Mitsubishi Outlander GS45X. Manual - part 1624

DIAGNOSIS

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CVT

23A-53

STEP 4. Check for open circuit and short to ground in 
wiring harness between the primary pulley speed sensor 
connector and the TCM connector
Between B-126 primary pulley speed sensor connector (termi-
nal No.2) and C-37 TCM connector (terminal No.37)
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Repair the wiring harness.

STEP 5. Check for open circuit in the wiring harness 
between the CVT control relay and the primary pulley 
speed sensor connector.
Between A-18X CVT control relay (terminal No.3) and B-126 
primary pulley speed sensor connector (terminal No.1)
Q: Is the check result normal?

YES : Go to Step 6.
NO :  Repair the wiring harness.

STEP 6. Primary pulley speed sensor check
Visually check the tip of the sensor for foreign materials or 
damage.
Q: Is the check result normal?

YES : Go to Step 7.
NO :  Repair.

STEP 7. Diagnostic trouble code recheck after replacing 
the primary pulley speed sensor
Q: Is the check result normal?

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

DIAGNOSIS

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CVT

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DTC P0720: Malfunction of Secondary Pulley Speed Sensor

RELAY BOX

CVT
CONTROL
RELAY

FUSIBLE
LINK

36

ENGINE
COMPARTMENT

TRANSAXLE
CONTROL MODULE

SECONDARY
PULLEY
SPEED
SENSOR

Secondary pully speed sensor system circuit

DIAGNOSIS

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CVT

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.

DIAGNOSTIC FUNCTION

TCM determines that the malfunction is present 
when the secondary pulley speed sensor value 
changes abruptly or when there is a discrepancy 
between this sensor and other sensors in sensor 
reading.

.

DESCRIPTIONS OF MONITOR METHODS

• The status with the primary pulley speed of 1,000 

r/min or more and with the secondary pulley 
speed of 150 r/min or less continues for 5 sec-
onds.

• When the vehicle speed computed by CVT has 

dropped abruptly from 10 km/h (6.2 mph) or more 
to 5 km/h (3.1 mph) or less, and then the comput-
ing value keeps 5 km/h (3.1 mph) or less for 0.5 
seconds continuously.

.

MONITOR EXECUTION

• Transmission range: D

• Throttle valve opening : 1/8 or more

.

MONITOR EXECUTION CONDITIONS 
(OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• P0705: Malfunction of transmission range switch

• P0712, P0713: Malfunction of the transmission 

fluid temperature sensor

• P0715: Malfunction of primary pulley speed sen-

sor

• P0725: Malfunction of engine speed

• P0741: Abnormality in lockup function

• P0746: Abnormality in hydraulic control system 

function

• P0841: Abnormality in line pressure sensor func-

tion

• P0868: Secondary pressure drop

• P1706: Malfunction of throttle signal

• P1723: Abnormality in speed sensor system 

function

Sensor (The sensor below is determined to be 

normal)

• Transmission range switch

• Transmission fluid temperature sensor

• Primary pulley speed sensor

• Accelerator pedal position sensor

.

AC709490

Connectors: A-12, A-13

AC

A-12

A-13

AC709650

Connector: A-18X

AB

AC709493

AC

Connector: B-124

B-124 (B)

AC703253

Connector: C-37

Brake pedal

AC

DIAGNOSIS

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CVT

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LOGIC FLOW CHARTS (Monitor Sequence)

.

AC802623

START

Yes

Yes

No

Primary pulley speed     1,000 r/min

Secondary pulley speed     150 r/min

Continuous for 5 sec

Continuous for 0.5 sec

No

No

Yes

Good

Malfunction

END

Yes

Yes

Yes

Yes

All secondary parameters
are in the enable condition.

No

No

No

Secondary
pulley speed

Secondary pulley
speed at 10 msec
 before

500 r/min

260 r/min