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DTC C1298: Linear Solenoid Circuit: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BATTERY) 
    1. Disconnect the ECU connector.
      Fig 1: Identifying 4WD Control ECU Connector (Battery)
      GTY305662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      K1-9 (BSLC) - Body Ground Always 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to 4WD Control ECU)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. INSPECT ELECTRO MAGNETIC CONTROL COUPLING (ELECTROMAGNETIC SOLENOID) 
    1. Disconnect the coupling connector.
      Fig 2: Identifying Coupling Connector
      GTY304533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (BSF) - 2 (SLC) Always 2.2 to 2.6 Ω
      1 (BSF) - Body ground Always 10 kΩ or higher
      2 (SLC) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Electromagnetic Solenoid

    NG → See step   4 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (ELECTROMAGNETIC CONTROL COUPLING - 4WD CONTROL ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K1-13 (SLC+) - 1 (BSF) Always Below 1 Ω
      K1-32 (SLC-) - 2 (SLC) Always Below 1 Ω
      K1-13 (SLC+) - Body ground Always 10 kΩ or higher
      K1-32 (SLC-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   5 

  4. REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY. Refer to  REMOVAL 
  5. REPLACE 4WD CONTROL ECU. Refer to  REMOVAL