
increase), it is judged that there is an open
circuit in the fluid temperature sensor and
diagnosis code P0713 is set.

Open circuit
Short circuit

• Malfunction of the oil

temperature sensor

• Malfunction of connector

• Malfunction of the TCM

P0712

P0725

CKP sensor system
If no output pulse is detected from the crank
shaft position sensor for 5 seconds or more
while driving at 25 km/h or more, it is judged
that there is an open circuit in the crank shaft
position sensor and diagnosis code P0725 is
set.

Open circuit

• Malfunction of the crank angle

sensor

• Malfunction of connector

• Malfunction of the TCM

P0715

Input speed sensor system
If no output pulse is detected from the input
shaft speed sensor for 1 second or more while
driving in 3rd or 4th gear at a speed of 30 km/h
or more, there is judged to be an open circuit or
short circuit in the input shaft speed sensor and
diagnosis code P0715 is set. If diagnosis code
P0715 is set four times, the transmission is
locked into 3rd gear (D range) or 2nd gear as a
fail-safe measure.

Short circuit/open
circuit

• Malfunction of the input shaft

speed sensor

• Malfunction of the underdrive

clutch retainer

• Malfunction of connector

• Malfunction of the TCM

P0720

Output speed sensor system
If the output from the output shaft speed sensor
is continuously 50% lower than the vehicle
speed for 1 second or more while driving in 3rd
or 4th gear at a speed of 30 km/h or more,

Short circuit/open
circuit

• Malfunction of the outputs shaft

speed sensor

• Malfunction of connector

• Malfunction of the TCM

• Malfunction of the transfer drive

there is judged to be an open circuit or short-
circuit in the output shaft speed sensor and
diagnosis code P0720 is set. If diagnosis code
P0720 is set four times, the transmission is
locked into 3rd gear (D range) or 2nd gear as a
fail-safe measure.

gear or driven gear

P0703

Stop lamp switch system
If the stop lamp switch is on for 5 minutes or
more while driving, it is judged that there is a
short circuit in the stop lamp switch and
diagnosis code P0703 is set.

Short circuit/open
circuit

• Malfunction of the stop lamp

switch

• Malfunction of connector

• Malfunction of the TCM

P0750

Low and reverse solenoid valve system

Short circuit/Open
circuit

• Malfunction of solenoid valve

• Malfunction of connector

• Malfunction of the TCM

P0755

Underdrive solenoid valve system

Short circuit/Open
circuit

P0760

Second solenoid valve system

Short circuit/Open
circuit

P0765

Overdrive solenoid valve system
If the resistance value for a solenoid valve is
too large or too small, it is judged that there is a
short circuit or an open circuit in the solenoid
valve and the respective diagnosis code is set.
The transmission is locked into 3rd gear as a
fail-safe measure.

Short circuit/Open
circuit

P0743

Torque converter clutch solenoid valve
system
If the resistance value for a solenoid valve is
too large or too small, it is judged that there is a
short circuit or an open circuit in the solenoid
valve and the respective diagnosis code is set.
The transmission is locked into 3rd gear as a
fail-safe measure.

Short circuit/Open
circuit

• Malfunction of the torque

converter clutch solenoid valve

• Malfunction of connector

• Malfunction of the TCM

P0740

Defective system

P0731

1st gear ratio does not meet the specification
If the output from the output shaft speed sensor multiplied by the 1st
gear ratio is not the same as the output from the input shaft speed
sensor after the shift to 1st gear has been completed, diagnosis code
P0731 is set. If diagnosis code P0731 is set four times, the transmission
is locked into 3rd gear as a fail-safe measure.

• Malfunction of the input shaft

speed sensor

• Malfunction of the output shaft

speed sensor

• Malfunction of the underdrive

clutch retainer

• Malfunction of the transfer drive

gear or driven gear

• Malfunction of the low and

reverse brake system

• Malfunction of the underdrive

clutch system

• Noise generated

P0732

2nd gear ratio does not meet the specification
If the output from the output shaft speed sensor multiplied by the 2nd
gear ratio is not the same as the output from the input shaft speed
sensor after the shift to 3rd gear has been completed, diagnosis code
P0732 is set. If diagnosis code P0732 is set four times, the transmission
is locked into 3rd gear as a fail-safe measure.

• Malfunction of the input shaft

speed sensor

• Malfunction of the output shaft

speed sensor

• Malfunction of the underdrive

clutch retainer

• Malfunction of the transfer drive

gear or driven gear

• Malfunction of the underdrive

clutch system

• Malfunction of the second