SsangYong Korando II (1996-2006 year). Manual - part 284

5A-40  AUTOMATIC TRANSMISSION

SSANGYONG  MY2002

Dye and Black Light Method

1. Add dye to the transmission through the transmission

fluid filler plug. Follow the manufacturer’s recommen-
dation for the amount of dye to be used.

2. Use the black light to find the fluid leak.

3. Make the necessary repairs.

Repairing the Fluid Leak

Once the leak point is found the source of the leak
must be determined. The following list describes the
potential causes for the leak:

•

Fasteners are not torqued to specification.

•

Fastener threads and fastener holes are dirty or
corroded.

•

Gaskets, seals or sleeves are misaligned, damaged
or worn.

•

Damaged, warped or scratched seal bore or gasket
surface.

•

Loose or worn bearing causing excess seal or sleeve
wear.

•

Case or component porosity.

•

Fluid level is too high.

•

Plugged vent or damaged vent tube.

•

Water or coolant in fluid.

•

Fluid drain back holes plugged.

ELECTRICAL / GARAGE SHIFT
TEST

This preliminary test should be performed before a hoist
or road test to make sure electronic control inputs are
connected and operating. If the inputs are not checked
before operating the transmission, a simple electrical
c o n d i t i o n   c o u l d   b e   m i s d i a g n o s e d   a s   a   m a j o r
transmission condition.

A scan tool provides valuable information and must
be used on the automatic transmission for accurate
diagnosis.

1. Move gear shift control lever to P (Park) and set

the parking brake.

2. Connect scan tool to Data Link Connector (DLC)

terminal.

3. Start engine.

4. Turn the scan tool ON.

5. Verify that the appropriate signals are present.

These signals may include:

•

ENGINE SPEED

•

VEHICLE SPEED

•

THROTTLE POSITION

•

ACCEL. PEDAL POSITION

•

TRANSMISSION GEAR STATE

•

GEAR SHIFT LEVER POSITION

•

TRANSMISSION FLUID TEMPERATURE

•

CLOSED THROTTLE POSITION LEARN

•

OPEN THROTTLE POSITION LEARNT

•

CLOSED ACCEL. PEDAL POSITION LEARNT

•

OPEN ACCEL. PEDAL POSITION LEARNT

•

A/C COMPRESSOR STATUS

•

KICKDOWN SWITCH STATUS

•

4WD STATUS

•

MODE SWITCH

•

THROTTLE POSITION VOLTAGE

•

GEAR SHIFT LEVER POSITION VOLTAGE

•

TRANS. FLUID TEMPERATURE VOLTAGE

•

A/C SWITCH

•

KICKDOWN SWITCH VOLTAGE

•

4WD LAMP LOW VOLTAGE

•

4WD LAMP HIGH VOLTAGE

•

MODE SWITCH VOLTAGE

•

BATTERY VOLTAGE

6. Monitor the A/C COMPRESSOR STATUS signal

while pushing the A/C switch.

•

The A/C COMPRESSOR STATUS should come
ON when the A/C switch is pressed, and turn
OFF when the A/C switch is repushed.

7. Monitor the GEAR SHIFT LEVER POSITION signal

and move the gear shift control lever through all
the ranges.

•

Verify that the GEAR SHIFT LEVER POSITION
value matches the gear range indicated on the
instrument panel or console.

•

Gear selections should be immediate and not
harsh.

8. Move gear shift control lever to neutral and monitor

the THROTTLE POSITION signal while increasing
and decreasing engine speed with the accelerator
pedal.

•

THROTTLE POSITION should increase with en-
gine speed.

ROAD TEST PROCEDURE

•

Perform the road test using a scan tool.

•

This test should be performed when traffic and road
conditions permit.

•

Observe all traffic regulations.

ELECTRONIC ADJUSTMENTS

Idle Speed Adjustments

Carry out the adjustments to the idle speed as detailed
in the workshop manual.

Vehicle Coding

The vehicle coding is integrated as part of the
diagnostic software. A scan tool has the function to
code the ve-hicle through the K-line.

5A-40  AUTOMATIC TRANSMISSION

SSANGYONG  MY2002

Dye and Black Light Method

1. Add dye to the transmission through the transmission

fluid filler plug. Follow the manufacturer’s recommen-
dation for the amount of dye to be used.

2. Use the black light to find the fluid leak.

3. Make the necessary repairs.

Repairing the Fluid Leak

Once the leak point is found the source of the leak
must be determined. The following list describes the
potential causes for the leak:

•

Fasteners are not torqued to specification.

•

Fastener threads and fastener holes are dirty or
corroded.

•

Gaskets, seals or sleeves are misaligned, damaged
or worn.

•

Damaged, warped or scratched seal bore or gasket
surface.

•

Loose or worn bearing causing excess seal or sleeve
wear.

•

Case or component porosity.

•

Fluid level is too high.

•

Plugged vent or damaged vent tube.

•

Water or coolant in fluid.

•

Fluid drain back holes plugged.

ELECTRICAL / GARAGE SHIFT
TEST

This preliminary test should be performed before a hoist
or road test to make sure electronic control inputs are
connected and operating. If the inputs are not checked
before operating the transmission, a simple electrical
c o n d i t i o n   c o u l d   b e   m i s d i a g n o s e d   a s   a   m a j o r
transmission condition.

A scan tool provides valuable information and must
be used on the automatic transmission for accurate
diagnosis.

1. Move gear shift control lever to P (Park) and set

the parking brake.

2. Connect scan tool to Data Link Connector (DLC)

terminal.

3. Start engine.

4. Turn the scan tool ON.

5. Verify that the appropriate signals are present.

These signals may include:

•

ENGINE SPEED

•

VEHICLE SPEED

•

THROTTLE POSITION

•

ACCEL. PEDAL POSITION

•

TRANSMISSION GEAR STATE

•

GEAR SHIFT LEVER POSITION

•

TRANSMISSION FLUID TEMPERATURE

•

CLOSED THROTTLE POSITION LEARN

•

OPEN THROTTLE POSITION LEARNT

•

CLOSED ACCEL. PEDAL POSITION LEARNT

•

OPEN ACCEL. PEDAL POSITION LEARNT

•

A/C COMPRESSOR STATUS

•

KICKDOWN SWITCH STATUS

•

4WD STATUS

•

MODE SWITCH

•

THROTTLE POSITION VOLTAGE

•

GEAR SHIFT LEVER POSITION VOLTAGE

•

TRANS. FLUID TEMPERATURE VOLTAGE

•

A/C SWITCH

•

KICKDOWN SWITCH VOLTAGE

•

4WD LAMP LOW VOLTAGE

•

4WD LAMP HIGH VOLTAGE

•

MODE SWITCH VOLTAGE

•

BATTERY VOLTAGE

6. Monitor the A/C COMPRESSOR STATUS signal

while pushing the A/C switch.

•

The A/C COMPRESSOR STATUS should come
ON when the A/C switch is pressed, and turn
OFF when the A/C switch is repushed.

7. Monitor the GEAR SHIFT LEVER POSITION signal

and move the gear shift control lever through all
the ranges.

•

Verify that the GEAR SHIFT LEVER POSITION
value matches the gear range indicated on the
instrument panel or console.

•

Gear selections should be immediate and not
harsh.

8. Move gear shift control lever to neutral and monitor

the THROTTLE POSITION signal while increasing
and decreasing engine speed with the accelerator
pedal.

•

THROTTLE POSITION should increase with en-
gine speed.

ROAD TEST PROCEDURE

•

Perform the road test using a scan tool.

•

This test should be performed when traffic and road
conditions permit.

•

Observe all traffic regulations.

ELECTRONIC ADJUSTMENTS

Idle Speed Adjustments

Carry out the adjustments to the idle speed as detailed
in the workshop manual.

Vehicle Coding

The vehicle coding is integrated as part of the
diagnostic software. A scan tool has the function to
code the ve-hicle through the K-line.

AUTOMATIC TRANSMISSION  5A-41

SSANGYONG  MY2002

SYMPTOM DIAGNOSIS

DRIVE FAULTS

Condition

No Drive in D

Possible Causes

•

Insufficient auto transmission
fluid.

•

Blocked feed in C1/C2 cylinder.

•

‘Z’ link displaced.

•

Primary Regulator Valve (PRV)
jammed open.

•

Overdrive shaft or input shaft
seal rings failed.

•

3-4 or 1-2 One Way Clutch
(OWC) installed backwards or
failed.

•

C2 piston broken or cracked.

•

Rear band or servo faulty.

•

Failure in C3, C3 hub or C1/C2
cylinder.

•

Damaged input shaft sealing rings.

•

Jammed Primary Regulator
Valve (PRV).

•

Damaged/broken pump gears.

•

Dislodged output shaft snap ring.

Action

•

Check the fluid level. Top up as
necessary.

•

Inspect and clean C1/C2 feed.

•

Reinstall/renew the ‘z’ link.

•

Remove, clean and re-install the
PRV.

•

Inspect and replace as necessary.

•

Inspect and replace as necessary.

•

Inspect and replace as necessary.

•

Check servo adjustment or
replace rear band as necessary.

•

Check for failure in C3, C3 hub
or C1/C2 cylinder. Repair as
necessary.

•

Inspect and replace as necessary.

•

Inspect and clean PRV.

•

Inspect and replace pump
gears as necessary.

•

Inspect and repair as necessary.

No Drive in Reverse

No engine braking in Manual 1

Engine braking in Manual 1 is OK

No drive in Drive and Reverse

5A-42  AUTOMATIC TRANSMISSION

SSANGYONG  MY2002

FAULTY SHIFT PATTERN

Condition

2-3 shift only (no 4th or 1st)

Possible Causes

•

S1 always OFF.

•

S1 always ON.

•

S2 always OFF.

•

S2 always ON.

•

B1 failed.

•

Loose band adjustment.

•

Front servo piston or seal failed.

•

S1/S2 ball misplaced,

•

Smaller ‘O’ ring on front servo
piston failed or missing.

•

2-3 shift valve jammed.

•

C1 clutch failed or slipping in 3rd
and 4th. (Gives 1st in 3rd and
2nd in 4th.)

•

Over-run Clutch (OC) /low ball
misplaced.

•

Rear band slipping when hot.

•

Reverse/Low-1st ball misplaced.

•

Rear servo inner ‘O’ ring
missing.

•

1-2 shift valve jammed.

•

2-3 shift valve jammed.

•

Inhibitor switch fault, 1-2-3 only.

•

3-4 shift valve jammed.

Action

•

Inspect S1. Repair or replace as
necessary.

•

Check for 12 Volts applied to S1
at all times or for wiring fault.

•

Inspect S1. Repair or replace as
necessary.

•

Check for 12 Volts applied to S1
at all times or for wiring fault.

•

Inspect S2. Repair or replace as
necessary.

•

Check for open circuit or wiring
fault.

•

Inspect S2. Repair or replace as
necessary.

•

Check for open circuit or wiring
fault.

•

Inspect and repair as necessary.

•

Inspect and adjust as necessary.

•

Inspect and repair as necessary.

•

Inspect and replace or refit as
necessary

•

Inspect ‘O’ ring. Refit or replace
as necessary.

•

Inspect the 2-3 shift valve.
Repair or replace as necessary.

•

Inspect C1 clutch. Repair or
replace as necessary.

•

Inspect ball. Refit or replace as
necessary.

•

Inspect rear band adjustment.
Adjust as necessary.

•

Inspect ball. Refit or replace as
necessary.

•

Inspect ‘O’ ring. Refit or replace
as necessary.

•

Inspect the 1-2 shift valve.
Repair or replace as necessary.

•

Inspect the 2-3 shift valve.
Repair or replace as necessary.

•

Inspect inhibitor switch. Repair
or replace as necessary.

•

Inspect the 3-4 shift valve.
Repair or replace as necessary.

1-4 shift only1-3-4
(Delayed 1-2 shift)

4-3 shift only

1-2-Neutral (1st over run)

1-3 shift only

1-3-4 only

1-2-1 only

No manual 4-3, 3-2 or 2-1

No manual 1st

1st gear only or 2nd,3rd, and 4th
only

1st and 2nd only or 1st, 3rd and
4th only

1st, 2nd and 4th only or 1st, 2nd,
and 3rd (tied up in 3rd)