TSB-23-23-001

SUBJECT:
CVT BELT CHECK – SERVICE MANUAL REVISION
No:
TSB-23-23-001
DATE:
January 2023
MODEL:
See below
CIRCULATE TO:
[ ] GENERAL MANAGER
[ X ] PARTS MANAGER
[ X ] TECHNICIAN
[ X ] SERVICE ADVISOR
[ X ] SERVICE MANAGER
[ X ] WARRANTY PROCESSOR
[ ] SALES MANAGER
PURPOSE
This TSB provides the addition of Diagnostic Procedure for CVT Belt Check for vehicles equipped
with CVT type F1CJC and W1CJC.
AFFECTED VEHICLES
•
•
•
•
2016-2017 Lancer
2015-2022 Outlander Sport
2016-2020 Outlander
2018-2020 and 2022 Eclipse Cross
AFFECTED SERVICE MANUAL
•
•
•
•
2016-2017 Lancer/Lancer Sportback* Service Manual, Group 23-CVT
2015-2022 Outlander Sport Service Manual, Group 23-CVT
2016-2020 Outlander Service Manual, Group 23-CVT
2018-2020 and 2022 Eclipse Cross Service Manual, Group 23-CVT
PROCEDURE
Please use the chart on pages 2-3 and add the indicated pages to the affected
Service Manuals, Group 23-CVT - Diagnosis, Special Tools, and On-Vehicle Service .
Copyright 2023, Mitsubishi Motors North America, Inc.
The information contained in this bulletin is subject to change. For the latest version of this document, go to the
Mitsubishi Dealer Link, MEDIC, or the Mitsubishi Service Information website (www.mitsubishitechinfo.com).
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(5245/MSB22M23003)
Applicable manual
2016
LANCER Service
Manual
2017
LANCER Service
Manual
Pub. No.
MSCD-106B-2016
MSCD-106B-2017
2015 OUTLANDER
SPORT Service
Manual
MSCD-017B-2015
2016 OUTLANDER
SPORT Service
Manual
MSCD-017B-2016
2017 OUTLANDER
SPORT Service
Manual
MSCD-017B-2017
2018 OUTLANDER
SPORT Service
Manual
MSCD-017B-2018
2019 OUTLANDER
SPORT Service
Manual
MSCD-017B-2019
2020 OUTLANDER
SPORT Service
Manual
MSCD-017B-2020
2021 OUTLANDER
SPORT Service
Manual
MSCD-017B-2021
2022 OUTLANDER
SPORT Service
Manual
MSCD-017B-2022
12/21/2022
Applicable title (Info)
Contents
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P084A: Abnormality in Primary Pressure Sensor Function
CVT
└ DIAGNOSIS
└ TROUBLE SYMPTOM DIAGNOSIS CHART
CVT
└ SPECIAL TOOLS
CVT
└ ON-VEHICLE SERVICE
└ Added below “SHIFT LOCK MECHANISM CHECK”
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function
Attached
sheet 1
Attached
sheet 2
Attached
sheet 3
Attached
sheet 4
Attached
sheet 5
Attached
sheet 1
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P084A: Abnormality in Primary Pressure Sensor Function
Attached
sheet 2
CVT
└ DIAGNOSIS
└ TROUBLE SYMPTOM DIAGNOSIS CHART
Attached
sheet 3
CVT
└ SPECIAL TOOLS
Attached
sheet 4
CVT
└ ON-VEHICLE SERVICE
└ Added below “SHIFT LOCK MECHANISM CHECK”
Attached
sheet 5
2 of 17
(5245/MSB22M23003)
Applicable manual
Pub. No.
2016
OUTLANDER
Service Manual
MSCD-007B-2016
2017
OUTLANDER
Service Manual
MSCD-007B-2017
2018
OUTLANDER
Service Manual
MSCD-007B-2018
2019
OUTLANDER
Service Manual
MSCD-007B-2019
2020
OUTLANDER
Service Manual
MSCD-007B-2020
Applicable manual
Pub. No.
Applicable title (Info)
Contents
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P084A: Abnormality in Primary Pressure Sensor Function
CVT
└ DIAGNOSIS
└ TROUBLE SYMPTOM DIAGNOSIS CHART
Attached
sheet 1
Attached
sheet 2
Attached
sheet 3
CVT
└ SPECIAL TOOLS
Attached
sheet 4
CVT
└ ON-VEHICLE SERVICE
└ Added below “SHIFT LOCK MECHANISM CHECK”
Attached
sheet 5
Applicable title (Info-ID/SIE No.)
Contents
2018 ECLIPSE
CROSS Service
Manual
MSCD-020B-2018
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
2019 ECLIPSE
CROSS Service
Manual
MSCD-020B-2019
2020 ECLIPSE
CROSS Service
Manual
MSCD-020B-2020
2022 ECLIPSE
CROSS Service
Manual
MSCD-020B-2022
CVT
└ DIAGNOSIS
└ DIAGNOSTIC TROUBLE CODE CHART
└ DTC P084A: Abnormality in Primary Pressure Sensor Function
CVT
└ DIAGNOSIS
└ TROUBLE SYMPTOM DIAGNOSIS CHART
CVT
└ SPECIAL TOOLS
CVT
└ ON-VEHICLE SERVICE
└ Added below “SHIFT LOCK MECHANISM CHECK”
Attached
sheet 1
└ DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function
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Attached
sheet 2
Attached
sheet 3
Attached
sheet 4
Attached
sheet 5
CVT
DIAGNOSIS 
Attached sheet 1 (1/5)
DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function
DIAGNOSTIC FUNCTION
TCM conducts fault detection by measuring the difference between the target value and the actual
value for the secondary pressure.
DESCRIPTIONS OF MONITOR METHODS
The following three conditions are met for 10 seconds.
• The engine is running.
• Selector lever position: Other than P, N.
• Fluid temperature: More than -20°C (-4°F).
• Difference between the target secondary pressure and actual secondary pressure is 1.2 MPa
(174 psi) or more.
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MONITOR EXECUTION
• Voltage of battery: 10 volts or more.
MONITOR EXECUTION CONDITIONS
(OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
(5245/MSB22M23003)
Attached sheet 1 (2/5)
CVT
DIAGNOSIS 
LOGIC FLOW CHARTS (Monitor Sequence-Output Functional High)
START
No
All secondary parameters
are in the enable condition.
YYes
Actual secondary pressure Target secondary pressure
> 1.2 MPa (174 psi)
No
YYes
No
Continuous failure
for 15 sec
YYes
Malfunction
Good
END
BCC07002AA
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Attached sheet 1 (3/5)
CVT
DIAGNOSIS 
LOGIC FLOW CHARTS (Monitor Sequence-Output Functional Low)
START
All secondary
parameters for steady state are
in the enable condition.
No
YYes
No
All secondary
parameters for transient state are
in the enable condition.
YYes
Target secondary pressure Actual secondary pressure
> 1.2 MPa (174 psi)
No
YYes
Target secondary pressure Actual secondary pressure
> 1.2 MPa (174 psi)
No
Continuous failure
for 10 sec
No
YYes
YYes
No
Continuous failure
for 10 sec
YYes
Malfunction
(Steady state)
Malfunction
(Transient state)
Good
END
BCD04219AA
DTC SET CONDITIONS
• Engine speed: 450 r/min or more.
• Target secondary pressure: 0 MPa (0 psi) or
more.
• Time since following conditions are approved:
More than 1.52 seconds [2 times (Interval: 30
second)].
a. Target secondary pressure - Actual secondary pressure: 0.25 MPa (36 psi) or more.
Check Conditions 

• Voltage of battery: 10 volts or more.
• Transmission range switch position: D or R.
Check Conditions 

• Voltage of battery: 10 volts or more.
• Transmission range switch position: D or R.
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CVT
DIAGNOSIS 
b. Actual secondary pressure: Less than minimum line pressure.
c. Accelerator pedal position change rate:
6.25% / 1.52 seconds or less.
d. Vehicle speed change rate: 15 km/h (9 mph) /
1.52 seconds or less.
Check Conditions 

• Voltage of battery: 10 volts or more.
• Transmission range switch position: D or R.
• Engine speed: 450 r/min or more.
• Target secondary pressure: 0 MPa (0 psi) or
more.
• Time since following conditions are approved:
More than 1 seconds.
a. MIN [(Target secondary pressure - Actual secondary pressure), (Minimum line pressure Actual secondary pressure)]: 2 MPa (290 psi)
or more.
Judgment Criteria 

• Actual secondary pressure - Target secondary
pressure: More than 1.2 MPa (174 psi) (15 seconds).
Attached sheet 1 (4/5)
Judgment Criteria 

• Target secondary pressure - Actual secondary
pressure: More than 1.2 MPa (174 psi) (10 seconds).
Judgment Criteria 

• Target secondary pressure - Actual secondary
pressure: More than 1.2 MPa (174 psi) (10 seconds).
OBD-II DRIVE CYCLE PATTERN
The vehicle is driven for at least 10 seconds with the
accelerator opening angle at 20% or more.
PROBABLE CAUSES
• Malfunction of valve body assembly (Faulty secondary pressure solenoid valve)
• Malfunction of the CVT assembly
• Malfunction of the TCM
DIAGNOSIS
Required Special Tools:
• MB992006: Extra fine probe
• MQ600069: Bore Scope
STEP 1. Scan tool (M.U.T.-IIISE) DTC.
Q: Is diagnostic trouble code No. P0966 or P0967 set?
YES : Carry out the appropriate troubleshooting.
NO : Go to Step 2.
STEP 2. Measure the output wave pattern of the secondary
pressure solenoid valve at TCM connector (SCLS
terminal).
(1) Connect the CVT assembly connector.
(2) Selector lever position: L range or sport mode (1st gear).
(3) Drive at a constant speed of approx. 20 km/h (13 mph).
(4) Connect an oscilloscope, and measure the voltage between
TCM connector SCLS terminal and body ground.
OK: A wave pattern such as the one shown on
(Check Procedure Using an Oscilloscope) should
be output. There should be no noise in the output
wave pattern.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Refer to diagnostic trouble code No.P0966:
Malfunction of Secondary Pressure Solenoid Valve
(low input), or diagnostic trouble code No.P0967:
Malfunction of Secondary Pressure Solenoid Valve
(high input).
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CVT
DIAGNOSIS 
Attached sheet 1 (5/5)
STEP 3. CVT belt inspection.
Use the special tool bore scope (MQ600069) to check the
appearance (Slip marks, the presence or absence of
damage) of the CVT belt (Refer to Attached sheet 11).
Q: Is the CVT belt normal?
YES : Replace the valve body assembly. Then go to Step 4.
NO : Replace the CVT assembly.
STEP 4. Check whether the DTC is stored again.
Erase the DTC.
Then, drive the vehicle for a while and check again.
Q: Is the diagnostic trouble code set?
YES : Replace the TCM.
NO : This diagnosis is complete.
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CVT
DIAGNOSIS 
Attached sheet 2 (1/3)
DTC P084A: Abnormality in Primary Pressure Sensor Function
DIAGNOSTIC FUNCTION
The TCM determines that the system is defective
when the primary pressure sensor output voltage is
outside the predetermined value range.
DESCRIPTIONS OF MONITOR METHODS
All the conditions listed below remain for 5 seconds.
• The pulley ratio is 0.5 or more, 1.0 or less.
• The primary pulley speed is 300 r/min or more.
• The secondary pulley speed is 250 r/min or more.
• Target shifting speed is 0.1/sec or less.
• The primary pressure is outside the predetermined pressure range.
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MONITOR EXECUTION
• Voltage of battery: 10 volts or more.
MONITOR EXECUTION CONDITIONS
(OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• P0966, P0967: Malfunction of secondary pressure solenoid valve
• P0970, P0971: Malfunction of primary pressure
solenoid valve
Sensor (The sensor below is determined to be
normal)
• Not applicable
(5245/MSB22M23003)
Attached sheet 2 (2/3)
CVT
DIAGNOSIS 
LOGIC FLOW CHARTS (Monitor Sequence)
START
No
All secondary parameters
are in the enable condition.
YYes
No
Check of "Actual primary fluid pressure" and
"Actual secondary fluid pressure" is error*
YYes
No
Continuous failure for 5 sec
Yes
Malfunction
Good
END
NOTE: *:
6 (3.7)
Actual primary
pressure
MPa (psi)
5 (3.1)
Error
4 (2.5)
3 (1.9)
Good
2 (1.2)
1 (0.6)
0 (0)
Error
1 (0.6)
2 (1.2)
3 (1.9)
4 (2.5)
5 (3.1)
6 (3.7)
Actual secondary pressure MPa (psi)
ACD04282
DTC SET CONDITIONS
Check Conditions
• Voltage of battery: 10 volts or more.
• Primary pulley speed: 300 r/min or more.
• Secondary pulley speed: 250 r/min or more.
• Pulley ratio: More than 0.5, less than 1.0.
12/21/2022
Judgment Criteria
• Check of "Actual primary pressure" and "Actual
secondary pressure" is error. (5 seconds).
OBD-II DRIVE CYCLE PATTERN
Ignition switch: ON (start the engine and keep it for
10 seconds or more).
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CVT
DIAGNOSIS 
PROBABLE CAUSES
• Malfunction of valve body assembly (Faulty primary pressure sensor, secondary pressure sensor)
Attached sheet 2 (3/3)
• Damaged wiring harness and connectors
• Malfunction of the CVT assembly
• Malfunction of the TCM
DIAGNOSIS
Required Special Tool:
• MQ600069: Bore Scope
STEP 1. Scan tool (M.U.T.-IIISE) DTC.
Q: Is diagnostic trouble code No. P0842, P0843, P0847 or
P0848 set?
YES : Carry out the appropriate troubleshooting.
NO : Go to Step 2.
STEP 2. CVT belt inspection
Use the special tool bore scope (MQ600069) to check the
appearance (Slip marks, the presence or absence of
damage) of the CVT belt (Refer to Attached sheet 11).
Q: Is the CVT belt normal?
YES : Replace the valve body assembly. Then go to Step 3.
NO : Replace the CVT assembly.
STEP 3.Check whether the DTC is stored again
Erase the DTC.
Then, drive the vehicle for a while and check again.
Q: Is the diagnostic trouble code set?
YES : Replace the TCM.
NO : This diagnosis is complete.
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CVT
DIAGNOSIS 
Attached sheet 3
TROUBLE SYMPTOM DIAGNOSIS CHART
Diagnose the system by referring to the trouble
symptom chart and the possible cause chart. Then
check, repair or replace if necessary.
Trouble symptom chart
NOTE: Diagnose the system in the order of "Possible cause No.".
Trouble symptom
Possible cause No.
Others
2  1  3  18
Malfunction of hesitation or poor acceleration
Possible cause chart
Possible
cause No.
Probable cause
Remedy
1
Malfunction of the engine system
Check the engine system, and repair or replace if
necessary.
2
Improper transmission fluid level
Check the transmission fluid, and repair or replace if
necessary.
3
Not within the standard value of the line pressure
Check the hydraulic system, and repair or replace if
necessary.
18
Malfunction of the CVT belt
Visually inspection of CVT belt
(Refer to Attached sheet 11).
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Attached sheet 4
CVT
SPECIAL TOOLS
SPECIAL TOOL
Tool
Tool number and
name
Supersession
Application
MQ600069
Bore scope
-
Check of the CVT belt
MQ600069
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CVT
ON-VEHICLE SERVICE
Attached sheet 5 (1/4)
CVT BELT INSPECTION
Required Special Tool:
 MQ600069: Bore Scope
Belt
Pulley
Pulley
MQ600069
Visually inspect all around of the both pulley mating surfaces of
the belt (flanks surfaces of belt elements) using the special tool
bore scope (MQ600069) camera with a 90 degree viewing mirror.
1. Place the vehicle on a lift, put gear in "N".
2. Turn the ignition switch to the "LOCK" (OFF) position.
3. Disconnect the negative (-) battery terminal.
4. Raise the vehicle. Make sure gear is in "N" prior to raising
the vehicle.
BCI02134AA
Belt element
Belt ring
Belt element
ACI02135 AB
5. Tie the front right tire and any vehicle member with a rope
not to rotate the wheel.
CAUTION
ACI02129
Viewing mirror
Marking
Check the CVT fluid and the inside of the oil pan. If a large
metal chip is found, abort the operation and replace the
CVT assembly (Refer to GROUP 23A - Transaxle assembly).
6. Remove the valve body assembly (Refer to GROUP 23A Oil pan and Valve body assembly).
7. Check the engine side (right side of the vehicle) of the flanks
of belt elements according to the procedure below.
(1) With the 90 degree viewing mirror, which is provided with
the special tool bore scope (MQ600069), attached to the
special tool bore scope (MQ600069), put a mark on the
position shown in the figure.
Approx. 180 mm (7.1 in)
BCI02139AA
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CVT
ON-VEHICLE SERVICE
Attached sheet 5 (2/4)
CAUTION
Clean so that foreign matter does not adhere to the insertion portion of the special tool bore scope (MQ600069)
camera.
(2) Insert the special tool bore scope (MQ600069) into the
Transaxle case from the position shown in the figure until
the mark [approximately 180 mm (7.1 inches)] on the
special tool bore scope comes to the end of the
Transaxle case, while making sure that the 90 degree
viewing mirror is facing toward the left side of the vehicle.
Engine side
Marking
BCI02138AA
(3) Adjust the position of the 90 degree viewing mirror of the
special tool bore scope (MQ600069) so that the side face
of the belt element (the right side of the vehicle) can be
seen.
(4) Make a mark on a side wall of the front left tire to
recognize one round of rotation.
Vehicle
front
Approx.
180 mm
(7.1 in)
Marking
BCKA5480AA
ACI02299
12/21/2022
CAUTION
 Make sure the front right tire is fixed by a rope not to
rotate.
 Rotate the tire in the forward rotation only. If the tire is
rotated in the backward rotation, the special tool bore
scope (MQ600069) camera lens may get caught
between the belt and pulley.
(5) Slowly rotate the front left tire entire one round to rotate
the belt to inspect all around of the belt element flanks
surfaces.
NOTE: Rotate the tire as slow as each belt element flank
can be carefully inspected if any evidence of damage
presented or not, or pose the rotation periodically such as
every 9 - 10 elements movement on a camera view, and
inspect, and then move to next 9 - 10 elements to
inspect.
8. Refer to the OK samples and the damage samples below to
determine the condition of the flanks (grooved surfaces) of
belt elements. When a damage is found on the flanks of the
belt elements, replace the CVT assembly (Refer to GROUP
23A - Transaxle assembly).
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CVT
ON-VEHICLE SERVICE
Attached sheet 5 (3/4)

• No damage is observed on flanks (grooved surfaces) of belt
elements.
Layers of belt
rings
(Not elements)
Flank
of belt
element
ACI02142 AB
Layers of belt
rings
(Not elements)
Flank
of belt
element
ACI02143 AB
Layers of belt
rings
(Not elements)

 Damages to grooves are observed on flanks of belt elements.
Flank
of belt
element
ACI02144 AB
Layers of belt
rings
(Not elements)
Flank
of belt
element
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ACI02145 AB
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CVT
ON-VEHICLE SERVICE
ACI02140
ACI02141
12/21/2022
Attached sheet 5 (4/4)
9. When the check result of the engine side (right side of the
vehicle) of the flanks of the belt elements is normal, check
the Transaxle side cover side (left side of the vehicle) of the
flanks of the belt elements.
10.When a damage is found on the flanks of the belt elements,
replace the CVT assembly (Refer to GROUP 23A Transaxle assembly). When there is no problem, the
inspection is complete.
11.Install the valve body assembly (Refer to GROUP 23A - Oil
Pan and Valve Body assembly).
NOTE: If the CVT belt was checked by diagnosis (DTC
P0776, P084A), replace the valve body assembly.
12.Remove the rope which tying the front right tire and vehicle
member.
13.Connect the negative (-) battery terminal.
14.When the valve body assembly is replaced, carry out the
following operations.
 Initialization Procedure for CVT Learned Value (Refer to
GROUP 23A - Diagnosis  - Initialization Procedure
for CVT Learned Value).
 Learning Procedure (Refer to GROUP 23A - Diagnosis
 - Learning Procedure).
15.Test drive the vehicle.
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