Inspection Procedure

HINT:

• Even though terminal TC is not connected to terminal CG, the MIL blinks.
• For the above phenomenon, an open or short in the wire harness, or malfunction inside the ECM is the likely cause.

1. CHECK DLC3 (TC VOLTAGE) 
   Fig 1: Checking DLC3 (TC Voltage)

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   1. Turn the ignition switch ON.
   2. Measure the voltage between the terminals of the DLC3.

   Standard: 

   SPECIFIED CONDITION
   
   

   Symbols (Terminal No)	Specified condition
   TC (13) - CG (4)	9 to 14 V

   1. OK: Go to step   3 
   2. NG: GO TO NEXT STEP 
2. CHECK HARNESS AND CONNECTOR (DLC3 - ECM) 
   1. Disconnect the E4 ECM connector.
   2. Check for continuity between the wire harness side connectors.
      Fig 2: Identifying DLC3 Connector Terminal

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      Standard (Check for open): 

      SPECIFIED CONDITION
      
      

      Symbols (Terminal No.)	Specified condition
      TC (13) - TC (E4-20)	Continuity

      Standard (Check for short): 

      SPECIFIED CONDITION
      
      

      Symbols (Terminal No.)	Specified condition
      TC (13) - TC (E4-20) - Body ground	No continuity

   3. Reconnect the ECM connector.
   Fig 3: Reconnecting ECM Connector

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   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: CHECK AND REPAIR HARNESS AND CONNECTOR (DLC3 - BODY GROUND) 
3. CHECK MIL 
   1. Turn the ignition switch ON.
   2. Connect between terminals TC and CG of the DLC3 connector.
   3. Check the MIL operation.

      Standard: MIL blinks 

   Fig 4: Connecting Between Terminals TC & CG Of DLC3 Connector

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   1. NG: CHECK AND REPLACE ECM (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
   2. OK: NO PROBLEM