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CVT System Symptom Troubleshooting Index (CVT)

NOTE: Do an all DTC check with the HDS, and troubleshoot any DTCs first before following the repair procedures listed in the index.

Symptom	Probable cause(s)	Notes
With the vehicle in the ON mode, the shift position indicator displays an improper indication, or it never displays at all	F-CAN communication circuit Gauge control module defective TCM defective Transmission range switch defective or out of adjustment Transmission range switch circuit Shift cable broken or out of adjustment Control pin broken Control shaft, roller, detent lever, and detent spring worn or damaged	Check the F-CAN communication line by using the gauge control module self-diagnostic function . Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever .
Shift lever cannot be moved from P position/mode while pressing on the brake pedal	Shift lock solenoid defective Shift lock solenoid control circuit Shift lock mechanism defective Transmission range switch defective Transmission range switch circuit Brake pedal position switch circuit Brake pedal position switch defective Accelerator pedal position sensor circuit Accelerator pedal position sensor defective Throttle body defective	Test the shift lock solenoid . Troubleshoot the shift lock system circuit . Inspect the transmission range switch . Inspect the APP sensor signal . Check the throttle body - Refer to: Fuel and Emissions Systems Component Location Index (M/T, Type-S) (2024 2025) or Fuel and Emissions Systems Component Location Index (CVT) .
When you press the paddle shifter, the transmission does not upshift/downshift	A problem in the paddle shifter circuit Paddle shifter detective TCM defective	Troubleshoot the paddle shifter circuit . Test the paddle shifter .
M indicator does not come on even though the paddle shifter is operated in the sequential sportshift mode	F-CAN communication circuit Gauge control module defective TCM defective	Check the F-CAN communication line by using the gauge control module self-diagnostic function .
HDS does not communicate with the TCM	DLC circuit error TCM defective	Symptom troubleshooting (HDS does not communicate with the vehicle) - Refer to: TROUBLESHOOTING . Symptom troubleshooting (HDS does not communicate with the TCM) .
Engine does not start	Shift cable broken or out of adjustment Control pin broken Transmission range switch defective or out of adjustment Drive plate worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check for a loose shift cable at the shift lever and the control lever . Inspect the transmission range switch .

Symptom	Probable cause(s)	Notes
Engine runs, but vehicle does not move in any positions/modes	Low transmission fluid (HCF-2) level Transmission range switch defective or out of adjustment Engine output low Transmission fluid strainer or CVTF warmer strainer clogged Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Input shaft assembly worn or damaged Secondary drive/driven gear worn or damaged Final driven gear worn or damaged Sun gear worn or damaged Control shaft, roller, detent lever, and detent spring worn or damaged Control lever worn or damaged Parking brake pawl and parking shaft worn or damaged Manual valve worn or damaged Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Transmission fluid pump drive chain or transmission fluid pump drive/driven sprocket worn or damaged Valve body assembly defective Joint pipes defective Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check the transmission fluid (HCF-2) level . Inspect the transmission range switch .
Vehicle does not move in D or S positions/modes	Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Engine output low Forward clutch defective Reverse brake piston defective Sun gear worn or damaged Manual valve worn or damaged Valve body assembly defective Stator shaft worn or damaged	Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever . Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .

Symptom	Probable cause(s)	Notes
Vehicle does not move in R position/mode	Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Reverse brake defective Reverse brake piston defective Planetary carrier assembly worn or damaged Sun gear worn or damaged Ring gear worn or damaged Thrust needle bearing or thrust washer on planetary carrier assembly seized, worn, or damaged Manual valve worn or damaged Valve body assembly defective Stator shaft worn or damaged	Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever . Inspect the clearance between the reverse brake end-plate and the top disc .
Engine stalls when shifted to D position/mode from N position/mode	Engine output low Reverse brake defective Reverse brake piston defective Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Inspect the clearance between the reverse brake end-plate and the top disc .
Engine stalls when shifted to R position/mode from N position/mode	Engine output low Forward clutch defective Planetary carrier assembly worn or damaged Thrust needle bearing or thrust washer on planetary carrier assembly seized, worn, or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Inspect the clearance between the forward clutch end-plate and the top disc .
No shift to higher or lower ratio	TCM defective Low transmission fluid (HCF-2) level Transmission fluid strainer or CVTF warmer strainer clogged Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Solenoid wire harness worn or damaged Stator shaft worn or damaged	Check the transmission fluid (HCF-2) level .

Symptom	Probable cause(s)	Notes
Poor acceleration	TCM defective CVT drive pulley speed sensor defective Engine output low Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Joint pipes defective Solenoid wire harness worn or damaged Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective
Engine revs up abnormally high while driving, and no acceleration	TCM defective Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Forward clutch defective Reverse brake defective Reverse brake piston defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Transmission fluid pump drive chain or transmission fluid pump drive/driven sprocket worn or damaged Valve body assembly defective Joint pipes defective Solenoid wire harness worn or damaged Stator shaft worn or damaged	Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .

Symptom	Probable cause(s)	Notes
Excessive shock when accelerating and decelerating	TCM defective Low transmission fluid (HCF-2) level Transmission fluid (HCF-2) deteriorated Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Forward clutch defective Reverse brake defective Reverse brake piston defective Valve body assembly defective Joint pipes defective Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check the transmission fluid (HCF-2) level . Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
No engine braking	TCM defective Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Valve body assembly defective Joint pipes defective Solenoid wire harness worn or damaged Stator shaft worn or damaged
Vehicle does not creep on a flat road in D or S positions/modes	TCM defective CVT drive pulley speed sensor defective Engine output low Low transmission fluid (HCF-2) level Transmission fluid strainer or CVTF warmer strainer clogged Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Joint pipes defective Solenoid wire harness worn or damaged Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check the transmission fluid (HCF-2) level .

Symptom	Probable cause(s)	Notes
Vehicle moves in N position/mode, shift cable is properly adjusted	Forward clutch defective Reverse brake defective Reverse brake piston defective Spring retainer/return spring assembly defective Thrust needle bearing on input shaft assembly seized, worn, or damaged Manual valve worn or damaged Stator shaft worn or damaged	Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
Late shift after shifting to D position/mode from N position/mode, and return to N position/mode	TCM defective Torque converter turbine speed sensor defective Low transmission fluid (HCF-2) level Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Transmission fluid strainer or CVTF warmer strainer clogged Forward clutch defective Manual valve worn or damaged Valve body assembly defective Joint pipes defective Stator shaft worn or damaged	Check the transmission fluid (HCF-2) level . Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever . Inspect the clearance between the forward clutch end-plate and the top disc .
Late shift after shifting to R position/mode from N position/mode, and return to N position/mode	TCM defective Torque converter turbine speed sensor defective Low transmission fluid (HCF-2) level Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Transmission fluid strainer or CVTF warmer strainer clogged Reverse brake defective Reverse brake piston defective Manual valve worn or damaged Valve body assembly defective Joint pipes defective Stator shaft worn or damaged	Check the transmission fluid (HCF-2) level . Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever . Inspect the clearance between the reverse brake end-plate and the top disc .

Symptom	Probable cause(s)	Notes
Unstable engine speed	TCM defective Low transmission fluid (HCF-2) level Transmission fluid (HCF-2) deteriorated Transmission fluid strainer or CVTF warmer strainer clogged Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Pulley pressure feed pipe defective Forward clutch defective Reverse brake defective CVT drive pulley pressure control solenoid valve defective CVT driven pulley pressure control solenoid valve defective CVT clutch pressure control solenoid valve defective CVT lock-up clutch control solenoid valve defective Shift solenoid valve B defective Shift solenoid valve O/P defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Joint pipes defective Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check the transmission fluid (HCF-2) level . Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc . Inspect the CVT solenoid valve .
Excessive shock when starting off	TCM defective Low transmission fluid (HCF-2) level Transmission fluid (HCF-2) deteriorated Transmission fluid strainer or CVTF warmer strainer clogged Pulley pressure feed pipe defective Forward clutch defective Reverse brake defective Reverse brake piston defective Valve body assembly defective Joint pipes defective	Check the transmission fluid (HCF-2) level . Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
Vibration in all positions/modes	Engine output low Input shaft assembly worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective

Symptom	Probable cause(s)	Notes
Excessive idle vibration in R, D, or S positions/modes	TCM defective Engine output low Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Forward clutch defective Input shaft assembly worn or damaged Reverse brake defective Reverse brake piston defective Thrust washer on planetary carrier assembly seized, worn, or damaged Valve body assembly defective Joint pipes defective Solenoid wire harness worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
Excessive idle vibration in N and P positions/modes	TCM defective Engine output low Forward clutch defective Input shaft assembly worn or damaged Reverse brake defective Reverse brake piston defective Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
Noise from transmission in N and P positions/modes	Forward clutch defective Input shaft assembly worn or damaged Reverse brake defective Reverse brake piston defective Thrust needle bearing or thrust shim on input shaft assembly seized, worn, or damaged Planetary carrier assembly worn or damaged Sun gear worn or damaged Ring gear worn or damaged Thrust needle bearing or thrust washer on planetary carrier assembly seized, worn, or damaged Transmission fluid pump worn, binding, or foreign material in transmission fluid pump	Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .

Symptom	Probable cause(s)	Notes
Noise from transmission in D or S positions/modes	Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Input shaft assembly worn or damaged Secondary drive/driven gear worn or damaged Final driven gear worn or damaged Control shaft, roller, detent lever, and detent spring worn or damaged Parking brake pawl and parking shaft worn or damaged Parking pawl spring worn or damaged
Noise from transmission in R position/mode	Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Input shaft assembly worn or damaged Reverse brake defective Reverse brake piston defective Spring retainer/return spring assembly defective Secondary drive/driven gear worn or damaged Final driven gear worn or damaged Thrust needle bearing or thrust shim on input shaft assembly seized, worn, or damaged Planetary carrier assembly worn or damaged Sun gear worn or damaged Ring gear worn or damaged Thrust needle bearing or thrust washer on planetary carrier assembly seized, worn, or damaged Control shaft, roller, detent lever, and detent spring worn or damaged Parking brake pawl and parking shaft worn or damaged Parking pawl spring worn or damaged	Inspect the clearance between the reverse brake end-plate and the top disc .

Symptom	Probable cause(s)	Notes
Stall speed high	TCM defective Low transmission fluid (HCF-2) level Transmission fluid (HCF-2) deteriorated Forward clutch defective Input shaft assembly worn or damaged Reverse brake defective Reverse brake piston defective Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Joint pipes defective Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective	Check the transmission fluid (HCF-2) level . Inspect the clearance between the forward clutch end-plate and the top disc . Inspect the clearance between the reverse brake end-plate and the top disc .
Stall speed low	TCM defective Engine output low Valve body assembly defective Joint pipes defective Stator shaft worn or damaged Torque converter assembly defective Torque converter ring gear worn or damaged Transmission assembly and drive plate installation defective
Judder when starting off	Low transmission fluid (HCF-2) level Transmission fluid (HCF-2) deteriorated Transmission fluid strainer or CVTF warmer strainer clogged Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Valve body assembly defective Joint pipes defective	Check the transmission fluid (HCF-2) level .
Shift lever does not operate smoothly	Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Control shaft, roller, detent lever, and detent spring worn or damaged Control lever worn or damaged Parking brake pawl and parking shaft worn or damaged Manual valve worn or damaged Stator shaft worn or damaged	Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever .

Symptom	Probable cause(s)	Notes
Transmission will not shift into P position/mode, or transmission cannot shift out of P position/mode	TCM defective Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged Transmission range switch defective or out of adjustment Shift cable broken or out of adjustment Control pin broken Control shaft, roller, detent lever, and detent spring worn or damaged Control lever worn or damaged Parking brake pawl and parking shaft worn or damaged Park gear worn or damaged Parking pawl spring worn or damaged Manual valve worn or damaged Valve body assembly defective Stator shaft worn or damaged	Inspect the transmission range switch . Check for a loose shift cable at the shift lever and the control lever .
Torque converter clutch does not disengage; engine stalls easily	Shift solenoid valve B defective CVT lock-up clutch control solenoid valve defective Torque converter clutch piston defective Valve body assembly defective	Inspect shift solenoid valve B . Inspect the CVT lock-up clutch control solenoid valve .