Inspection Procedure

1. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
   Fig 1: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result: 

   CONNECTOR TERMINAL RESISTANCE SPECIFICATION
   
   

   Tester connection	Condition	Specified value	Result
   D1-6 (CANH) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	108 to 132 Ω	A
   D1-6 (CANH) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	132 Ω or higher	B

   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. 

1. Disconnect the connector (E7) from the ECM.
   Fig 2: Disconnecting Connector (E7) From ECM

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

   Standard: 

   CONNECTOR TERMINAL RESISTANCE SPECIFICATION
   
   

   Tester connection	Condition	Specified value
   E7-33 (CANH) - E7-34 (CANL)	IG switch OFF Stop light switch OFF	108 to 132 Ω

OK: REPLACE ECM (SEE  ECM (1GR-FE)  OR  ECM (2UZ-FE)  ) 

NG: GO TO NEXT STEP. 

1. Disconnect the CAN main bus line connector (J51) from the CAN J/C.
   NOTE:

   • Before disconnecting the connector, make a note of where it is connected.
   • Reconnect the connector to its original position.

   Fig 3: CAN J/C And Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
   Fig 4: Identifying CAN J/C Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   CONNECTOR TERMINAL RESISTANCE SPECIFICATION
   
   

   Between the terminals where the connector (J51) was connected	Condition	Specified value
   CANH - CANL	IG switch OFF Stop light switch OFF	108 to 132 Ω

NG: REPLACE CAN J/C 

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