Open in One Side of CAN Branch Line: Procedure

1. Confirm the systems (ECUs and sensors), which use CAN communication, equipped on the vehicle. Refer to DIAGNOSIS SYSTEM .
2. Using the Techstream, select and perform "CAN Bus Check". Refer to DIAGNOSIS SYSTEM .
3. Observe the screen for approximately 1 minute to check the ECUs and sensors that are not displayed on the screen and also those that repeatedly appear and disappear from the screen.
4. Disconnect the branch line connectors, which are connected to the ECUs or sensors that are not displayed on the screen, from the CAN J/C.
   Fig 1: Identifying CAN LH J/C Connectors Wiring Diagram

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Identifying CAN LH J/C Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WIRING COLOR:
   
   

   CAN LH J/C A Side (w/ Earth Terminal)	Code	Color (CANH Side)	Color (CANL Side)
   Steering angle sensor	J1	P	W
   ECM	J2	B	W
   Seat belt control ECU (w/ Pre-collision system)	J3	V	W
   Center airbag sensor	J4	R	W

   WIRING COLOR:
   
   

   CAN LH J/C B Side (w/o Earth Terminal)	Code	Color (CANH Side)	Color (CANL Side)
   Yaw rate sensor	J5	P	W
   Skid control ECU	J6	R	W
   CAN main bus line (bus line connecting CAN LH J/C and CAN RH J/C)	J7	B	W
   DLC3	J8	G	W
   Distance control ECU (w/ Dynamic radar cruise control system)	J9	GR	W

   Fig 3: Identifying CAN RH J/C Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WIRING CLOR:
   
   

   CAN RH J/C A Side (w/Earth Terminal)	Code	Color (CANH Side)	Color (CANL Side)
   CAN main bus line (bus line connecting CAN RH J/C and CAN LH J/C)	J81	B	W
   Power steering ECU	J82	P	W

   WIRING CLOR:
   
   

   CAN RH J/C B Side (w/o arth Terminal)	Code	Color (CANH Side)	Color (CANL Side)
   Gateway ECU	J84	B	W
   4WD Control ECU (for 4WD)	J86	V	W

   HINT: 

   • Connecting locations of the connectors shown in the above tables are those of a vehicle whose connector locations have never been changed.
   • If the connector locations differ from those shown in the above tables, identify each connector according to the color of the bus lines.
5. Check that the ECUs and sensors, which repeatedly appeared and disappeared from the "CAN Bus Check" screen, are constantly displayed.
6. Perform the communication stop mode check for the ECUs and sensors which correspond to the disconnected branch line connectors. Refer to PROBLEM SYMPTOMS TABLE .

NEXT → GO TO CORRESPONDING COMMUNICATION STOP MODE