LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2022 >> 4Runner TRD Pro >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Transfer Case (VF4BM) - Diagnostics - Introduction) >> Transfer System >> Fail-Safe Chart [08/2019 - ] >> Fail-Safe Chart [08/2019 - ]

Fail-Safe Chart [08/2019 - ]

WARNING: This page is about a different variant/trim than selected.
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 N 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