LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2006 >> GX 470 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System >> Check For An Open In One Side Of Can Sub Bus Line >> Inspection Procedure

Inspection Procedure

  1. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (SKID CONTROL ECU SUB BUS LINE) 
    1. Disconnect the skid control ECU sub bus line connector (J41) from the CAN J/C.
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.
    2. Connect the hand-held tester via the CAN VIM to the DLC3.
    3. Turn the ignition switch ON.
    4. Select "BUS CHECK" on the hand-held tester display via the CAN VIM (see DIAGNOSIS SYSTEM  ).
      Fig 1: Disconnecting Skid Control ECU Sub Bus Line Connector (J41) From CAN J/C
      G02964249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      RESULT REFERENCE

      A "ABS/VSC/TRAC" does not appear
      B 2 or more ECUs and/or sensors do not appear
    1. A Go to step   8 . 
    2. B: Go to next step. 
  2. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J41) to the CAN J/C.
    1. NEXT: Go to next step. 
  3. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (STEERING ANGLE SENSOR SUB BUS LINE) 
    1. Disconnect the steering angle sensor sub bus line connector (J42) from the CAN J/C.
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.
    2. Connect the hand-held tester via the CAN VIM to the DLC3.
    3. Turn the ignition switch ON.
    4. Select "BUS CHECK" on the hand-held tester display via the CAN VIM (see DIAGNOSIS SYSTEM  ).
      Fig 2: Disconnecting Steering Angle Sensor Sub Bus Line Connector (J42) From CAN J/C
      G02964250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      RESULT REFERENCE

      A "STEERING SENSOR" does not appear
      B 2 or more ECUs and/or sensors do not appear
    1. A Go to step   10 . 
    2. B: Go to next step. 
  4. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J42) to the CAN J/C.
    1. NEXT: Go to next step. 
  5. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (YAW RATE SENSOR SUB BUS LINE) 
    1. Disconnect the yaw rate sensor sub bus line connector (J43) from the CAN J/C.
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.
    2. Connect the hand-held tester via the CAN VIM to the DLC3.
    3. Turn the ignition switch ON.
    4. Select "BUS CHECK" on the hand-held tester display via the CAN VIM (see DIAGNOSIS SYSTEM  ).
      Fig 3: Disconnecting Yaw Rate Sensor Sub Bus Line Connector (J43) From CAN J/C
      G02964251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      RESULT REFERENCE

      A "YAW/DECELERATE" does not appear
      B 2 or more ECUs and/or sensors do not appear
    1. B Go to step   12 . 
    2. A: Go to next step. 
  6. CONNECT CONNECTOR 
    1. Reconnect the yaw rate sensor sub bus line connector (J43) to the CAN J/C.
    1. NEXT: Go to next step. 
  7. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (YAW RATE SENSOR SUB BUS LINE) 
    1. Disconnect the yaw rate sensor connector (Y1).
    2. Measure the resistance according to the value(s) in Fig 4.

      Standard: 

      Fig 4: Tester Connection Specified Value Table
      G02964252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 
    2. OK: REPLACE YAW RATE SENSOR (SEE  YAW RATE SENSOR  ) 
      Fig 5: Disconnecting Yaw Rate Sensor Connector (Y1)
      G02964253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J41) to the CAN J/C.
    1. NEXT: Go to next step. 
  9. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (SKID CONTROL ECU SUB BUS LINE) 
    1. Disconnect the skid control ECU connector (S37).
    2. Measure the resistance according to the value(s) in Fig 6.

      Standard: 

      Fig 6: Tester Connection Specified Value Table
      G02964254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Disconnecting Skid Control ECU Connector (S37)
      G02964255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE SKID CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 
    2. OK: REPLACE MASTER CYLINDER SOLENOID 
  10. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J42) to the CAN J/C.
    1. NEXT: Go to next step. 
  11. CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE (STEERING ANGLE SENSOR SUB BUS LINE) 
    1. Disconnect the steering angle sensor connector (S12).
    2. Measure the resistance according to the value(s) in Fig 8.

      Standard: 

      Fig 8: Tester Connection Specified Value Table
      G02964256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE STEERING ANGLE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 
    2. OK: REPLACE STEERING ANGLE SENSOR (SEE  STEERING SENSOR  ) 
      Fig 9: Disconnecting Steering Angle Sensor Connector (S12)
      G02964257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSPECT CAN J/C 
    1. Disconnect connectors (J39), (J40), (J41), (J42) and (J43) from the CAN J/C.
    2. Measure the resistance according to the value(s) in Fig 11.

      Standard: 

      Fig 10: Tester Connection Specified Value Table
      G02964258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 11: Identifying CAN J/C Terminal Connectors
      G02964259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE CAN J/C 
    2. OK: REPLACE ECM (SEE  ECM (2UZ-FE)  ) 
scientia non olet · About LEMON Manuals