Kia Carens. Instruction — part 157

28

Transaxle overheats

Description ATF smells burnt and/or is discolored

(TROUBLESHOOTING HINTS)

1. ATF leve low
2. TCM malfunction

Step

Inspection

Action

1

Are ATF level and condition OK?
Do transaxle seals, sealant, and gaskets
prevent leakage?

Clear pink : Normal condition
Dark or black (with friction material) : Worn

powertrain components

Milky pink : Water contamination
Light to dark brown (oxidation) : Overheated

or oil fluid

Yes

Go to next step.

No

If ATF level is not OK, add fluid as necessary
If ATF condition is not OK, repair as follows :

•

condition - Overhaul transaxle and repair

or replace parts as necessary ; then go to
next step

•

or conditions - Replace ATF ; then go

to next step

If there is leakage, repair or replace parts as
necessary and/or replace transaxle ; then go
to next step.

2

Check that no diagnostic trouble codes exist
by retrieving DTC's with a scan tool

Yes

Go to next step.

No

Diagnostic trouble code(s) displayed on scan
tool.

• Check for cause of diagnostic trouble

code(s)

If problem remains, go to next step.

Self diagnostic function (Inspection procedure)

1. Connect SST (0K2A1 089 AA0) to data link connector.

2. Turn ignition switch to ON.

3. Check diagnostic trouble code(s), referring to Hi-scan Pro operating manual.

4. If a diagnostic trouble code(s) is displayed, check for cause by using number on diagnostic trouble code table. Repair

as necessary.

5. After repairs, perform After-Repair procedure to verify that there are no remaining diagnostic trouble codes.

After-repair precedure

1. Cancle diagnostic trouble code memory by using SST (0K2A1 089 AA0).

2. Remove SST (0K2A1 089 AA0) from data link connector.

3. Drive vehicle at 31 mph (50 km/h), and depress accelerator pedal fully to activate kickdown. Stop vehicle gradually.

4. Connect SST (0K2A1 089 AA0) to data link connector.

5. Turn ignition switch to ON.

6. Verify that no diagnostic trouble codes are displayed.

7. Remove SST (0K2A1 089 AA0) from data link connector.

Diagnostic trouble code

Code No.

Diagnosed circuit

MIL

P0712

Oil temperature sensor low

ON

P0713

Oil temperature sensor high

ON

P0717

Input/turbine speed sensor circuit malfunction

ON

P0727

Engine speed input malfunction

ON

P0743

Torque converter clutch system circuit malfunction

ON

P0748

Linear solenoid electrical

ON

P0753

Shift solenoid A electrical

ON

P0758

Shift solenoid B electrical

ON

P0963

Shift solenoid C electrical

ON

P1121

TPS signal circuit from PCM to TCM

ON

P1500

Vehicle speed signal malfunction

ON

P0604

TCM Malfunction

OFF

P1780

Torque reduction signal malfunction

OFF

P1800

Engine torque signal malfunction

OFF

Mechanical system tests

Stall test
This test is performed to determine if there is slippage of friction elements or a malfunction of hydraulic components.

1) Never unscrew radiator cap while engine is hot.
2) Wrap a thick cloth around cap when loosening.

1. Engage parking brake and put wheel chocks at front and rear of each wheel.

2. Warm engine thoroughly to raise ATF temperature to an operating level of 140~158°F(60~70°C).

3. Check, and correct as necessary, engine coolant, engine oil, and ATF levels before testing.

4. Connect a tachometer to engine.

Procedure

1. Start engine.

2. Check idle speed in P range. (Refer to emission control system)

Idle speed : 750~850 rpm (with parking brake applied)

3. Shift selector lever to R range.

Perform steps 4 and 5 within 5 seconds to prevent possible transaxle damage.

4. Firmly depress foot brake with left foot and gradually depress accelerator pedal fully with right foot.

5. When engine speed no longer increases, quickly read engine to speed and release accelerator.

6. Move selector lever to N range and allow engine to idle for at least one minute.

1) Idling for at least one minute cools ATF and prevents its deterioration.
2) Allow sufficient cooling time between each stall test.

7. Perform stall tests for remaining ranges in same manner.

A. D range
B. 2 range

C. 1 range

Stall speeds : 2200~2500 rpm

Evaluation of stall test O/D OFF system

Condition

Possible cause

Above specification

In R position and all ranges

Insufficient line pressure

Worn oil pump

Oil leakage from oil
pump, control valve
and/or transaxle case

Stuck pressure
regulator valve

In D range

Forward clutch slipping
One-way clutch 1 slipping
One-way clutch 2 slipping

In 2 range

2-4 brake band slipping

In R range

Low and reverse brake slipping
Reverse clutch slipping
Perform road test to determine whether problem is low and
reverse brake or reverse clutch

1) Engine brake felt in 1 range, 1st gear reverse clutch
2) Engine brake not felt in 1 range Low and reverse brake

Below specification in R position and all ranges

Engine out of tune

One-way clutch slipping whthin torque converter

Time lag test

If selector lever is shifted while engine is idling, there will be a certain time lapse, or time lag, before shock is felt. This
step measures time lag to check condition of N-D, 1-2, and N-R accumulators; forward and one-way clutches; reverse
clutch; and low and reverse brake.

Preparation

Follow preparation procedure outlined in Stall Test.

Procedure