SFI SYSTEM(w/ Canister Pump Module) Pattern Select Switch Snow Mode Circuit

DESCRIPTION

When SNOW is selected, the operation of the throttle motor is moderated to control engine output. This helps to reduce skidding of the drive wheels, and assists with takeoff acceleration, driving straightness and turning stability.

WIRING DIAGRAM

B002E95E01
*a SNWI
*b Combination Switch Assembly (Snow Mode Switch)
*c CAN Communication Line

PROCEDURE


  1. READ VALUE USING GTS (SNOW SWITCH STATUS)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / All Data / Snow Switch Status.


      Powertrain > Engine > Data List
      Tester Display
      Snow Switch Status

    5. Read the value displayed on the GTS.

      OK
      Condition GTS Display (Snow Switch Status)
      Snow mode switch pushed and held ON
      Snow mode switch not pushed OFF
      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. INSPECT COMBINATION SWITCH ASSEMBLY (SNOW MODE SWITCH)


    1. Inspect the combination switch assembly (Snow mode switch).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE COMBINATION SWITCH ASSEMBLY (SNOW MODE SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ECM - COMBINATION SWITCH ASSEMBLY (SNOW MODE SWITCH))


    1. Disconnect the K24 combination switch assembly (Snow mode switch) connector.

    2. Disconnect the A12 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A12-16 (SNWI) - K24-2 (2ND) Always Below 1 Ω
      A12-16 (SNWI) or K24-2 (2ND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY (SNOW MODE SWITCH) - BODY GROUND)


    1. Disconnect the K24 combination switch assembly (Snow mode switch) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K24-4 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR