LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2006 >> RX 330 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Can Communication System - Diagnostics) >> Check Can Bus Line For Short To +B >> Inspection Procedure

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 CAN BUS LINE FOR SHORT TO +B (DLC3 SUB BUS LINE) 
    1. Disconnect the DLC3 sub bus line connector (J50) 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: CAN J/C And Connector Terminal Identification
        G04336612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 2: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    NG: REPAIR OR REPLACE DLC3 SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L) 

    OK: GO TO NEXT STEP. 

  2. CONNECT CONNECTOR 
    1. Reconnect the DLC3 sub bus line connector (J50) to the CAN J/C.
  3. CHECK CAN BUS LINE FOR SHORT TO +B (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 3: Disconnecting Yaw Rate Sensor Sub Bus Line Connector From CAN J/C
        G04038819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 4: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: Go to step   10 

    NG: GO TO NEXT STEP. 

  4. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
  5. CHECK CAN BUS LINE FOR SHORT TO +B (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 5: CAN J/C And Connector Terminal Identification
        G04336616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 6: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: Go to step   12 

    NG: 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 CAN BUS LINE FOR SHORT TO +B (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 7: CAN J/C And Connector Terminal Identification
        G04336618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 8: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: Go to step   14 

    NG: GO TO NEXT STEP. 

  8. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
  9. CHECK CAN BUS LINE FOR SHORT TO +B (ECM MAIN BUS LINE) 
    1. Disconnect the ECM connector (E7).
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 9: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

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

    NG: REPAIR OR REPLACE ECM MAIN BUS LINE OR CONNECTOR (CAN-H, CAN-L) 

  10. CONNECT CONNECTOR 
    1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
  11. CHECK CAN BUS LINE FOR SHORT TO +B (SKID CONTROL ECU SUB BUS LINE) 
    1. Disconnect the skid control ECU connector (S28). For connector (S28) identification, refer to Figure.
    2. Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .
      Fig 10: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: REPLACE MASTER CYLINDER SOLENOID (SEE  OVERHAUL  ) 

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

  12. CONNECT CONNECTOR 
    1. Reconnect the yaw rate sensor sub bus line connector (J48) to the CAN J/C.
  13. CHECK CAN BUS LINE FOR SHORT TO +B (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 11: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: REPLACE YAWRATE SENSOR (SEE  YAWRATE SENSOR  ) 

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

  14. CONNECT CONNECTOR 
    1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
  15. CHECK CAN BUS LINE FOR SHORT TO +B (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 12: Identifying DLC3 Connector Terminals
      G04021879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      CONNECTOR TERMINAL RESISTANCE SPECIFICATION

      Tester connection Condition Specified value
      D1-16 (BAT) - D1-6 (CANH)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher
      D1-16 (BAT) - D1-14 (CANL)
      • IG switch OFF
      • Stop light switch OFF
      		 1 MΩ or higher

    OK: REPLACE STEERING ANGLE SENSOR (SEE  STEERING SENSOR  ) 

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

scientia non olet · About LEMON Manuals