Mitsubishi Outlander GS45X. Manual - part 1686

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-49

DIAGNOSIS

STEP 1. Check the TCM terminal voltage and frequency.
[C-37 TCM connector (vehicle side, connected)]
Check that the voltage between C-37 terminal No. 49 and C-38 
terminal No. 13 or C-38 terminal No. 26 is 0 V, and then check 
the frequency of C-37 terminal No. 38.

• At D range, and the engine speed is 700 r/min: Approx. 353 

Hz

Q: Is the check result normal?

YES : Go to Step 8.
NO :  Go to Step 2.

STEP 2. Check the power supply and sensor ground.
[B-109 input shaft speed sensor connector (vehicle side, dis-
connected)]

• With the ignition switch ON: Terminal No. 3 to terminal No. 1 

→ Battery positive voltage

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Go to Step 4.

STEP 3. Check the wiring harness between the input shaft 
speed sensor and TCM.
Check for continuity between B-109 input shaft speed sensor 
connector terminals and C-37 TCM terminals.
NOTE: Prior to the wiring harness inspection, check the inter-
mediate connectors A-12 and repair that if necessary.

• Between B-109 terminal No. 2 and C-37 terminal No. 38: 

Continuity exists.

When the continuity check result is OK, check that the wiring 
harness is not shorted to the body and other wiring harness.
Q: Is the check result normal?

YES : Replace the input shaft speed sensor with the one of 

the same transaxle of the same model. Then go to 
Step 5.

NO :  Repair or replace the failure section, and then go to 

Step 8.

STEP 4. Check the path between the fusible link No.36 and 
the input shaft speed sensor.

• Check the wiring harness for an open/short circuit between 

the ignition switch and B-109 input shaft speed sensor con-
nector terminal No. 3.

• Check for a blown fuse.

Q: Is the check result normal?

YES : Go to Step 6.
NO :  Repair or replace the failure section.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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STEP 5. After replacing the input shaft speed sensor, drive 
the vehicle for a while, and then check the DTC again.
Q: Is the check result normal?

YES : Replace the input shaft speed sensor.
NO :  Replace the TCM. Then go to Step 9.

STEP 6. Check the wiring harness between the input shaft 
speed sensor and TCM.
Check for continuity between B-109 input shaft speed sensor 
terminals and C-37 TCM terminals.
NOTE: Prior to the wiring harness inspection, check the inter-
mediate connectors A-12 and repair that if necessary.

• Between B-109 terminal No. 1 and C-37 terminal No. 49: 

Continuity exists.

When the continuity check result is OK, check that the wiring 
harness is not shorted to the body and other wiring harness.
Q: Is the check result normal?

YES : Go to Step 7.
NO :  Repair or replace the failure section.

STEP 7. Check the TCM connector pin terminal and the 
connection status.
Q: Is there a failure point?

YES : Repair or replace the failure section.
NO :  Replace the TCM.

STEP 8. Drive the vehicle for a while.
Check that the normal code is displayed.
Q: Is the check result normal?

YES : The procedure is complete.
NO :  Replace the TCM.

STEP 9. Diagnostic trouble code recheck.

1. Erase the diagnostic trouble code.
2. Drive the vehicle at 40 km/h (24.9 mph) or more (engine 

speed at 1,600 r/min or more).

3. Check if the diagnostic trouble code is set.

Q: Is the diagnostic trouble code set?

YES : Remove the A/T. Carry out the internal check and 

repair the defective part (the input shaft speed sensor 
rotor may be defective).

NO :  The procedure is complete.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-51

Code No. P0720: Output Shaft Speed Sensor System

A/T
CONTROL
RELAY

ENGINE
COMPARTMENT

RELAY
BOX

FUSIBLE
LINK

36

OUTPUT SHAFT
SPEED
SENSOR

TRANSMISSION
CONTROL
MODULE

AC903814

Output shaft speed sensor system circuit

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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.

DESCRIPTIONS OF MONITOR METHODS

• With the vehicle speed more than 20 km/h (12.4 

mph), when the vehicle speed is decelerated by 
20 km/h (12.4 mph) or more in 0.05 seconds

.

MONITOR EXECUTION

• Vehicle speed 20 km/h (12.4 mph) or more.

.

MONITOR EXECUTION CONDITIONS 
(OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• P0712: Malfunction of the transmission fluid tem-

perature sensor (Short circuit)

• P0713: Malfunction of the transmission fluid tem-

perature sensor (Open circuit)

• P0731: Malfunction of the 1st gear incorrect ratio

• P0732: Malfunction of the 2nd gear incorrect ratio

• P0733: Malfunction of the 3rd gear incorrect ratio

• P0734: Malfunction of the 4th gear incorrect ratio

• P0735: Malfunction of the 5th gear incorrect ratio

• P0729: Malfunction of the 6th gear incorrect ratio

• P0736: Malfunction of the Reverse gear incorrect 

ratio

• P0742: Malfunction of the Torque converter 

clutch system (Stuck on)

• P0846: Malfunction of the 2-6 brake pressure 

switch system

• P0876: Malfunction of the High clutch pressure 

switch system

• P0988: Malfunction of the Low-reverse brake 

pressure switch system

• P0893: Malfunction of the Interlock detection

• P1705: Malfunction of the Throttle position sen-

sor information (engine)

• P1773: Malfunction of the ABS information (ASC)

Sensor (The sensor below is determined to be 

normal)

• Transmission fluid temperature sensor

.

AC702932

Connectors: A-12, 13

A-12 A-13

AG

AC703255

Connector: A-18X

AB

AC703258

Connector: B-108

B-108 (B)

AC

AC703253

Connectors: C-37, 38

C-38

C-37

Brake pedal

AD