CAN COMMUNICATION SYSTEM (for LHD), Diagnostic DTC:U1002 (CAN No. 2 BUS)

DESCRIPTION

• The network gateway ECU stores this DTC when no signals can be received from the ECUs that have been memorized as those connected to the CAN movement control bus.

• When the network gateway ECU receives a response signal from the ECUs connected to the CAN movement control bus, the network gateway ECU recognizes and memorizes that the ECU is connected to the CAN movement control bus. Based on this memorized data, the network gateway ECU monitors for malfunctions in the ECUs connected to the CAN movement control bus when communicating with those ECUs. If the network gateway ECU cannot receive response signals from the ECUs that have been memorized as those connected to the CAN movement control bus, the network gateway ECU determines that a malfunction exists.

• If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [CAN branch wire]/CANL [CAN branch wire] of the ECU and/or sensor is open).

• *1: w/ Dynamic Radar Cruise Control System

• *2: w/ Pre-crash Safety System

• *3: w/ Side Monitor System

• *4: w/o Side Monitor System

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. PRECAUTION

   Note

   After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

   
   

   NEXT

2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

   
   

   1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

   
   

   NEXT

3. CHECK CAN BUS WIRE (CAN MAIN WIRE FOR DISCONNECTION, CHECK BUS LINE FOR SHORT CIRCUIT)

   

   Text in Illustration

   *1	Component with harness connected (Network Gateway ECU)

   
   

   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition Resistance Malfunction E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 54 to 69 Ω Below 53 Ω: Short in line E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 54 to 69 Ω 70 Ω or higher: Open in CAN main bus line E31-13 (CA2H) - E31-2 (BATT) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short E31-12 (CA2L) - E31-2 (BATT) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short E31-13 (CA2H) - E31-4 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short E31-12 (CA2L) - E31-4 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short

      Result

      Result	Proceed to
      NG Open in CAN main wire	A
      NG Short in line +B short Ground short	B
      OK	C

   
   

   B

   CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR SIDE) Click here

   C

   CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND) Click here

   A

4. CHECK FOR OPEN IN MAIN BUS WIRE (NO. 7 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to No. 7 Junction Connector)

      Disconnect the E74 No. 7 junction connector.

   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition E74-2 (CANH) - E74-13 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

5. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to No. 7 Junction Connector)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition E74-1 (CANH) - E74-12 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

   REPLACE NO. 7 JUNCTION CONNECTOR

6. CONNECT CONNECTOR

   
   

   1. Reconnect the E74 No. 7 junction connector.

   
   

   NEXT

7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to No. 6 Junction Connector)

      Disconnect the F79 No. 6 junction connector.

   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition F79-6 (CANH) - F79-17 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

   OK

8. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to No. 6 Junction Connector)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition F79-7 (CANH) - F79-18 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

   REPLACE NO. 6 JUNCTION CONNECTOR

9. CONNECT CONNECTOR

   
   

   1. Reconnect the F79 No. 6 junction connector.

   
   

   NEXT

10. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)

       Disconnect the E68 No. 5 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-2 (CANH) - E68-13 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)

    OK

11. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-1 (CANH) - E68-12 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

12. CONNECT CONNECTOR

    
    

    1. Reconnect the E68 No. 5 junction connector.

    
    

    NEXT

13. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 4 Junction Connector)

       Disconnect the E71 No. 4 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E71-1 (CANH) - E71-12 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    OK

14. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 4 Junction Connector)

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E71-2 (CANH) - E71-13 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

15. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

16. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 1 CAN Junction Connector)

       Disconnect the K29 No. 1 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition K29-1 (CANH) - K29-2 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

17. CONNECT CONNECTOR

    
    

    1. Reconnect the E71 No. 4 junction connector.

    
    

    NEXT

18. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NETWORK GATEWAY ECU - NO. 4 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Network Gateway ECU)

       Disconnect the E31 network gateway ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NETWORK GATEWAY ECU (NETWORK GATEWAY ECU - NO. 4 JUNCTION CONNECTOR)

    OK

    REPLACE NETWORK GATEWAY ECU Click here

19. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *1	Component with harness connected (Network Gateway ECU)

       Disconnect the E74 No. 7 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 Ω E31-13 (CA2H) - E31-4 (GND) Engine switch off 200 Ω or higher E31-12 (CA2L) - E31-4 (GND) Engine switch off 200 Ω or higher E31-13 (CA2H) - E31-2 (BATT) Engine switch off 6 kΩ or higher E31-12 (CA2L) - E31-2 (BATT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

20. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 7 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E74-3 (CANH) - E74-14 (CANL) Engine switch off 200 Ω or higher E74-3 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E74-14 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E74-3 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E74-14 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

21. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 7 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E74-4 (CANH) - E74-15 (CANL) Engine switch off 200 Ω or higher E74-4 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E74-15 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E74-4 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E74-15 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

22. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - SKID CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 7 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E74-5 (CANH) - E74-16 (CANL) Engine switch off 200 Ω or higher E74-5 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E74-16 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E74-5 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E74-16 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 7 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E74-1 (CANH) - E74-12 (CANL) Engine switch off 108 to 132 Ω E74-1 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E74-12 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E74-1 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E74-12 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 7 JUNCTION CONNECTOR

24. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 6 Junction Connector)
       *2	DLC3

       Disconnect the F79 No. 6 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition F79-6 (CANH) - F79-17 (CANL) Engine switch off 108 to 132 Ω F79-6 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher F79-17 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher F79-6 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher F79-17 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

    OK

26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *1	Component with harness connected (Network Gateway ECU)

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 Ω E31-13 (CA2H) - E31-4 (GND) Engine switch off 200 Ω or higher E31-12 (CA2L) - E31-4 (GND) Engine switch off 200 Ω or higher E31-13 (CA2H) - E31-2 (BATT) Engine switch off 6 kΩ or higher E31-12 (CA2L) - E31-2 (BATT) Engine switch off 6 kΩ or higher

       Result

       Result	Proceed to
       OK (w/o Side Monitor System)	A
       OK (w/ Side Monitor System)	B
       NG	C

    
    

    B

    CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - PARKING ASSIST ECU) Click here

    C

    CONNECT CONNECTOR Click here

    A

27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - CLEARANCE WARNING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 6 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition F79-5 (CANH) - F79-16 (CANL) Engine switch off 200 Ω or higher F79-5 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher F79-16 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher F79-5 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher F79-16 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 6 JUNCTION CONNECTOR

28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - PARKING ASSIST ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 6 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition F79-5 (CANH) - F79-16 (CANL) Engine switch off 200 Ω or higher F79-5 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher F79-16 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher F79-5 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher F79-16 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 6 JUNCTION CONNECTOR

29. CONNECT CONNECTOR

    
    

    1. Reconnect the F79 No. 6 junction connector.

    
    

    NEXT

30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)
       *2	DLC3

       Disconnect the E68 No. 5 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-2 (CANH) - E68-13 (CANL) Engine switch off 108 to 132 Ω E68-2 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E68-13 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E68-2 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E68-13 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)

    OK

31. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *1	Component with harness connected (Network Gateway ECU)

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 Ω E31-13 (CA2H) - E31-4 (GND) Engine switch off 200 Ω or higher E31-12 (CA2L) - E31-4 (GND) Engine switch off 200 Ω or higher E31-13 (CA2H) - E31-2 (BATT) Engine switch off 6 kΩ or higher E31-12 (CA2L) - E31-2 (BATT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

32. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - DISTANCE CONTROL ECU ASSEMBLY)

    Note

    For vehicles without a dynamic radar cruise control system, go to "Check for Short in CAN Bus Wires (No. 5 Junction Connector - Seat Belt Control ECU)".

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-4 (CANH) - E68-15 (CANL) Engine switch off 200 Ω or higher E68-4 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E68-15 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E68-4 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E68-15 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

33. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU)

    Note

    For vehicles without a pre-crash safety system, go to "Check for Short in CAN Bus Wires (No. 5 Junction Connector - Yaw Rate Sensor Assembly)".

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-5 (CANH) - E68-16 (CANL) Engine switch off 200 Ω or higher E68-5 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E68-16 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E68-5 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E68-16 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 5 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E68-3 (CANH) - E68-14 (CANL) Engine switch off 200 Ω or higher E68-3 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E68-14 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E68-3 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E68-14 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

35. CONNECT CONNECTOR

    
    

    1. Reconnect the E68 No. 5 junction connector.

    
    

    NEXT

36. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 4 Junction Connector)
       *2	DLC3

       Disconnect the E71 No. 4 junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E71-1 (CANH) - E71-12 (CANL) Engine switch off 108 to 132 Ω E71-1 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E71-12 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E71-1 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E71-12 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    OK

37. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - 4WD CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 4 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E71-3 (CANH) - E71-14 (CANL) Engine switch off 200 Ω or higher E71-3 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E71-14 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E71-3 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E71-14 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

38. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 4 Junction Connector)
       *2	DLC3

       Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E71-2 (CANH) - E71-13 (CANL) Engine switch off 108 to 132 Ω E71-2 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E71-13 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E71-2 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E71-13 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

39. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

40. CHECK FOR SHORT IN CAN BUS WIRES (STEERING CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Steering Control ECU)
       *2	DLC3

       Disconnect the E84 steering control ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E84-9 (CANH) - E84-20 (CANL) Engine switch off 54 to 69 Ω E84-9 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E84-20 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E84-9 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E84-20 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING CONTROL ECU (CANH, CANL)

    OK

    REPLACE STEERING CONTROL ECU Click here

41. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

42. CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Steering Angle Sensor)
       *2	DLC3

       Disconnect the E11 steering angle sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E11-10 (CANH) - E11-9 (CANL) Engine switch off 54 to 69 Ω E11-10 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E11-9 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E11-10 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E11-9 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR (CANH, CANL)

    OK

    REPLACE STEERING ANGLE SENSOR Click here

43. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

44. CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Master Cylinder Solenoid [Skid Control ECU])
       *2	DLC3

       Disconnect the A24 master cylinder solenoid (skid control ECU) connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A24-11 (CANH) - A24-25 (CANL) Engine switch off 54 to 69 Ω A24-11 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher A24-25 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher A24-11 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher A24-25 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (CANH, CANL)

    OK

    REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) Click here

45. CONNECT CONNECTOR

    
    

    1. Reconnect the E74 No. 7 junction connector.

    
    

    NEXT

46. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR - SUSPENSION CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 1 CAN Junction Connector)
       *2	DLC3

       Disconnect the K41 No. 1 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition K41-1 (CANH) - K41-2 (CANL) Engine switch off 200 Ω or higher K41-1 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher K41-2 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher K41-1 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher K41-2 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

47. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to No. 1 CAN Junction Connector)
       *2	DLC3

       Disconnect the K29 No. 1 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition K29-1 (CANH) - K29-2 (CANL) Engine switch off 108 to 132 Ω K29-1 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher K29-2 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher K29-1 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher K29-2 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

48. CONNECT CONNECTOR

    
    

    1. Reconnect the K41 No. 1 CAN junction connector.

    
    

    NEXT

49. CHECK FOR SHORT IN CAN BUS WIRES (SUSPENSION CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Suspension Control ECU)
       *2	DLC3

       Disconnect the K30 suspension control ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition K30-7 (CANH) - K30-8 (CANL) Engine switch off 54 to 69 Ω K30-7 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher K30-8 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher K30-7 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher K30-8 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SUSPENSION CONTROL ECU (CANH, CANL)

    OK

    REPLACE SUSPENSION CONTROL ECU Click here

50. CONNECT CONNECTOR

    
    

    1. Reconnect the F79 No. 6 junction connector.

    
    

    NEXT

51. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Clearance Warning ECU Assembly)
       *2	DLC3

       Disconnect the F12 clearance warning ECU assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition F12-3 (CANH) - F12-5 (CANL) Engine switch off 54 to 69 Ω F12-3 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher F12-5 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher F12-3 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher F12-5 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

52. CONNECT CONNECTOR

    
    

    1. Reconnect the F79 No. 6 junction connector.

    
    

    NEXT

53. CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Parking Assist ECU)
       *2	DLC3

       Disconnect the F75 parking assist ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition F75-40 (CANH) - F75-39 (CANL) Engine switch off 54 to 69 Ω F75-40 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher F75-39 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher F75-40 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher F75-39 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO PARKING ASSIST ECU (CANH, CANL)

    OK

    REPLACE PARKING ASSIST ECU Click here

54. CONNECT CONNECTOR

    
    

    1. Reconnect the E68 No. 5 junction connector.

    
    

    NEXT

55. CHECK FOR SHORT IN CAN BUS WIRES (DISTANCE CONTROL ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Distance Control ECU Assembly)
       *2	DLC3

       Disconnect the E86 distance control ECU assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E86-8 (CANH) - E86-9 (CANL) Engine switch off 54 to 69 Ω E86-8 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E86-9 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E86-8 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E86-9 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DISTANCE CONTROL ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE DISTANCE CONTROL ECU ASSEMBLY Click here

56. CONNECT CONNECTOR

    
    

    1. Reconnect the E68 No. 5 junction connector.

    
    

    NEXT

57. CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Seat Belt Control ECU)
       *2	DLC3

       Disconnect the E42 seat belt control ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E42-1 (CANH) - E42-2 (CANL) Engine switch off 54 to 69 Ω E42-1 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E42-2 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E42-1 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E42-2 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SEAT BELT CONTROL ECU (CANH, CANL)

    OK

    REPLACE SEAT BELT CONTROL ECU Click here

58. CONNECT CONNECTOR

    
    

    1. Reconnect the E68 No. 5 junction connector.

    
    

    NEXT

59. CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to Yaw Rate Sensor Assembly)
       *2	DLC3

       Disconnect the E50 yaw rate sensor assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E50-3 (CANH) - E50-2 (CANL) Engine switch off 54 to 69 Ω E50-3 (CANH) - E22-4 (CG) Engine switch off 200 Ω or higher E50-2 (CANL) - E22-4 (CG) Engine switch off 200 Ω or higher E50-3 (CANH) - E22-16 (BAT) Engine switch off 6 kΩ or higher E50-2 (CANL) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR ASSEMBLY (CANH, CANL)

    OK

    REPLACE YAW RATE SENSOR ASSEMBLY Click here

60. CONNECT CONNECTOR

    
    

    1. Reconnect the E71 No. 4 junction connector.

    
    

    NEXT

61. CHECK FOR SHORT IN CAN BUS WIRES (4WD CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *1	Front view of wire harness connector (to 4WD Control ECU)
       *2	DLC3

       Disconnect the A27 4WD control ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A27-19 (CAN+) - A27-20 (CAN-) Engine switch off 54 to 69 Ω A27-19 (CAN+) - E22-4 (CG) Engine switch off 200 Ω or higher A27-20 (CAN-) - E22-4 (CG) Engine switch off 200 Ω or higher A27-19 (CAN+) - E22-16 (BAT) Engine switch off 6 kΩ or higher A27-20 (CAN-) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO 4WD CONTROL ECU (CAN+, CAN-)

    OK

    REPLACE 4WD CONTROL ECU Click here

62. CONNECT CONNECTOR

    
    

    1. Reconnect the E71 No. 4 junction connector.

    
    

    NEXT

63. CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Network Gateway ECU)
       *2	DLC3

       Disconnect the E31 network gateway ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-13 (CA2H) - E31-12 (CA2L) Engine switch off 108 to 132 Ω E31-13 (CA2H) - E22-4 (CG) Engine switch off 200 Ω or higher E31-12 (CA2L) - E22-4 (CG) Engine switch off 200 Ω or higher E31-13 (CA2H) - E22-16 (BAT) Engine switch off 6 kΩ or higher E31-12 (CA2L) - E22-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NETWORK GATEWAY ECU (CA2H, CA2L)

    OK

    REPLACE NETWORK GATEWAY ECU Click here

64. CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND)

    
    
    1. 

       Text in Illustration

       *1	Rear view of wire harness connector (to Network Gateway ECU)

       Connect the cable to the negative (-) battery terminal.

       Note

       When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    2. Disconnect the E31 network gateway ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

       Standard Resistance
       Tester Connection Switch Condition Specified Condition E31-4 (GND) - Body ground Engine switch off Below 1 Ω

    4. Measure the voltage according to the value(s) in the table below.

       Standard Voltage
       Tester Connection Condition Specified Condition E31-2 (BATT) - Body ground Always 11 to 14 V E31-9 (IG2) - Body ground Engine switch on (IG) 11 to 14 V E31-10 (IG1) - Body ground Engine switch on (IG) 11 to 14 V

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE NETWORK GATEWAY ECU Click here