MULTI-MODE MANUAL TRANSAXLE SYSTEM IG Signal Circuit

DESCRIPTION

When the ignition switch is turned to ON, the battery voltage is applied to terminal IG of the TCM. Power is supplied to the TCM via terminals +B and IG. The TCM interprets the ignition switch condition through the potential at the IG terminal.

WIRING DIAGRAM

A005LMSE01

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3

    2. Turn the ignition switch to ON and turn the tester on.

    3. Select the following menu items: Powertrain / Multi-Mode M/T / Data List.

    4. Read the value.

      Items

      [Abbreviation]

      		 Measurement Items: Display Normal Conditions Diagnostic Notes

      Ignition Signal

      [Ignition Sig]

      Ignition switch signal:

      OFF or ON

      		 ON: ignition switch to ON -
      OK
      [ON] is displayed in the item [Ignition Signal] when the ignition switch is turned to ON.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT TCM (IG TERMINAL VOLTAGE)


    1. A005K8IE02

      Disconnect the F68 TCM connector.

    2. Turn the ignition switch to ON.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      F68-3 (IG) - F68-6 (GND) Ignition switch off Below 1 V
      ignition switch to ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - IGNITION SWITCH OR CERTIFICATION ECU)


    1. Remove the No. 1 integration relay from the engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1D-17 - 1E-10 Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (w/ Entry and Start System) B
      NG (w/o Entry and Start System) C

    B

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - NO. 1 INTEGRATION RELAY) Click here

    C

    INSPECT IGNITION SWITCH ASSEMBLY Click here

    A

  4. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BATTERY)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1C-1 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1E-10 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY)


    1. A005M2YE02
      Text In Illustration
      *a

      Component without harness connected

      (No. 1 integration relay)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1C-1 - 1D-8 Battery voltage not applied 10 kΩ or higher
      Battery voltage applied to terminals 1D-17 and 1E-10 Below 1 Ω

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - TCM)

    NG

    REPLACE NO. 1 INTEGRATION RELAY Click here

  7. CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)


    1. Disconnect the F68 TCM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      F68-6 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

  9. PERFORM INITIALIZATION


    1. Perform the initialization and learning for multi-mode manual transaxle system Click here.


    NEXT

    END

  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - NO. 1 INTEGRATION RELAY)


    1. Disconnect the F65 certification ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-9 (IG2D) - 1D-17 Always Below 1 Ω
      1D-17 - Body ground Always 10 kΩ or higher

    OK

    GO TO ENTRY AND START SYSTEM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. INSPECT IGNITION SWITCH ASSEMBLY


    1. Inspect the ignition switch assembly Click here.


    NG

    REPLACE IGNITION SWITCH ASSEMBLY Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - NO. 1 INTEGRATION RELAY)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F13-6 (IG2) - 1D-17 Always Below 1 Ω
      1D-17 - Body ground Always 10 kΩ or higher

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR