Retrial

Retrial
The transfer motor actuator starts transfer gear shifting after signal from 4WD switch on instrument panel has been received. But the shifting may be impossible in cold weather or under high speed condition. When 2 seconds have passed since transfer gear shifting started and the transfer position switch dose not turn on (the gear engagement is not completed), the motor reverses its rotation for 1.2 seconds and tries again to shift transfer gear. This procedure is repeated 3 times in maximum. While this procedure, 4WD indicator lamp blinks by 2 Hz.
If the transfer position switch does not turn on after aforementioned procedure has been repeated 3 times, the gear shifting is stopped and 4WD indicator lamp's blinking changes from 2Hz to 4Hz to notify driver that the gear shifting is stopped. This blinking of indicator lamp continues until 4WD switch is returned from 4WD to 2WD.

Time Chart of Shifting Under Severe Condition (retrial)





Warning at "4L" position: In view of the shifting mechanism of transfer, the gear shifting from 4WD to 2WD at "4L" condition is impossible. Therefore, the transfer position switch can not be turned off by 4WD switch when vehicle is in "4L" condition. In the case this condition continues for 2 seconds, the shifting to 2WD is stopped and the indicator lamp's blinking changes from 2Hz to 4Hz to notify driver of wrong operation.

Time Chart of Shifting from 4WD to 2WD at "4L" Condition








4WD out signal to other Electronic Hydraulic Control Unit: ECU of shift on the fly sends 4WD out signal to other Electronic Hydraulic Control Unit.