TRANSFER SYSTEM FAIL-SAFE CHART

3 Drive Mode (H4F, H4L, or L4L) (for 2TR-FE or 5L-E)
DTC NO.	Fail-safe Operation	Fail-safe Deactivation Condition
P163B	All switching prohibited	4 wheel drive control ECU internal circuit returns to normal and ignition switch is turned from off to ON
P17A8	All switching prohibited	Recovers from open circuit in high-low transfer shift motor drive circuit and ignition switch is turned from off to ON
P17A9	All switching prohibited	Recovers from short to ground in high-low transfer shift motor or center differential lock shift motor drive circuit and ignition switch is turned from off to ON
P17AA	All switching prohibited	Recovers from short to +B in high-low transfer shift motor or center differential lock shift motor drive circuit and ignition switch is turned from off to ON
P17AC	All switching prohibited or forced	High-low transfer limit switch signal returns to normal and ignition switch is turned from off to ON
P17DE	All switching prohibited	Recovers from open circuit in center differential lock shift motor drive circuit and ignition switch is turned from off to ON
P17DE	All switching prohibited or forced	Center differential lock limit signal returns to normal and ignition switch is turned from off to ON Transfer position switch returned to original position
P279E	All switching prohibited	Normal signal from transfer position switch input for 1 second and ignition switch is turned from off to ON
U0100	Switching between H4L and L4L prohibited (shift position N2 or neutral1 signal interrupted)	CAN communication signal from ECM is received Ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched
U0122	All switching prohibited	Switching complete CAN communication signal from skid control ECU is received and ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched Center differential lock indicator light finishes blinking 3 times and buzzer finishes sounding 3 times
U0416	All switching prohibited	Switching complete CAN communication signal from skid control ECU is received and ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched Center differential lock indicator light finishes blinking 3 times and buzzer finishes sounding 3 times

*1: for Manual Transmission
*2: for Automatic Transmission

4 Drive Mode (H4F, H4L, L4F or L4L) (for 1GR-FE, 1GD-FTV or 1KD-FTV)
DTC NO.	Fail-safe Operation	Fail-safe Deactivation Condition
P163B	All switching prohibited	4 wheel drive control ECU internal circuit returns to normal and ignition switch is turned from off to ON
P17A8	All switching prohibited	Recovers from open circuit in high-low transfer shift motor drive circuit and ignition switch is turned from off to ON
P17A9	All switching prohibited	Recovers from short to ground in high-low transfer shift motor, center differential lock shift motor or differential lock shift motor*3 drive circuit and ignition switch is turned from off to ON
P17AA	All switching prohibited	Recovers from short to +B in high-low transfer shift motor, center differential lock shift motor or differential lock shift motor*3 drive circuit and ignition switch is turned from off to ON
P17AC	All switching prohibited or forced	High-low transfer limit switch signal returns to normal and ignition switch is turned from off to ON
P17D0	Center differential switching from free to lock prohibited	Center differential lock switch normal signal is input for 3 seconds Ignition switch turned from off to ON
P17DE	All switching prohibited	Recovers from open circuit in center differential lock shift motor drive circuit and ignition switch is turned from off to ON
P17DE	All switching prohibited or forced	Center differential lock limit signal returns to normal and ignition switch is turned from off to ON Transfer position switch returned to original position
U0100	Switching between H4 and L4 prohibited (shift position N2 or neutral1 signal interrupted)	CAN communication signal from ECM is received Ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched
U0122	All switching prohibited	Switching complete CAN communication signal from skid control ECU is received and ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched Center differential lock indicator light finishes blinking 3 times and buzzer finishes sounding 3 times CAN communication returns to normal and differential lock switch input signal (free or lock) and differential lock shift actuator position (free or lock) are matched*3
U0416	All switching prohibited	Switching complete CAN communication signal from skid control ECU is received and ignition switch is turned from off to ON CAN communication returns to normal and transfer position switch and transfer shift actuator assembly positions are matched Center differential lock indicator light finishes blinking 3 times and buzzer finishes sounding 3 times CAN communication returns to normal and differential lock switch input signal (free or lock) and differential lock shift actuator position (free or lock) are matched*3

*1: for Manual Transmission
*2: for Automatic Transmission
*3: w/ Rear Differential Lock