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Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DLC3 
    1. Measure the resistance according to the value (s) in the table below.
      Fig 1: DLC3 Connector Result Table
      G02579844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      Fig 2: Identifying DLC3 Connector Terminals
      G02579845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: When the measured value is 132 Ω or more and a CAN communication system diagnostic code is output, there may be a fault other than a disconnection of the DLC3 sub bus line. For that reason, troubleshooting should be performed again from "How to Proceed with Troubleshooting" after repairing the trouble area.
      B: REPAIR OR REPLACE DLC3 SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L) 

      A: Go to next step. 

  2. CHECK CAN MAIN BUS LINE FOR DISCONNECTION (ECM - CAN J/C) 
    1. Disconnect the connector (E7) from the ECM.
    2. Measure the resistance according to the value (s) in the table below.
      Fig 3: E7 ECM Connector Terminals Resistance Specifications
      G02579846Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying E7 ECM Connector Terminals
      G02579847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: REPLACE ECM (  ECM (1GR-FE)  (1GR-FE) OR  ECM (2UZ-FE)  (2UZ-FE)) 

    NG: Go to next step. 

  3. INSPECT CAN J/C 
    1. Disconnect the CAN main bus line connector (J51) from the CAN J/C.
      Fig 5: Disconnecting CAN Main Bus Line Connector (J51) From CAN J/C
      G02579848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.
    2. Measure the resistance according to the value in the table below.
      Fig 6: CAN J/C Connector Terminals Resistance Specifications
      G02579849Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Identifying CAN J/C Connector Terminals
      G02579850Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE CAN J/C 

      OK: Go to next step. 

      REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN J/C - ECM)