Gear Unit Control System Symptom Troubleshooting Index (2017)

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

Electrical System Symptom Troubleshooting

Symptom	Probable cause(s)	Notes
When you turn the vehicle to the ON mode, the shift position indicator displays an improper indication, or it never displays at all	F-CAN communication line error Gauge control module defective PCM defective	Check the F-CAN communication line - Refer to: DTC Troubleshooting: U0100(Gauge Control Module) (2014 2015), or DTC Troubleshooting: U0100(Gauge Control Module) (2017) . 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 the same position the shift lever is in	Failure of transmission range switch circuit Failure of shift position indicator circuit F-CAN communication line error Gauge control module defective Transmission range switch defective or out of adjustment Shift cable out of adjustment PCM defective	Troubleshoot the shift position indicator circuit . Check the F-CAN communication line - Refer to: DTC Troubleshooting: U0100(Gauge Control Module) (2014 2015), or DTC Troubleshooting: U0100(Gauge Control Module) (2017) . 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 . Inspect the transmission range switch .
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 Brake pedal position switch circuit Brake pedal position switch defective Transmission range switch ATP P switch stuck OFF Transmission range switch ATP P switch line opened Accelerator pedal position sensor circuit Accelerator pedal position sensor defective Throttle body defective	Troubleshoot the shift lock system circuit . Test the shift lock solenoid . Inspect the transmission range switch . Inspect the APP sensor signal . Reset the PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) .
Transmission does not shift into sport mode even though the SPORT mode switch is pressed in D position/mode	Gauge control module defective Sport mode switch defective Sport mode switch circuit defective	Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function . Check the sport mode switch . Troubleshoot the sport mode switch circuit .
Sport mode indicator does not come on	Gauge control module defective Sport mode switch defective Sport mode switch circuit defective	Check the indicator drive circuit in the gauge control module by using the gauge control module self-diagnostic function . Check the sport mode switch . Troubleshoot the sport mode switch circuit .
Sport mode switch illumination does not come on	Sport mode switch illumination circuit defective Sport mode switch defective	Check the sport mode switch .
HDS does not communicate with the PCM	DLC circuit error	Troubleshooting the DLC circuit - Refer to: DLC Circuit Troubleshooting(PGM-FI System) (2014 2015), or DLC Circuit Troubleshooting(PGM-FI System) (2017) .

Hydraulic/Mechanical System Symptom Troubleshooting

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 Transmission range switch defective or out of adjustment Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn Transmission assembly and drive plate installation defective Engine output low 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, motor shaft, or differential carrier bearing defective ATF cooler clogged Axle disengaged	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. Check for a loose shift cable at the shift lever and the selector control lever. 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. Flush the ATF cooler . Check the axles.

Symptom	Probable cause(s)	Notes
Vehicle moves in R position/mode, but not in D or B position/mode	Traction motor position sensor worn or damaged Traction motor position sensor line failure Motor sensor harness failure Transmission range switch defective or out of adjustment Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. Check for a loose shift cable at the shift lever and the selector control lever. 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) assembly.
Vehicle moves in D and B position/mode, but not in R position/mode	Traction motor position sensor worn or damaged Traction motor position sensor line failure Motor sensor harness failure Transmission range switch defective or out of adjustment Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. Check for a loose shift cable at the shift lever and the selector control lever. 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) assembly.
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 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. 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 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. Flush the ATF cooler . Replace the transmission (e-CVT) assembly.
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) assembly.
Vehicle moves in N position/mode	Transmission range switch defective or out of adjustment Excessive ATF Relief valve defective Clutch defective Clearance between clutch end-plate and top disc incorrect	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. 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.
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, motor shaft, or differential carrier bearing defective Parking mechanism worn or damaged	Inspect the input shaft for wear and damage. Inspect the generator 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. Replace the transmission (e-CVT) assembly.
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, motor shaft, or differential carrier bearing defective	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. Inspect the countershaft 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) assembly.
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 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 Solenoid valve A defective 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 Clutch defective Clearance between clutch end-plate and top disc incorrect	Check the engine control system. Inspect the solenoid valve function with the HDS. Check for a seized solenoid valve, and inspect the O-rings. 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. 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. 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. Inspect the input shaft for wear and damage. Check the over drive 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. Replace the transmission (e-CVT) assembly.
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 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 Cooler 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. Inspect the input 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) assembly.
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) assembly.
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) assembly.
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, motor shaft, or differential carrier bearing defective	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 flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. 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. 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) assembly.
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 Excessive 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, motor shaft, or differential carrier bearing defective	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 flywheel for wear and damage, if the flywheel is worn or damaged, replace the flywheel. Check the motor position sensor harness for poor connections, loose terminals, wear, and damage. Check the ATF pump drive gears for wear and damage. Replace the valve body assembly. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. 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) assembly.
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, motor shaft, 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) assembly.
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	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. Replace the valve body assembly. Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. Inspect the input shaft for wear and damage. Inspect the generator shaft for wear and damage. Replace the transmission (e-CVT) assembly.
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 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. 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. Flush the ATF cooler . Replace the transmission (e-CVT) assembly.
Vibration in all shift lever positions	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.
Shift lever does not operate smoothly	Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn Park mechanism defective Selector control shaft worn or damaged	Check for a loose shift cable at the shift lever and the selector control lever. Inspect the park mechanism at the park lever and park gear. Check the control shaft for wear and damage.
Transmission does not shift into P position/mode or shift out of P position/mode	Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn Park mechanism defective Selector control shaft worn or damaged	Check for a loose shift cable at the shift lever and the selector control lever. Inspect the park mechanism at the park lever and park gear. Check the control shaft for wear and damage.
Shift position indicator does not indicate shift lever positions	Transmission range switch defective or out of adjustment Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn Selector control shaft worn or damaged	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. Check for a loose shift cable at the shift lever and the selector control lever. Check the control shaft for wear and damage.
Speedometer and odometer does not operate	Traction motor position sensor worn or damaged Traction motor position sensor line failure 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 assembly.
Vehicle does not turn to the READY TO DRIVE mode	Transmission range switch defective or out of adjustment Shift cable broken, binding, or out of adjustment Connection between shift cable and transmission or shift lever is worn Selector control shaft worn or damaged	Inspect the transmission range switch . If the transmission range switch fails the inspection, replace the switch. If the inspection is OK, check for proper transmission range switch installation, and adjust the shift cable. Check for a loose shift cable at the shift lever and the selector control lever. Check the control shaft for wear and damage.