Mitsubishi Eclipse. Manual - part 777

 

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Mitsubishi Eclipse. Manual - part 777

 

 

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-117

DTC 22 (P0715): Input Shaft Speed Sensor System

AC106630AB

Input Shaft Speed Sensor System Circuit

AC001835

CONNECTOR: B-42

AH

B-42

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-118

.

CIRCUIT OPERATION

• The input shaft speed sensor generates 0 ⇔ 5 

volts pulse signal when the input shaft rotates. 
The pulse signal frequency increases with a rise 
in input shaft speed.

• The input shaft speed sensor is connected to the 

PCM (terminals 16 and 103) via the input shaft 
speed sensor connector (terminals 1 and 2).

• The PCM detects the input shaft speed by the 

signal input to terminal 103.

• The input shaft speed sensor generates the pulse 

signal as the teeth of the underdrive clutch 
retainer pass the magnetic tip of the sensor.

.

AC106611AB

CONNECTOR: C-28

C-28

AC001657

CONNECTORS: C-50 <2.4L ENGINE> OR
C-52 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>

PCM

BG

C-50 <2.4L ENGINE> OR 
C-52 <3.0L ENGINE>

C-61 <2.4L ENGINE> 
OR 
C-63 <3.0L ENGINE>

AC106814AB

CONNECTORS: C-111, C-112

JUNCTION BLOCK
(FRONT VIEW)

C-111

C-112

C-111

C-112

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-119

DESCRIPTIONS OF MONITOR METHODS
If there is no detection pulse from input shaft speed 
sensor (turbine rotation) even during driving test at 
more than specified speed, PCM judges that input 
shaft speed sensor has a failure.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• DTC 23 (P0720): Output shaft speed sensor mal-

function

Sensor (The sensor below is determined to be 

normal)

• Output shaft speed sensor

.

LOGIC FLOW CHARTS (Monitor Sequence)

.

AC205224

N

E

 : 

Engine speed

START

Yes

No

Transmission fluid 
temperature sensor 
voltage < 4.5 V

Transmission range 
switch position is in 
D, 3, 2 or L range

Shift stage is 1st or 2nd
and N

E

 < 2,600 r/min

N

OPG-B

 > 1,000 r/min

Yes

No

Yes

No

Yes

No

Pulses of input shaft speed 
sensor are not inputted

Continuous failure for 4 secs.

Good

Malfunction

END

Yes

No

Yes

No

N

OPG-B 

: Output speed

            (output shaft speed sensor)

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-120

DTC SET CONDITIONS

Check Conditions

• Transmission range switch position: D, 3, 2 or L.

• Output speed: 1,000 r/min or more.

• Transmission fluid temperature sensor voltage: 

4.5 volts or less.

Judgement Criteria

• Input shaft speed sensor signal: no signal 

change. (4 seconds)

• If DTC 22 (P0715) is set consecutively four times, 

the transaxle is locked into 3rd gear or 2nd gear 
as a fail-safe measure, and the "N" range light 
flashes once per second.

.

OBD-II DRIVE CYCLE PATTERN
Start the engine, shift to 3rd gear or higher, and drive 
at 40 km/h (25 mph) or more for 10 seconds.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are:)

• Malfunction of the input shaft speed sensor

• Malfunction of the underdrive clutch retainer

• Damaged harness or connector

• Malfunction of the PCM

DIAGNOSIS

Required Special Tool:

•  MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

STEP 1. Using scan tool MB991958, check data list item 22: 
Input Shaft Speed Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine.
(3) Set scan tool MB991958 to data reading mode for item 22: 

Input Shaft Speed Sensor.

• When driving at constant speed of 50 km/h (31 mph), 

the display should be "1,600 

− 1,900 r/min." <2.4L 

Engine>, "1,300 

− 1,600 r/min." <3.0L Engine> (Gear 

range: 3rd gear)

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-6

.

NO :  Go to Step 2.

AC303127

AB

MB991911

16-PIN

MB991827

MB991824 

 

 

 

 

 

 

 

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