CAN Main Bus Line for Disconnection (FROM 12/2010): Procedure

1. Turn the ignition switch off.
   Fig 1: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Result

   Tester connection	Condition	Specified value	Proceed to
   D20-6 (CANH) - D20-14 (CANL)	Ignition switch off	108 to 132 Ω	A
   D20-6 (CANH) - D20-14 (CANL)	Ignition switch off	69 Ω or more	B

   NOTE:

   When the measured value is 69 Ω or more and a CAN communication system DTC 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 DLC3 SUB BUS LINE OR CONNECTOR 

A: Go to next step 

1. Turn the ignition switch off.
   Fig 2: Identifying ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector (A55).
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified value
   A55-41 (CANH) - A55-49 (CANL)	Ignition switch off	108 to 132 Ω

NG → See step   3 

OK → See step   9 

1. Reconnect the ECM connector (A55) to the ECM.

NEXT: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

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

NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN JUNCTION CONNECTOR - ECM) 

OK: Go to next step 

1. Reconnect the CAN junction connector.

NEXT: Go to next step 

1. Turn the ignition switch off.
   Fig 4: Identifying Skid Control ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the skid control ECU connector (A34).
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified value
   A34-11 (CANH) - A34-25 (CANL)	Ignition switch off	108 to 132 Ω

NG → See step   7 

OK → See step   10 

1. Reconnect the skid control ECU connector (A34) to the skid control ECU.

NEXT: Go to next step 

1. Disconnect the connector from CAN junction connector.
   Fig 5: Identifying CAN Bus Wire (Skid Control ECU Main Bus Line) Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified value
   9 (CANH) - 20 (CANL)	Ignition switch off	108 to 132 Ω

NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (JUNCTION CONNECTOR (CAN J/C) -SKID CONTROL ECU WITH ACTUATOR) 

OK → REPLACE JUNCTION CONNECTOR