TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM, Diagnostic DTC:P279E

DTC Code DTC Name
P279E Four Wheel Drive (4WD) Range Signal Circuit Range / Performance

DESCRIPTION

When the transfer position switch is switched, the 2-4 terminal and LO terminal change to one of the following ON/OFF combinations listed in the table below.

Terminal H2 Between H2 and H4 H4 Between H4 and L4 L4
2-4 ON OFF ON OFF OFF
LO OFF OFF ON OFF ON

This DTC is detected if the transfer position switch 2-4 terminal and LO terminal signals are simultaneously received.

DTC No. Detection Item DTC Detection Condition Trouble Area
P279E Four Wheel Drive (4WD) Range Signal Circuit Range / Performance

  • Diagnosis Condition: Ignition switch turned to ON

  • Malfunction Status: The ON/OFF combination of the 2-4 terminal and LO terminal does not match the pattern

  • Malfunction Time: 60 seconds or more

  • Other: 1 trip detection logic

  • Wire harness and connector

  • 4 wheel drive control ECU

  • Transfer position switch

WIRING DIAGRAM

B003PGEE01
*a Transfer Position Switch
*b 4 Wheel Drive Control ECU

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER POSITION SWITCH)


    1. Disconnect the C60 4 wheel drive control ECU connector.

    2. Disconnect the G11 transfer position switch connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C60-14 (2-4) - G11-5 (2-4) Always Below 1 Ω
      C60-13 (LO) - G11-2 (LO) Always Below 1 Ω
      G11-4 (GND) - Body ground Always Below 1 Ω
      C60-14 (2-4) or G11-5 (2-4) - Body ground Always 10 kΩ or higher
      C60-13 (LO) or G11-2 (LO) - Body ground Always 10 kΩ or higher
      C60-14 (2-4) or G11-5 (2-4) - C60-13 (LO) or G11-2 (LO) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK TRANSFER POSITION SWITCH


    1. B003JUXC01
      *a

      Component with harness connected

      (Transfer Position Switch)

      Remove the transfer position switch with its connector still connected.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G11-5 (2-4) - Body ground

      Ignition switch ON

      H2 position

      		 Below 1.5 V

      Ignition switch ON

      H4 position

      		 Below 1.5 V

      Ignition switch ON

      L4 position

      		 10 to 14 V
      G11-2 (LO) - Body ground

      Ignition switch ON

      H2 position

      		 10 to 14 V

      Ignition switch ON

      H4 position

      		 Below 1.5 V

      Ignition switch ON

      L4 position

      		 Below 1.5 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    NG

    REPLACE TRANSFER POSITION SWITCH Click here