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Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  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 (J47) 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.
      Fig 1: Disconnecting Yaw Rate Sensor Sub Bus Line Connector From CAN J/C
      G04038819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 ).

      Result: 

      RESULT RESISTANCE

      A "ABS/VSC/TRAC" does not appear
      B 2 or more ECUs and/or sensors do not appear

    A: Go to step   8 

    B: GO TO NEXT STEP. 

  2. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
  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 (J49) 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.
      Fig 2: CAN J/C And Connector Terminal Identification
      G04336641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 ).

      Result: 

      RESULT RESISTANCE

      A "STEERING SENSOR" does not appear
      B 2 or more ECUs and/or sensors do not appear

    A: Go to step   10 

    B: GO TO NEXT STEP. 

  4. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
  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 (J48) 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.
      Fig 3: CAN J/C And Connector Terminal Identification
      G04336642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 ).

      Result: 

      RESULT RESISTANCE

      A "YAW /DECELERAT" does not appear
      B 2 or more ECUs and/or sensors do not appear

    B: Go to step   12 

    A: GO TO NEXT STEP. 

  6. CONNECT CONNECTOR 
    1. Reconnect the yaw rate sensor sub bus line connector (J48) to the CAN J/C.
  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 CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 4: Identifying Yaw Rate Sensor Connector (Y1)
      G04336643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      Y1-2 (CANL) - Y1-3 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 54 to 69 Ω

    NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 

    OK: REPLACE YAWRATE SENSOR (SEE  YAWRATE SENSOR  ) 

  8. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
  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 (S28).
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 5: Identifying Skid Control ECU Connector Terminals
      G04336644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      S28-11 (CANH) - S28-25 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 54 to 69 Ω

    NG: REPAIR OR REPLACE SKID CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 

    OK: REPLACE MASTER CYLINDER SOLENOID 

  10. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
  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 (S11).
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 6: Identifying Steering Sensor Wiring Harness Terminals
      G04336645Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      S11-3 (CANH) - S11-11 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 54 to 69 Ω

    NG: REPAIR OR REPLACE STEERING ANGLE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H or CAN-L) 

    OK: REPLACE STEERING ANGLE SENSOR (SEE  STEERING SENSOR  ) 

  12. INSPECT CAN J/C 
    1. Disconnect connectors (J47), (J48), (J49), (J50) and (J51) from the CAN J/C.
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 7: Inspecting CAN J/C Connector
      G04336646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      1 (CANH) - 2 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 108 to 132 Ω

    NG: REPLACE CAN J/C 

    OK: REPLACE ECM (SEE  ECM (1GR-FE)  OR  ECM (2UZ-FE)  ) 

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