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Home >> Toyota >> 2022 >> 4Runner TRD Pro >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Transfer Case (VF4BM) - Diagnostic Codes & Circuit Tests) >> Transfer System >> DTC P17DF: Center Differential Lock Limit SW Circuit [08/2019 - ] >> Description

DTC P17DF: Center Differential Lock Limit SW Circuit [08/2019 - ]: Description

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

When the transfer shift actuator assembly is switching between free and lock, the TL2 and TL3 terminals are in one of the ON/OFF combinations listed in the table below.

Terminal Mode
FREE Switching LOCK
TL2 OFF ON ON
TL3 ON ON OFF

A malfunction is detected depending on the combination of the 2 circuits that make up the center differential lock limit switch.

DTC No. DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
 Trouble Area
P17DF
  1. When switching between free and lock (center differential lock shift motor operating) while the ignition switch is turned to ON or directly after the ignition switch is turned to ON
  2. The combination of TL2 and TL3 does not match
  3. 0.05 seconds or more (if directly after ignition switch is turned to ON, 1 second or more)
  4. 1 trip detection logic
  • Wire harness and connector
  • 4 wheel drive control ECU
  • Transfer shift actuator assembly
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