Open in CAN Main Bus Line: Procedure

1. Measure the resistance of the DLC3.
   Fig 1: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Tester Connection	Condition	Specified Condition	Proceed to
   D1-6 (CANH) - D1-14 (CANL)	Ignition switch OFF	108 to 132 Ω	A
   D1-6 (CANH) - D1-14 (CANL)	Ignition switch OFF	132 Ω or higher	B

   NOTE:

   When the measured value is 132 Ω or higher and a CAN communication system diagnostic trouble code is output, there may be a fault besides disconnection of the DLC3 sub bus line. For that reason, troubleshooting should be performed again from "HOW TO PROCEED WITH TROUBLESHOOTING". Refer to HOW TO PROCEED WITH TROUBLESHOOTING  after repairing the trouble area.

B → REPAIR OR REPLACE DLC3 SUB BUS LINE AND CONNECTOR (CANH, CANL) 

A: Go to next step 

1. Disconnect the J25 CAN junction connector.
   Fig 2: Identifying J25 CAN Junction Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   J25-10 (CANH) - J25-21 (CANL)	Ignition switch OFF	108 to 132 Ω

NG → See step   4 

OK: Go to next step 

1. Disconnect the J25 CAN junction connector.
   Fig 3: Identifying J25 CAN Junction Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   J25-11 (CANH) - J25-22 (CANL)	Ignition switch OFF	108 to 132 Ω

NG → See step   5 

OK → REPAIR OR REPLACE CAN JUNCTION CONNECTOR 

1. Disconnect the E6 ECM connector.
   Fig 4: Identifying E6 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the ECM.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   E6-25 (CANH) - E6-24 (CANL)	Ignition switch OFF	108 to 132 Ω

NG → REPLACE ECM 

OK → REPAIR OR REPLACE ECM MAIN BUS LINE AND CONNECTOR 

1. Disconnect the T28 translate ECU connector.
   Fig 5: Identifying T28 Translate ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the translate ECU.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   T28-8 (CANH) - T28-10 (CANL)	Ignition switch OFF	108 to 132 Ω

NG → REPLACE TRANSLATE ECU 

OK → REPAIR OR REPLACE TRANSLATE ECU MAIN BUS LINE AND CONNECTOR