Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 508

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-324

105

Shift indicator light: 3rd
<Vehicles with sport
mode>

•

Engine: Idling

•

Gear range: 3rd gear

Battery positive voltage

•

Engine: Idling

•

Gear range: other than 3rd gear

0

−

0.9 V

117

Shift indicator light: 2 nd
<Vehicles with sport
mode>

•

Engine: Idling

•

Gear range: 2nd gear

Battery positive voltage

•

Engine: Idling

•

Gear range: other than 2nd gear

0

−

0.9 V

120

Under drive solenoid valve

•

Engine: Idling

•

Selector lever position: L (1st gear)
<Vehicles without sport mode>, Sport
mode (1st gear) <Vehicles with sport
mode>

Battery positive voltage

•

Engine: Idling

•

Selector lever position: P

7

−

9 V

121

Park/Neutral position
switch: N

•

Ignition switch: ON

•

Selector lever position: N

Battery positive voltage

•

Ignition switch: ON

•

Selector lever position: Other than above

0 V

122

Park/Neutral position
switch: 2 <Vehicles without
sport mode>

•

Ignition switch: ON

•

Selector lever operation: 2

Battery positive voltage

•

Ignition switch: ON

•

Selector lever operation: Other than above

0 V

Select switch (Up)
<Vehicles with sport
mode>

•

Ignition switch: ON

•

Selector lever operation: Upshift and hold
the selector lever

Battery positive voltage

•

Ignition switch: ON

•

Selector lever operation: Other than above

0 V

123

Stoplight switch

•

Ignition switch: ON

•

Brake pedal: Depressed

Battery positive voltage

•

Ignition switch: ON

•

Brake pedal: Released

0 V

124

A/T fluid temperature
sensor

A/T fluid temperature: 20

°

C (68

°

F)

3.8

−

4.0 V

A/T fluid temperature: 40

°

C (104

°

F)

3.2

−

3.4 V

A/T fluid temperature: 80

°

C (176

°

F)

1.7

−

1.9 V

128

Shift indicator light: 4th
<Vehicles with sport
mode>

•

Engine: Idling

•

Gear range: 4th gear

Battery positive voltage

•

Engine: Idling

•

Gear range: other than 4th gear

0

−

0.9 V

TERMINAL
NO.

INSPECTION ITEMS

INSPECTION REQUIREMENT

NORMAL CONDITION

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-325

PCM TERMINAL RESISTANCE AND CONTINUITY INSPECTION CHART

M1231013400044

INSPECTION PROCEDURE USING AN OSCILLOSCOPE

M1231008500045

129

Low-reverse solenoid
valve

•

Engine: Idling

•

Selector lever position: P

Battery positive voltage

•

Engine: Idling

•

Selector lever position: 2 (2nd gear)
<Vehicles without sport mode>, Sport
mode (2nd gear) <Vehicles with sport
mode>

7

−

9 V

130

Overdrive solenoid valve

•

Engine: Idling

•

Selector lever position: 3 (3rd gear)
<Vehicles without sport mode>, Sport
mode (3rd gear) <Vehicles with sport
mode>

Battery positive voltage

•

Engine: Idling

•

Selector lever position: P

7

−

9 V

TERMINAL
NO.

INSPECTION ITEMS

INSPECTION REQUIREMENT

NORMAL CONDITION

ACX01978

ACX01978AC

TERMINAL
NO.

INSPECTION ITEM

NORMAL CONDITION (CHECK CONDITION)

57

−

124

A/T fluid temperature sensor

16.7

−

20.5 kW [at 0

°

C (32

°

F)]

7.3

−

8.9 kW [at 20

°

C (68

°

F)]

3.4

−

4.2 kW [at 40

°

C (104

°

F)]

1.9

−

2.2 kW [at 60

°

C (140

°

F)]

1.0

−

1.2 kW [at 80

°

C (176

°

F)]

0.57

−

0.69 kW [at 100

°

C (212

°

F)]

TERMINAL
NO.

INSPECTION ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION
(WAVEFORM
SAMPLE)

45

Crankshaft position
sensor

Selector lever position: N

Idling (Vehicle stopped)

Waveform A

103

Input shaft speed
sensor

Selector lever position: 3
<Vehicles without sport
mode>, Sport mode
<Vehicles with sport
mode>

Driving at constant speed of
50 km/h (31 mph) in 3rd gear
(2.4L Engine: 1,600

−

1,900

r/min, 3.0L Engine: 1,300

−

1,600 r/min)

Waveform B

104

Output shaft speed
sensor

80

Vehicle speed sensor

Waveform C

A/T FAULTY OPERATION PREVENTION MECHANISM DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-326

Waveform sample

A/T FA U LTY O PER ATIO N PREVEN TIO N M EC HA N ISM

DIA G NO SIS

INTRODUCTION TO A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS

M1232001600044

If the key interlock and shift lock mechanisms indicates a malfunction, the key interlock cable, the shift lock
cable or the selector lever assembly may be defective. In this case, follow troubleshooting below.

A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS DIAGNOSTIC TROUBLE
SHOOTING STRATEGY

M1232001700030

Use these steps to plan your diagnostic strategy. If
your follow then carefully, you will be sure that you
have exhausted most of the possible ways to find
Automatic Transaxle key interlock and shift lock
mechanisms fault.
1. Gather information from the customer.

2. Verify that the condition described by the

customer exists.

3. Find the malfunction by follows the Symptom

Chart.

4. Verify malfunction is eliminated.

129

Low-reverse solenoid
valve

•

Ignition switch: ON

•

Selector lever position:
P

•

Engine: Stopped

•

Throttle (Accelerator)
opening angle: Less
than 1 Volt

Force drive each solenoid
valve (Actuator test)

Waveform D

120

Underdrive solenoid
valve

106

Second solenoid valve

130

Overdrive solenoid
valve

107

Torque converter clutch
control solenoid

TERMINAL
NO.

INSPECTION ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION
(WAVEFORM
SAMPLE)

AC001872

Waveform A

AB

(V)

(ms)

AC001873

(V)

(ms)

Waveform B

AB

AC001874AB

Waveform C

(V)

(ms)

AC001875

Waveform D

AB

(V)

(ms)

A/T FAULTY OPERATION PREVENTION MECHANISM DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-327

SYMPTOM CHART

M1232001800093

SYMPTOM PROCEDURES

M1232002000067

INSPECTION PROCEDURE 1: Selector Lever can be Moved from "P" to "R" without Depressing Brake
Pedal when Ignition Key is at Positions other than "LOCK" (OFF).

TECHNICAL DESCRIPTION (COMMENT)

•

Lock cam or shift lock cable may be defective.

TROUBLESHOOTING HINTS

•

Malfunction of lock cam

•

Malfunction of shift lock cable

DIAGNOSIS
Check items described in the column
"Troubleshooting Hints." When the brake pedal is
released with the ignition key at other positions than
"LOCK" (OFF), check that the selector lever can not
be moved from "P" position to "R" position.

M1232002100042

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE

Selector lever can be moved from "P" to "R" without depressing brake
pedal when ignition key is at position other than "LOCK" (OFF).

1

P.23A-328

Selector lever cannot be moved from "P" to "R" with brake pedal
depressed when ignition key is at position other than "LOCK" (OFF).

2

P.23A-328

Selector lever can be moved from "P" to "R" with brake pedal depressed
when ignition key is at "LOCK" (OFF) position.

3

P.23A-329

Selector lever cannot be moved from "P" to "R" smoothly.

4

P.23A-329

Selector lever cannot be moved from "P" to "R".

5

P.23A-329

Ignition key cannot be turned to "LOCK" (OFF) position when selector
lever is at "P" position.

6

P.23A-330

Ignition key can be turned to "LOCK" (OFF) position when selector lever
is at positions other than "P".

7

P.23A-330