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i-SHIFT System Learning

The i-SHIFT learning must be done so the TCM can learn characteristic information of the system. There are two learning modes, ‘‘Dynamic mode'' and ‘‘Static mode'', and the learning information is different between these two. It can only be done by doing the DYNAMIC MODE LEARNING or the STATIC MODE LEARNING in the ADJUSTMENT MENU with the HDS. The ‘‘Dynamic mode'' requires driving procedures, and the ‘‘Static mode'' does not require any driving procedures.
i-SHIFT System Learning (Dynamic Mode)
i-SHIFT system learning (Dynamic Mode) is learned through the following steps with the HDS.
  1. Shift change actuator position learning.
  1. Synchronizing position learning.
  1. Clutch contact position 1 learning.
  1. Clutch contact position 2 learning.
  1. Clutch friction learning.
  1. Clutch contact position 3 learning.
    Tasks necessary in the learning process.
    • Replace the clutch actuator (TCM).
    • Replace the clutch disc.
    • Replace the pressure plate.
    • Replace the flywheel.
i-SHIFT System Learning (Static Mode)
i-SHIFT system learning (static mode) is learned through the following steps with the HDS.
  1. Shift change actuator position learning.
  1. Synchronizing position learning.
  1. Clutch contact position 1 learning.
  1. Clutch contact position 2 learning.
  1. Clutch contact position 3 learning.
    Tasks necessary in the learning process.
    • Replace the transmission shift change actuator.
    • Removal/installation the slave cylinder.
    • Disassembly/reassembly the transmission.
    • Removal/installation the transmission.
    When performing the following maintenance, perform Learning.
    i-SHIFT System Learning (Dynamic Mode)
    i-SHIFT System Learning (Static Mode)
    Replace the clutch actuator (TCM).
    ×
    Replace the transmission shift change actuator.
    ×
    Removal/installation the slave cylinder.
    ×
    Replace the clutch disc.
    ×
    Replace the pressure plate.
    ×
    Replace the flywheel.
    ×
    Removal/installation the transmission.
    ×
    Disassembly/reassembly the transmission.
    ×

    ○:
    Maintenance to fall under
    ×:
    Maintenance to not fall under

Shift Change Actuator Position Learning
The transmission shift change actuator operates automatically and learns the transmission's neutral position (neutral reference) and the gear end position (from 1st to 6th and R) and stores the learning value into the TCM.
The shift change actuator position learning is required after these maintenance operations:
  • Replace the clutch actuator (TCM).
  • Removal/installation the transmission shift change actuator.
  • Removal/installation the transmission.
  • Disassembly/reassembly the transmission.
The shift change actuator position learning can be done by using the HDS under these conditions:
  • IG switch on.
  • Engine not running.
  • N position.
NOTE:
  • The commands are sorted for each gear, and can be shifted by the HDS.
  • Depending on the gear position, shifting may become difficult. If unsuccessful after trying three times to shift, it is considered Fail.
  • Usually, learning is done in the order R-1-2-3-4-5-6; but if there is failure at 2nd gear, try to relearn by shifting to another gear at once as in the order R-1-2-3-2-4-2-5-6.
Synchronizing Position Learning
The transmission shift change actuator operates automatically and learns the synchro-timing (determined from the change of engine torque) just before gear is applied, and stores the learning value to the TCM.
The synchronizing position learning is required after these maintenance operations:
  • Replace the clutch actuator (TCM).
  • Removal/installation the transmission shift change actuator.
  • Removal/installation the transmission.
  • Disassembly/reassembly the transmission.
Synchronizing position learning can be done by using the HDS under these conditions:
  • Engine running.
  • N position.
  • Foot brake on.
  • Parking brake on.
  • Shift change actuator position learning has been completed.
NOTE:
  • The commands are sorted for each gear, and can be shifted by the HDS.
  • In synchronizing position learning, a failure once is considered as fail.
  • When performed together with shift change actuator position learning, learning values for both processes are stored in the EEPROM.
Clutch Contact Point 1·2 Learning
The clutch actuator automatically operates, learns the initial torque application on the clutch disc, and stores the learning value into the TCM.
‘‘1'' means that the clutch actuator operated once and has learned the temporary value; ‘‘2'' means that the clutch actuator operated twice and has done accurate learning. The learning value is stored in the TCM.
The clutch contact position 1·2 learning is required after these maintenance operations:
  • Removal/installation the slave cylinder.
  • Replace the clutch actuator (TCM).
  • Removal/installation the transmission.
  • Disassembly/reassembly the transmission.
  • Replace the clutch disc.
  • Replace the pressure plate.
  • Replace the fly wheel.
Clutch contact position 1 and 2 learning can be done by using the HDS under these conditions:
  • Engine running.
  • N position.
  • Foot brake on.
  • Parking brake on.
  • Synchronizing position learning has been completed.
  • After the engine has warmed up (Engine torque is stable).
NOTE:
  • The trigger has been set, and the function starts to operate when the shifter is changed from N to D.
  • Perform the learning of clutch contact Position 1 and 2 in succession.
  • If this learning process is not completed, the vehicle cannot be driven.
Clutch Friction Learning
The HDS stores the initial values specified for a certain model into the TCM.
Also, the HDS commands to increase the learning speed and perform driving test, and sends the frictional coefficient adjustment of the initial value to the TCM.
The clutch friction learning is required after these maintenance operations:
  • Replace the clutch actuator (TCM).
  • Replace the clutch disc.
  • Replace the pressure plate.
  • Replace the flywheel.
The clutch friction learning can be done by using the HDS under the these conditions:
  • Clutch contact position 2 learning has been completed.
  • With the road surface resistance acting, rotate the wheels of the vehicle, and apply 1st gear until 6th gear.
NOTE:
  • Since there is no driving load during lift-up, correct adjustment cannot be achieved, thus connect the HDS and perform the driving test.
  • In the Driving Test Mode, the specialized Shift Pattern and Auto does not perform downshift.
Clutch Contact Position 3 Learning
After the coefficient of friction is input during the clutch friction learning, the procedure is done in the same manner as in clutch contact position 2 and the final learning is performed and stored in the TCM.
The clutch contact position learning is required after these maintenance operations:
  • Replace the clutch actuator (TCM).
  • Replace the clutch disc.
  • Replace the pressure plate.
  • Replace the flywheel.
  • Removal/installation the slave cylinder.*1
  • Removal/installation the transmission.*1
  • Disassembly/reassembly the transmission.*1
The clutch contact position 3 learning can be done by using the HDS under these conditions:
  • Engine running.
  • N position.
  • Foot brake on.
  • Parking brake on.
  • Synchronizing position learning has been completed.
  • After the engine has warmed up (Engine torque is stable).
NOTE:
  • The trigger has been set, and the function starts to operate when the shifter is changed from N to D.
  • Driving Test is not needed when performing the maintenance for*1, so perform clutch contact position 1, 2, and 3 learning in succession.