Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 435

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-31

3. Connect the special tools (2,942 kPa (427 psi) oil pressure

gauge [MD998330] and adapters [MD998332, MD998900])
to each pressure discharge port.

NOTE:

.

•

2ND: Second brake pressure port

•

UD: Underdrive clutch pressure port

•

LR: Low-reverse brake pressure port

•

DA: Torque converter apply pressure port

•

DR: Torque converter release pressure port

•

RV: Reverse clutch pressure port

•

OD: Overdrive clutch pressure 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.

STANDARD HYDRAULIC PRESSURE TEST

AC001827

AC001825

AC001828

MEASUREMENT CONDITION

STANDARD HYDRAULIC PRESSURE kPa (psi)

SELECTOR
LEVER
POSITION

SHIFT
POSITION

ENGINE
SPEED (r/min)

UNDERDRIVE
CLUTCH
PRESSURE
[UD]

REVERSE
CLUTCH
PRESSURE
[RV]

OVERDRIVE
CLUTCH
PRESSURE
[OD]

LOW-
REVERSE
BRAKE
PRESSURE
[LR]

SECOND
BRAKE
PRESSURE
[2ND]

TORQUE
CONVERTER
PRESSURE
[DR]

P

−

2,500

−

−

−

220

−

360

(32

−

52)

−

250

−

390

(37

−

57)

R

Reverse

2,500

−

1,270

−

1,770 (185

−

256)

−

1,270

−

1,770
(185

−

256)

−

500

−

700

(73

−

101)

N

−

2,500

−

−

−

220

−

360

(32

−

52)

−

250

−

390

(37

−

57)

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-32

NOTE: If the torque converter pressure is measured, the engine speed should be 1,500 r/min or less.

L <Vehicles
without
sport
mode> or
Sport mode
<Vehicles
with sport
mode>

1st gear

2,500

1,010

−

1,050 (147

−

152)

−

−

−

1,010

−

1,050
(147

−

152)

500

−

700

(73

−

101)

2 <Vehicles
without
sport
mode> or
Sport mode
<Vehicles
with sport
mode>

2nd gear

2,500

1,010

−

1,050 (147

−

152)

−

−

−

1,010

−

1,050
(147

−

152)

500

−

700

(73

−

101)

3 <Vehicles
without
sport
mode> or
Sport mode
<Vehicles
with sport
mode>

3rd gear

2,500

784

−

882

(113

−

128)

−

784

−

882

(113

−

128)

−

−

−

D
<Vehicles
without
sport
mode> or
Sport mode
<Vehicles
with sport
mode>

4th gear

2,500

−

−

784

−

882

(113

−

128)

−

784

−

882

(113

−

128)

−

MEASUREMENT CONDITION

STANDARD HYDRAULIC PRESSURE kPa (psi)

SELECTOR
LEVER
POSITION

SHIFT
POSITION

ENGINE
SPEED (r/min)

UNDERDRIVE
CLUTCH
PRESSURE
[UD]

REVERSE
CLUTCH
PRESSURE
[RV]

OVERDRIVE
CLUTCH
PRESSURE
[OD]

LOW-
REVERSE
BRAKE
PRESSURE
[LR]

SECOND
BRAKE
PRESSURE
[2ND]

TORQUE
CONVERTER
PRESSURE
[DR]

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-33

HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE

SYMPTOMS

PROBABLE CAUSE

All hydraulic pressures are high. Incorrect transaxle control cable adjustment

Malfunction of the regulator valve

All hydraulic pressures are low.

Incorrect transaxle control cable adjustment

Malfunction of the oil pump

Clogged internal oil filter

Clogged oil cooler

Malfunction of the regulator valve

Malfunction of the relief valve

Incorrect valve body installation

Hydraulic pressure is abnormal
in reverse gear only.

Malfunction of the regulator valve

Clogged orifice

Incorrect valve body installation

Hydraulic pressure is abnormal
in 3rd or 4th gear only.

Malfunction of the overdrive solenoid valve

Malfunction of the overdrive pressure control valve

Malfunction of the regulator valve

Malfunction of the switch valve

Clogged orifice

Incorrect valve body installation

Only underdrive hydraulic
pressure is abnormal.

Malfunction of the oil seal K

Malfunction of the oil seal L

Malfunction of the oil seal M

Malfunction of the underdrive solenoid valve

Malfunction of the underdrive pressure control valve

Malfunction of check ball

Clogged orifice

Incorrect valve body installation

Only reverse clutch hydraulic
pressure is abnormal.

Malfunction of the oil seal A

Malfunction of the oil seal B

Malfunction of the oil seal C

Clogged orifice

Incorrect valve body installation

Only overdrive hydraulic
pressure is abnormal.

Malfunction of the oil seal D

Malfunction of the oil seal E

Malfunction of the oil seal F

Malfunction of the overdrive solenoid valve

Malfunction of the overdrive pressure control valve

Malfunction of check ball

Clogged orifice

Incorrect valve body installation

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-34

Only low-reverse hydraulic
pressure is abnormal.

Malfunction of the oil seal I

Malfunction of the oil seal J

Malfunction of the low-reverse solenoid valve

Malfunction of the low-reverse pressure control valve

Malfunction of the switch valve

Malfunction of the fail safe valve A

Malfunction of check ball

Clogged orifice

Incorrect valve body installation

Only second hydraulic pressure
is abnormal.

Malfunction of the oil seal G

Malfunction of the oil seal H

Malfunction of the oil seal O

Malfunction of the second solenoid valve

Malfunction of the second pressure control valve

Malfunction of the fail safe valve B

Clogged orifice

Incorrect valve body installation

Only torque converter pressure
is abnormal.

Clogged oil cooler

Malfunction of the oil seal N

Malfunction of the torque converter clutch solenoid

Malfunction of the torque converter pressure control valve

Malfunction of the torque converter pressure control valve

Clogged orifice

Incorrect valve body installation

Pressure applied to element
which should not receive
pressure.

Incorrect transaxle control cable adjustment

Malfunction of the manual valve

Malfunction of check ball

Incorrect valve body installation

SYMPTOMS

PROBABLE CAUSE