Compensation Mode; Electric Shift Default Mode; Indicator Function On Shifting - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

3E-16
Shift Conditions
Shift is allowed only when certain conditions for the vehicle are satisfied. This means that the shift conditions must
satisfy the operating conditions for 2 seconds before motor starts and 2 seconds of delay at initial stage is to diagnose
the system.
The shift requirements are as follows:
- There should be no fault with battery voltage and shift motor for all shifts.
- Shift between 4H and 4L is operated only under the vehicle speed of below 43 Hz.
- There should be no fault with speed sensors.
- Transmission must be in neutral position (In case of manual transmission, the clutch pedal should be depressed).
Motor Controls
• The shift steps have the sequence of 4H ¡æ 4L and 4L ¡æ 4H ¡æ 2H. TCCU operates the shift motor until it reads
required position code. If it detects the faulty code, the system is operated with the compensation mode.
• Once the shift operation is started, it is completed regardless of ignition power. If there are not operating signals from
position sensor, the shifting failure due to timeout occurs. This failure appears when the shifting time between 2H
and 4H and between 4H and 4L is delayed over 5 seconds compared to normal shift. Once the shifting time exceeds
the specified time, TCCU cannot properly supply the voltage to shift motor and is operated in compensation mode.
• Even though the system recognize a fault before motor starts, it is considered as fault.
• Motor stops operation when it reaches at target range.

Compensation Mode

The motor stops when the encoder related troubles are detected during shift operation. It moves toward LOW-HIGH
direction for 5 seconds so that the motor is not left in unidentified position.
0.3 seconds
0.3 seconds
(4H → → → → → 4L)
0.3 seconds
0.3 seconds
(4L → → → → → 4H)
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Once a range change has been initiated the 4L Indicator will
begin to blink at a rate of 0.3 seconds on, 0.3 seconds off until
Shift completed
the shift is completed or canceled.
4L Indicator illuminates as below figure.
If the motor fails to reach its destination, the TOD will attempt
the following (in order):
1. The TOD will wait 3 seconds then attempt the shift again.
2. If the second attempt to reach the destination fails the
Shift completed 3. If the attempt to return to the original position fails, the
4. If the second attempt to return to the original position
Y220_03E009

Indicator Function On Shifting

Electric Shift Default Mode

TOD will wait 3 seconds then attempt to rotate the motor
back to the original position. If successful, all future shifts
will be inhibited until the Ignition is cycled.
TOD will wait 3 seconds then attempt to rotate the motor
to the original position again. If the second attempt to
return to the original position is successful, the "4WD
CHECK" indicator will be illuminated, and all future shifts
will be inhibited until the Ignition is cycled.
fails the motor will be turned off, the "4WD CHECK"
indicator will be illuminated, and all future shifts will be
inhibited until the Ignition is cycled.
TOD
REXTON SM - 2004.4