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HOMESERVICE MANUALSTOYOTA20254RUNNER SR5, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONTRANSFER CASETOUCH SELECT 2-4 AND HIGH-LOW SYSTEM (VF2DM) - DIAGNOSTIC CODES & CIRCUIT TESTSTOUCH SELECT 2-4 AND HIGH-LOW SYSTEMDTC P1784-62: 4WD/AWD TRANSFER CASE SHIFT MOTOR LIMIT SWITCH AND TRANSFER CASE H4-L4 POSITION SWITCH SIGNAL COMPARE FAILURE [12/2024 - ]DESCRIPTION
2025 Toyota 4Runner SR5, 4WD

DTC P1784-62: 4WD/AWD Transfer Case Shift Motor Limit Switch and Transfer Case H4-L4 Position Switch Signal Compare Failure [12/2024 - ]: Description

2025 Toyota 4Runner SR5, 4WDSECTION Description

Combinations other than the normal patterns in the table below are determined to be a malfunction.

Transfer Shift Actuator Assembly Terminal Mode
4L Switching 4H Switching 2H
Transfer Limit Switch TL1 OFF OFF OFF ON ON
TL2 ON ON OFF OFF OFF
TL3 OFF ON ON ON OFF
2WD Position Switch 2WD OFF OFF OFF OFF/ON ON
4L Position Switch 4WDL ON ON/OFF OFF OFF OFF
DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
P1784-62 4WD/AWD Transfer Case Shift Motor Limit Switch and Transfer Case H4-L4 Position Switch Signal Compare Failure Diagnosis Condition: 
  • When switching between 2H and 4L (transfer shift motor operating) while the ignition switch is turned to ON or directly after the ignition switch is turned to ON

Malfunction Status: 
  • The combination of TL1, TL2, TL3, 2WD and 4WDL does not match

Malfunction Time: 
  • 0.05 seconds or more (if directly after ignition switch is turned to ON, 1 second or more)

Number of Trips: 
  • 1 trip
  • Wire harness and connector
  • Transfer limit switch (transfer shift actuator assembly)
  • 2WD position switch (transfer shift actuator assembly)
  • 4L position switch (transfer shift actuator assembly)
  • 4 wheel drive control ECU
 Four Wheel Drive A
DTC DETECTION CONDITIONS:

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition When switching between 2H and 4L (transfer shift motor operating) while the ignition switch is turned to ON ◦ -
When switching between 2H and 4L (transfer shift motor operating) while the directly after the ignition switch is turned to ON - ◦
Malfunction Status The combination of TL1, TL2, TL3, 2WD and 4WDL does not match ◦ ◦
Detection Time 0.05 seconds or more 1 second or more
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

RENDER: 1.0x

NO RELATED

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