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Gear Unit Control System Symptom Troubleshooting Index

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	Gauge control module defective SBW shifter control module defective PCM defective	Check the F-CAN communication line by using the gauge control module self-diagnostic function . Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function .
Shift position indicator does not indicate at all	Gauge control module defective SBW shifter control module defective PCM defective	Check the F-CAN communication line by using the gauge control module self-diagnostic function . Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function .
The paddle shifters do not operate even though the paddle shifter is operated in D position/mode	A problem in the paddle shifter circuit Paddle shifter defective PCM defective	Troubleshoot the paddle shifter circuit . Test the paddle shifter .
HDS does not communicate with the PCM	DLC circuit error PCM defective	Troubleshooting the DLC circuit .

Symptom	Probable cause (s)	Notes
Vehicle in READY TO DRIVE mode, but vehicle does not move in any gear	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Foreign material in traction motor Foreign material in PCU 3-phase connectors Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Generator motor position sensor not learned Park pawl actuator defective Park pawl actuator driver unit defective Park position sensor defective SBW shifter control module defective Transmission assembly and drive plate installation defective Countershaft worn or damaged Motor shaft worn or damaged Final gears worn or damaged Thrust washer seized, worn, or damaged Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective ATF cooler clogged Axle disengaged	Check for an incorrectly installed transmission, and check the drive plate for wear and damage. Replace the drive plate if it is worn or damaged. Inspect the countershaft for wear and damage. Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Inspect the final gears for wear and damage. Check the thrust washer for seizure, wear, and damage. Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier. Check the ATF cooler. Check the axles. Check the park position sensor. Inspect the park mechanism and the park pawl actuator. Check the SBW shifter control module. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Vehicle does not move in D position/mode	Traction motor position sensor defective Traction motor position sensor line failure Traction motor sensor harness failure	Inspect the motor shaft for wear and damage. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Replace the transmission (e-CVT) .
Vehicle does not move in R position/mode	Traction motor position sensor defective Traction motor position sensor line failure Traction motor sensor harness failure	Inspect the motor shaft for wear and damage. Check the motor position sensor harness for poor connections, loose terminals, wear, or damage. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Poor acceleration	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Transmission fluid temperature sensor Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Traction motor stator temperature high Traction motor rotor temperature high Traction motor position sensor not learned Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Generator motor stator temperature high Generator motor position sensor not learned Engine output low Low ATF level ATF pump worn or binding Main regulator valve stuck or spring worn Foreign material in separator plate orifice Cooler relief valve defective ATF strainer clogged ATF cooler clogged	Check the engine control system. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Check the ATF pump drive gears for wear and damage. Replace the valve body assembly . Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Check the ATF cooler. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Engine vibrates under all driving conditions	Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Engine output low Clutch defective Clearance between clutch end-plate and top disc incorrect	Check the engine control system. Inspect the generator shaft for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, replace the clutch. Replace the transmission (e-CVT) .
Vehicle moves in N position/mode	Excessive ATF Relief valve defective Clutch defective Clearance between clutch end-plate and top disc incorrect	Check the ATF level. If the level is above the upper level, drain the ATF if it is over-filled. Replace the valve body assembly . Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, replace the clutch.

Symptom

Probable cause (s)

Notes

Vehicle does not recharge from generator motor

Foreign material in traction motor
Foreign material in PCU 3-phase connectors
Generator motor defective: worn or damaged:
- Stator
- Rotor
- Position sensor
- Position sensor line
- Terminal plate
- 3-phase wires
Generator motor defective; faulty installations:
- Stator
- Position sensor
- Terminals
- 3-phase wire terminals

Countershaft worn or damaged
Motor shaft worn or damaged
Thrust washer seized, worn, or damaged
Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective
Park mechanism defective

Inspect the generator shaft for wear and damage.
Inspect the countershaft for wear and damage.
Inspect the motor shaft for wear and damage.
Check the thrust washers for seizure, wear and damage.
Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier.
Inspect the park mechanism and the park pawl actuator.
Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Vehicle does not recharge from motor regenerative system	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Foreign material in traction motor Foreign material in PCU 3-phase connectors Countershaft worn or damaged Motor shaft worn or damaged Final gears worn or damaged Thrust washer seized, worn, or damaged Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective	Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Inspect the countershaft for wear and damage. Inspect the motor shaft for wear and damage. Check the final gears for wear and damage. Check the thrust washers for seizure, wear and damage. Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Excessive shock when changing from hybrid drive mode to engine drive mode	Traction motor position sensor defective Traction motor position sensor line failure Transmission fluid temperature sensor defective Traction motor sensor harness failure Traction motor position sensor failed to install Generator motor position sensor defective Generator motor position sensor line failure Generator motor position sensor failed to install Shift solenoid valve A defective Shift solenoid valve B defective Transmission fluid pressure sensor defective Engine output low Low ATF level ATF pump worn or binding Main regulator valve stuck or spring worn Foreign material in separator plate orifice Shift valve A defective Shift valve B defective Accumulator defective Input shaft worn or damaged Over drive gears worn or damaged	Check the engine control system. Inspect the shift solenoid valve function with the HDS. Check for a seized shift solenoid valve, and inspect the O-rings. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the ATF pump drive gears for wear and damage. Check the transmission fluid pressure sensor sensor. Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice. Replace the valve body assembly . Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Inspect the input shaft for wear and damage. Check the over drive gears for wear and damage. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Excessive shock when changing from engine drive mode to hybrid drive mode	Traction motor position sensor defective Traction motor position sensor line failure Transmission fluid temperature sensor defective Traction motor sensor harness failure Traction motor position sensor failed to install Generator motor position sensor defective Generator motor position sensor line failure Generator motor position sensor failed to install Low ATF level ATF pump worn or binding Main regulator valve stuck or spring worn Foreign material in separator plate orifice Relief valve defective ATF strainer clogged Clutch defective Clearance between clutch end-plate and top disc incorrect	Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Check the ATF pump drive gears for wear and damage. Replace the valve body assembly . Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, replace the clutch. Replace the transmission (e-CVT) .
Excessive shock when changing from EV drive mode to hybrid drive mode	Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Generator motor stator temperature high Generator motor position sensor not learned Flywheel defective Input shaft worn or damaged Generator shaft worn or damaged Torque limiter defective	Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Inspect the input shaft for wear and damage. Inspect the generator shaft for wear and damage. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Excessive shock when changing from hybrid drive mode to EV drive mode	Flywheel defective Input shaft worn or damaged Generator shaft worn or damaged Torque limiter defective	Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Inspect the input shaft for wear and damage. Inspect the generator shaft for wear and damage. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Noise from transmission (e-CVT) in engine drive mode	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Foreign material in traction motor Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Flywheel defective Low ATF level ATF pump worn or binding ATF strainer clogged Input shaft worn or damaged Countershaft worn or damaged Motor shaft worn or damaged Final gears worn or damaged Over drive gears worn or damaged Clutch defective Thrust washer seized, worn, or damaged Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective	Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Check the ATF pump drive gears for wear and damage. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Replace the valve body assembly . Inspect the input shaft for wear and damage. Inspect the countershaft for wear and damage. Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Check the final gears for wear and damage. Check the over drive gears for wear and damage. Check the thrust washers for seizure, wear and damage. Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Noise from transmission (e-CVT) in hybrid drive mode	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Foreign material in traction motor Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Flywheel defective Low ATF level ATF pump worn or binding ATF strainer clogged Input shaft worn or damaged Countershaft worn or damaged Generator shaft worn or damaged Motor shaft worn or damaged Final gears worn or damaged Clutch defective Clearance between clutch end-plate and top disc incorrect Torque limiter defective Thrust washer seized, worn, or damaged Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective ECT Sensor 1 defective	Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Check the ATF pump drive gears for wear and damage. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Replace the valve body assembly . Inspect the input shaft for wear and damage. Inspect the countershaft for wear and damage. Inspect the generator shaft for wear and damage. Inspect the motor shaft for wear and damage. Check the final gears for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, replace the clutch. Check the thrust washers for seizure, wear and damage. Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier. Replace the transmission (e-CVT) . Check ECT Sensor 1 in the Data List of PGM-FI system with the HDS. If the value of ECT Sensor 1 does not change even the engine is warmed up, replace it .

Symptom	Probable cause (s)	Notes
Noise from transmission (e-CVT) in EV drive mode	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Foreign material in traction motor Countershaft worn or damaged Motor shaft worn or damaged Final gears worn or damaged Clutch defective Clearance between clutch end-plate and top disc incorrect Thrust washer seized, worn, or damaged Input shaft bearing, countershaft bearing, generator shaft bearing, motor shaft bearing, or differential carrier bearing defective	Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Inspect the countershaft for wear and damage. Inspect the motor shaft for wear and damage. Check the final gears for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, replace the clutch. Check the thrust washers for seizure, wear and damage. Check the bearings for the input shaft, the countershaft, the generator shaft, the motor shaft, and the differential carrier. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Noise from transmission (e-CVT) while recharging when vehicle stopped	Foreign material in traction motor Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Flywheel defective Low ATF level ATF pump worn or binding ATF strainer clogged Input shaft worn or damaged Generator shaft worn or damaged Torque limiter defective ECT Sensor 1 defective	Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the ATF pump drive gears for wear and damage. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Replace the valve body assembly . Inspect the input shaft for wear and damage. Inspect the generator shaft for wear and damage. Replace the transmission (e-CVT) . Check ECT Sensor 1 in the Data List of PGM-FI system with the HDS. If the value of ECT Sensor 1 does not change even the engine is warmed up, replace it .

Symptom	Probable cause (s)	Notes
Vehicle does not accelerate above certain speed	Traction motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate Transmission fluid temperature sensor Sensor harness 3-phase wires Traction motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Traction motor stator temperature high Traction motor rotor temperature high Traction motor position sensor not learned Generator motor defective: worn or damaged: Stator Rotor Position sensor Position sensor line Terminal plate 3-phase wires Generator motor defective; faulty installations: Stator Position sensor Terminals 3-phase wire terminals Generator motor stator temperature high Generator motor position sensor not learned Engine output low Low ATF level ATF pump worn or binding Main regulator valve stuck or spring worn Foreign material in separator plate orifice Cooler relief valve defective ATF strainer clogged ATF cooler clogged	Check the engine control system. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Check the ATF level. If the level is below the lower level, check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines. Check the ATF pump drive gears for wear and damage. Replace the valve body assembly . Inspect the motor shaft for wear and damage. Inspect the generator shaft for wear and damage. Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Check the ATF cooler. Replace the transmission (e-CVT) .

Symptom	Probable cause (s)	Notes
Vibration in all shift positions/modes	Transmission assembly and drive plate installation defective Flywheel defective	Check for an incorrectly installed transmission, and check the drive plate for wear and damage. Replace the drive plate if it is worn or damaged. Check the flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel.
Transmission does not shift into P position/mode or shift out of P position/mode	Park pawl actuator defective Park pawl actuator driver unit defective Park position sensor defective SBW shifter control module defective Park mechanism defective	Check the park position sensor. Inspect the park mechanism and the park pawl actuator. Check SBW shifter control module.
Speedometer and odometer does not operate	Traction motor position sensor defective Traction motor position sensor line failure Traction motor sensor harness failure Traction motor position sensor failed to install	Inspect the motor shaft for wear and damage. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Replace the transmission (e-CVT) .
Vehicle does not turn to the READY TO DRIVE mode	Park pawl actuator defective Park pawl actuator driver unit defective Park position sensor defective SBW shifter control module defective	Check the park position sensor. Inspect the park mechanism and the park pawl actuator. Check the SBW shifter control module.