Inspection Procedure

1. Measure the resistance according to the value(s) in RESULT REFERENCE .

   Result 

   RESULT REFERENCE
   
   

   Tester connection	Condition	Specified value	Result
   D4-6 (CANH) - D4-14 (CANL)	IG switch OFF Stop light switch OFF	108 to 132 ohms	A
   D4-6 (CANH) - D4-14 (CANL)	IG switch OFF Stop light switch OFF	132 ohms or higher	B

   Fig 1: Identifying DLC3 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: When the measured value is 132 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 BRANCH LINE OR CONNECTOR (CAN-H, CAN-L) 

A: Go to next step 

1. Disconnect the connector (E7) from the ECM.
Fig 2: Checking CAN Main Bus Line For Disconnection (ECM - CAN J/C)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   E7-33 (CANH) - E7-34 (CANL)	IG switch OFF Stop light switch OFF	108 to 132 ohms

OK: REPLACE ECM 

NG: Go to next step 

1. Disconnect the CAN main bus line connector (J10) from the CAN J/C.
   Fig 3: Identifying CAN Main Bus Line Connector (J10) From CAN J/C (Wire Harness View)

   Courtesy 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 CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

   Standard resistance 

   CONNECTOR TERMINAL RESISTANCE SPECIFICATION
   
   

   Between the terminals where the connector (J10) was connected	Condition	Specified value
   CANH - CANL	IG switch OFF Stop light switch OFF	108 to 132 ohms

   Fig 4: Identifying CAN J/C Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE CAN J/C 

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