Shift Out Of Neutral

The following steps describe the process for a shift out of NEUTRAL. 

• Extinguish the Neutral LED. 
• Engage the shift motor for a maximum of 1 second ±100 msec toward the transfer case 4LOCK mode position while monitoring the mode sensor position. 
• Disengage the shift motor when the correct mode sensor position is recognized. 
• Extinguish the Neutral LED. 
• Transmit a bus message that the transfer case shift is complete. 
• If the desired mode sensor position is not received after the shift timer expires (i.e. a blocked or other condition exists), stop driving the motor and wait for 200 msec ±50 msec. The shift motor is then reversed in the direction back toward the source gear for up to 1.0 seconds 100 msec. The FCM waits for 2.0 seconds ±50 msec. and repeats the attempt to shift to the desired position. 
• When the Neutral button is released, if the 4LOCK position is the desired position, the shift is complete. Illuminate the 4LOCK message icon. 
• Otherwise when the Neutral button is released, if all of the shift requirements are being met then engage the shift motor towards the desired position for 1 second ±100 msec per 'D' channel. (if requirements for shifting are not met, illuminate the 4LOCK message icon and flash the destination message icon as an indication to the driver that all of the driver controllable shift conditions are not being met). If this requires another range or mode shift, begin the range/mode shift process. 
• If the desired mode sensor position is not achieved after the shift timer expires (i.e. a blocked or other condition exists), refer to  BLOCKED SHIFT STRATEGY  , also known as Phase 2 shifts.