Inspection Procedure

1. Turn the ignition switch off.
2. Measure the resistance according to the value(s) in the table below.

   Result 

   RESISTANCE SPECIFICATION
   
   

   Tester connection	Condition	Specified value	Proceed to
   D20-6 (CANH) - D20-14 (CANL)	Ignition switch off	54 to 69 Ω	A
   D20-6 (CANH) - D20-14 (CANL)	Ignition switch off	69 Ω or more	B

   Fig 1: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: When the measured value is 69 Ω or more 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 " 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. Turn the ignition switch off.
2. Disconnect the ECM connector (A55).
3. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

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

OK : REPLACE ECM 

Fig 2: Identifying ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step 

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

1. Disconnect the CAN main bus line connector (A56) from the CAN J/C A side (with earth terminal).
   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(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified value
   A56-1 (CANH) - A56-2 (CANL)	Ignition switch off	108 to 132 Ω

NG: REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (D50-D41) 

Fig 3: Identifying CAN Main Bus Line Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Reconnect the CAN main bus line connector (A56) to the CAN J/C Aside (with earth terminal).

1. Turn the ignition switch off.
2. Disconnect the skid control ECU connector (A34).
3. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

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

NG:  Go to step  8

Fig 4: Identifying Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE SKID CONTROL ECU WITH ACTUATOR 

1. Turn the ignition switch off.
2. Disconnect the skid control ECU connector (A40).
3. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified value
   A40-26 (CANH) - A40-15 (CANL)	Ignition switch off	108 to 132 Ω

OK : REPLACE SKID CONTROL ECU WITH ACTUATOR 

Fig 5: Identifying Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step 

1. Reconnect the skid control ECU connector (A34) or (A40) to the skid control ECU.

1. Disconnect the CAN main bus line connector (A44) from the J/C B side (without earth terminal).
   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(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified value
   A44-1 (CANH) - A44-2 (CANL)	Ignition switch off	108 to 132 Ω

NG: REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (D44-A34(A40)) 

Fig 6: Identifying CAN Main Bus Line Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE JUNCTION CONNECTOR