СИСТЕМА МЕХАНИЧЕСКОЙ ТРАНСМИССИИ "MULTIMODE" 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

CAUTION / NOTICE / HINT

PROCEDURE

1. READ VALUE USING GTS (IGNITION SIGNAL)

   
   

   1. Connect the GTS to the DLC3

   2. Turn the ignition switch to ON.

   3. Turn the GTS on

   4. Enter the following menu: Powertrain / Multi-Mode M/T / Data List.

   5. In accordance with the display on the GTS, read the Data List.

      
      Powertrain > Multi-Mode M/T > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Ignition Signal	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.

      
      Powertrain > Multi-Mode M/T > Data List

      Tester Display
      Ignition Signal

      Result
      Proceed to OK NG

   
   

   OK

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

   NG

2. INSPECT TCM (IG TERMINAL VOLTAGE)

   
   
   1. 

      *a	Front view of wire harness connector (to TCM)

      Disconnect the 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 Condition Specified Condition E104-3 (IG) - Body ground Ignition switch off Below 1 V ignition switch to ON 11 to 14 V

      Result
      Result Proceed to NG A OK B

   
   

   B

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

   A

3. CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND)

   
   

   1. Remove the IG2 relay from the engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition IG2 relay terminal 2 - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. CHECK HARNESS AND CONNECTOR (IG2 RELAY - IGNITION SWITCH OR CERTIFICATION ECU)

   
   

   1. Remove the IG2 relay from the engine room relay block and junction block assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition IG2 relay terminal 1 - Body ground 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 - IG2 RELAY) Click here

   C

   INSPECT IGNITION OR STARTER SWITCH ASSEMBLY Click here

   A

5. CHECK HARNESS AND CONNECTOR (IG2 RELAY - BATTERY)

   
   

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

      Standard Voltage
      Tester Connection Condition Specified Condition IG2 relay terminal 3 - Body ground Always 11 to 14 V

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

6. INSPECT RELAY (IG2 RELAY)

   
   

   1. Inspect the IG2 relay.

      Click here

      Result
      Proceed to OK NG

   
   

   OK

   REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - TCM)

   NG

   REPLACE RELAY (IG2 RELAY)

7. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - IG2 RELAY)

   
   

   1. Disconnect the certification ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E33-9 (IG2D) - IG2 relay terminal 1 Always Below 1 Ω IG2 relay terminal 3 - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

   GO TO ENTRY AND START SYSTEM

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

8. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

   
   

   1. Inspect the ignition or starter switch assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click here

   OK

9. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - IG2 RELAY)

   
   

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

      Standard Resistance
      Tester Connection Condition Specified Condition E4-3 (IG2) - IG2 relay terminal 1 Always Below 1 Ω IG2 relay terminal 1 - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

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

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    
    
    1. 

       *a	Front view of wire harness connector (to TCM)

       Disconnect the TCM connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition E104-6 (GND) - Body ground Always Below 1 Ω

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

11. REPLACE TCM

    
    

    1. Replace the TCM.

       Click here

       Result
       Proceed to NEXT

    
    

    NEXT

12. PERFORM INITIALIZATION

    
    

    1. Perform the initialization and learning procedure.

       Click here

       Result
       Proceed to NEXT

    
    

    NEXT

    END