CAN COMMUNICATION SYSTEM(for LHD), Diagnostic DTC:U1005

DESCRIPTION

• The skid control ECU assembly stores this DTC when no signals can be received from the ECUs that have been memorized as those connected to the steering bus circuit.

• When the skid control ECU assembly receives a response signal from the ECUs connected to the steering bus circuit, the skid control ECU assembly recognizes and memorizes that the ECU is connected to the steering bus circuit. Based on this memorized data, the skid control ECU assembly monitors for malfunctions in the ECUs connected to the steering bus circuit when communicating with those ECUs. If the skid control ECU assembly cannot receive response signals from the ECUs that have been memorized as those connected to the steering bus circuit, the skid control ECU assembly 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/ Pre-crash Safety System

• *2: w/ Active Stabilizer Suspension System

• *3: w/ Pre-crash Intelligent Headrest

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. PRECAUTION

   Note

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

   
   

   NEXT

2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

   
   

   1. Disconnect the cable from the negative (-) auxiliary 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 (-) auxiliary 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, BUS LINE FOR SHORT CIRCUIT)

   
   

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

      

      Text in Illustration

      *a

      Component with harness connected (ECM)

      -

      -

      Standard Resistance

      Tester Connection Switch Condition Specified Condition Resistance: Malfunction A13-12 (CA1H) - A13-11 (CA1L) Power switch off 54 to 69 Ω Below 53 Ω: Short in line A13-12 (CA1H) - A13-11 (CA1L) Power switch off 54 to 69 Ω Higher than 70 Ω: Open in CAN main bus line A13-12 (CA1H) - A14-7 (BATT) Power switch off 6 kΩ or higher Below 6 kΩ: +B short A13-11 (CA1L) - A14-7 (BATT) Power switch off 6 kΩ or higher Below 6 kΩ: +B short A13-12 (CA1H) - E3-1 (E1) Power switch off 200 Ω or higher Below 200 Ω: Ground short A13-11 (CA1L) - E3-1 (E1) Power 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. 5 JUNCTION CONNECTOR SIDE) Click here

   C

   CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND) Click here

   A

4. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - ECM)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 2 Junction Connector)

      Disconnect the No. 2 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition L97-11 (CANH) - L97-22 (CANL) Power switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

5. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition L97-10 (CANH) - L97-21 (CANL) Power switch off 108 to 132 Ω

   
   

   OK

   REPLACE NO. 2 JUNCTION CONNECTOR

   NG

   CONNECT CONNECTOR Click here

6. CONNECT CONNECTOR

   
   

   1. Reconnect the L97 No. 2 junction connector.

   
   

   NEXT

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

   
   
   1. 

      Text in Illustration

      *A	w/o Active Stabilizer Suspension System
      *B	w/ Active Stabilizer Suspension System
      *a	Rear view of wire harness connector (to No. 1 Junction Connector)

      Disconnect the No. 1 junction connector.

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

      Standard Resistance
      w/o Active Stabilizer Suspension System Tester Connection Switch Condition Specified Condition A67-3 (CANH) - A67-14 (CANL) Power switch off 108 to 132 Ω
      w/ Active Stabilizer Suspension System Tester Connection Switch Condition Specified Condition A67-5 (CANH) - A67-16 (CANL) Power switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

8. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

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

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition A67-1 (CANH) - A67-12 (CANL) Power switch off 108 to 132 Ω

   
   

   OK

   REPLACE NO. 1 JUNCTION CONNECTOR

   NG

   REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

9. CONNECT CONNECTOR

   
   

   1. Reconnect the A67 No. 1 junction connector.

   
   

   NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to ECM)

       Disconnect the ECM connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A13-12 (CA1H) - A13-11 (CA1L) Power switch off 108 to 132 Ω

       Result

       Result	Proceed to
       OK	A
       NG (w/o Active Stabilizer Suspension System)	B
       NG (w/ Active Stabilizer Suspension System)	C

    
    

    A

    REPLACE ECM Click here

    B

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (ECM - NO. 1 JUNCTION CONNECTOR)

    C

11. CONNECT CONNECTOR

    
    

    1. Reconnect the A13 ECM connector.

    
    

    NEXT

12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - ECM)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Front Active Stabilizer Control ECU Assembly)

       Disconnect the front active stabilizer 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 A75-10 (CT+) - A75-7 (CT-) Power switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - ECM)

    OK

13. CHECK FOR OPEN IN CAN BUS MAIN WIRE (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - NO. 1 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Front Active Stabilizer Control ECU Assembly)

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A75-1 (LCN+) - A75-8 (LCN-) Power switch off 108 to 132 Ω

    
    

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - NO. 1 JUNCTION CONNECTOR)

14. CONNECT CONNECTOR

    
    

    1. Reconnect the L97 No. 2 junction connector.

    
    

    NEXT

15. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

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

       Disconnect the 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 S58-1 (CANH) - S58-12 (CANL) Power switch off 108 to 132 Ω

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

16. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	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 S58-2 (CANH) - S58-13 (CANL) Power switch off 108 to 132 Ω

    
    

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

17. CONNECT CONNECTOR

    
    

    1. Reconnect the S58 No. 4 junction connector.

    
    

    NEXT

18. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

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

       Disconnect the 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 L99-4 (CANH) - L99-15 (CANL) Power switch off 108 to 132 Ω

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

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

    
    
    1. 

       Text in Illustration

       *a	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 L99-3 (CANH) - L99-14 (CANL) Power switch off 108 to 132 Ω

    
    

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

    NG

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

20. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 No. 5 junction connector.

    
    

    NEXT

21. CHECK FOR OPEN IN CAN BUS MAIN WIRE (POWER STEERING ECU ASSEMBLY - NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Power Steering ECU Assembly)

       Disconnect the power steering ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A44-2 (CA1H) - A44-3 (CA1L) Power switch off 108 to 132 Ω

    
    

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER STEERING ECU ASSEMBLY (POWER STEERING ECU ASSEMBLY - NO. 5 JUNCTION CONNECTOR)

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

    
    

    1. Disconnect the L99 No. 5 junction connector.

       

       Text in Illustration

       *a

       Component with harness connected (ECM)

       -

       -

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A13-12 (CA1H) - A13-11 (CA1L) Power switch off 108 to 132 Ω A13-12 (CA1H) - E3-1 (E1) Power switch off 200 Ω or higher A13-11 (CA1L) - E3-1 (E1) Power switch off 200 Ω or higher A13-12 (CA1H) - A14-7 (BATT) Power switch off 6 kΩ or higher A13-11 (CA1L) - A14-7 (BATT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - SUSPENSION CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L99-1 (CANH) - L99-12 (CANL) Power switch off 200 Ω or higher L99-1 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L99-12 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L99-1 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L99-12 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

    Note

    For vehicles without a pre-crash intelligent headrest, go to "Check for Short in CAN Bus Wires (No. 5 Junction Connector - Steering Control ECU)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L99-2 (CANH) - L99-13 (CANL) Power switch off 200 Ω or higher L99-2 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L99-13 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L99-2 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L99-13 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - STEERING CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L99-5 (CANH) - L99-16 (CANL) Power switch off 200 Ω or higher L99-5 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L99-16 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L99-5 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L99-16 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L99-4 (CANH) - L99-15 (CANL) Power switch off 108 to 132 Ω L99-4 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L99-15 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L99-4 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L99-15 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

    NG

    CONNECT CONNECTOR Click here

27. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 No. 5 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Suspension Control ECU)
       *b	Front view of DLC3

       Disconnect the 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 L88-7 (CANH) - L88-8 (CANL) Power switch off 54 to 69 Ω L88-7 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L88-8 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L88-7 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L88-8 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE SUSPENSION CONTROL ECU Click here

    NG

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

29. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 No. 5 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Network Gateway ECU)
       *b	Front view of DLC3

       Disconnect the 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 L102-16 (CA1H) - L102-15 (CA1L) Power switch off 54 to 69 Ω L102-16 (CA1H) - L31-4 (CG) Power switch off 200 Ω or higher L102-15 (CA1L) - L31-4 (CG) Power switch off 200 Ω or higher L102-16 (CA1H) - L31-16 (BAT) Power switch off 6 kΩ or higher L102-15 (CA1L) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE NETWORK GATEWAY ECU

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NETWORK GATEWAY ECU (CA1H, CA1L)

31. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 No. 5 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Steering Control ECU)
       *b	Front view of DLC3

       Disconnect the 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 A41-9 (CANH) - A41-20 (CANL) Power switch off 54 to 69 Ω A41-9 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A41-20 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A41-9 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A41-20 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE STEERING CONTROL ECU Click here

    NG

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

33. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 No. 5 junction connector.

    
    

    NEXT

34. CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Power Steering ECU Assembly)
       *b	Front view of DLC3

       Disconnect the power steering ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A44-2 (CA1H) - A44-3 (CA1L) Power switch off 108 to 132 Ω A44-2 (CA1H) - L31-4 (CG) Power switch off 200 Ω or higher A44-3 (CA1L) - L31-4 (CG) Power switch off 200 Ω or higher A44-2 (CA1H) - L31-16 (BAT) Power switch off 6 kΩ or higher A44-3 (CA1L) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER STEERING ECU ASSEMBLY (CA1H, CA1L)

35. CONNECT CONNECTOR

    
    

    1. Reconnect the L99 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

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)
       *b	Front view of DLC3

       Disconnect the 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 S58-1 (CANH) - S58-12 (CANL) Power switch off 108 to 132 Ω S58-1 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher S58-12 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher S58-1 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher S58-12 (CANL) - L31-16 (BAT) Power 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 SIDE)

    
    

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

       

       Text in Illustration

       *a

       Component with harness connected (ECM)

       -

       -

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A13-12 (CA1H) - A13-11 (CA1L) Power switch off 108 to 132 Ω A13-12 (CA1H) - E3-1 (E1) Power switch off 200 Ω or higher A13-11 (CA1L) - E3-1 (E1) Power switch off 200 Ω or higher A13-12 (CA1H) - A14-7 (BATT) Power switch off 6 kΩ or higher A13-11 (CA1L) - A14-7 (BATT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

38. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 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. 4 Junction Connector - Rear Active Stabilizer Control ECU Assembly)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition S58-3 (CANH) - S58-14 (CANL) Power switch off 200 Ω or higher S58-3 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher S58-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher S58-3 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher S58-14 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

39. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY)

    Note

    For vehicles without an active stabilizer suspension system, replace No. 4 junction connector.

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition S58-4 (CANH) - S58-15 (CANL) Power switch off 200 Ω or higher S58-4 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher S58-15 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher S58-4 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher S58-15 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

    NG

    CONNECT CONNECTOR Click here

40. CONNECT CONNECTOR

    
    

    1. Reconnect the S58 No. 4 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Seat Belt Control ECU)
       *b	Front view of DLC3

       Disconnect the 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 S47-1 (CANH) - S47-2 (CANL) Power switch off 54 to 69 Ω S47-1 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher S47-2 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher S47-1 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher S47-2 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE SEAT BELT CONTROL ECU Click here

    NG

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

42. CONNECT CONNECTOR

    
    

    1. Reconnect the S58 No. 4 junction connector.

    
    

    NEXT

43. CHECK FOR SHORT IN CAN BUS WIRES (REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Rear Active Stabilizer Control ECU Assembly)
       *b	Front view of DLC3

       Disconnect the rear active stabilizer 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 S74-1 (LCN+) - S74-8 (LCN-) Power switch off 54 to 69 Ω S74-1 (LCN+) - L31-4 (CG) Power switch off 200 Ω or higher S74-8 (LCN-) - L31-4 (CG) Power switch off 200 Ω or higher S74-1 (LCN+) - L31-16 (BAT) Power switch off 6 kΩ or higher S74-8 (LCN-) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY (LCN+, LCN-)

44. CONNECT CONNECTOR

    
    

    1. Reconnect the S58 No. 4 junction connector.

    
    

    NEXT

45. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 2 Junction Connector)
       *b	Front view of DLC3

       Disconnect the No. 2 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L97-10 (CANH) - L97-21 (CANL) Power switch off 108 to 132 Ω L97-10 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L97-21 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L97-10 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L97-21 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    OK

46. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR SIDE)

    
    

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

       

       Text in Illustration

       *a

       Component with harness connected (ECM)

       -

       -

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A13-12 (CA1H) - A13-11 (CA1L) Power switch off 108 to 132 Ω A13-12 (CA1H) - E3-1 (E1) Power switch off 200 Ω or higher A13-11 (CA1L) - E3-1 (E1) Power switch off 200 Ω or higher A13-12 (CA1H) - A14-7 (BATT) Power switch off 6 kΩ or higher A13-11 (CA1L) - A14-7 (BATT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

47. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 2 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L97-8 (CANH) - L97-19 (CANL) Power switch off 200 Ω or higher L97-8 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L97-19 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L97-8 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L97-19 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

48. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - YAW RATE SENSOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 2 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L97-9 (CANH) - L97-20 (CANL) Power switch off 200 Ω or higher L97-9 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L97-20 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L97-9 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L97-20 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE NO. 2 JUNCTION CONNECTOR

    NG

    CONNECT CONNECTOR Click here

49. CONNECT CONNECTOR

    
    

    1. Reconnect the L97 No. 2 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Steering Angle Sensor)
       *b	Front view of DLC3

       Disconnect the 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 L21-10 (CANH) - L21-9 (CANL) Power switch off 54 to 69 Ω L21-10 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L21-9 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L21-10 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L21-9 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE STEERING ANGLE SENSOR Click here

    NG

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

51. CONNECT CONNECTOR

    
    

    1. Reconnect the L97 No. 2 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Yaw Rate Sensor)
       *b	Front view of DLC3

       Disconnect the yaw rate sensor connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L71-3 (CANH) - L71-2 (CANL) Power switch off 54 to 69 Ω L71-3 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher L71-2 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher L71-3 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher L71-2 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE YAW RATE SENSOR Click here

    NG

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

53. CONNECT CONNECTOR

    
    

    1. Reconnect the L97 No. 2 junction connector.

    
    

    NEXT

54. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 Junction Connector)
       *b	Front view of DLC3

       Disconnect the No. 1 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A67-1 (CANH) - A67-12 (CANL) Power switch off 108 to 132 Ω A67-1 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A67-12 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A67-1 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A67-12 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

    OK

55. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - SKID CONTROL ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A67-2 (CANH) - A67-13 (CANL) Power switch off 200 Ω or higher A67-2 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A67-13 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A67-2 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A67-13 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

56. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

    Note

    For vehicles without a pre-crash safety system, go to "Check for Short in CAN Bus Wires (No. 1 Junction Connector - ECM)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A67-4 (CANH) - A67-15 (CANL) Power switch off 200 Ω or higher A67-4 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A67-15 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A67-4 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A67-15 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

57. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - ECM)

    
    
    1. 

       Text in Illustration

       *A	w/o Active Stabilizer Suspension System
       *B	w/ Active Stabilizer Suspension System
       *a	Rear view of wire harness connector (to No. 1 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       w/o Active Stabilizer Suspension System Tester Connection Switch Condition Specified Condition A67-3 (CANH) - A67-14 (CANL) Power switch off 108 to 132 Ω A67-3 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A67-14 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A67-3 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A67-14 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher
       w/ Active Stabilizer Suspension System Tester Connection Switch Condition Specified Condition A67-5 (CANH) - A67-16 (CANL) Power switch off 108 to 132 Ω A67-5 (CANH) - L31-4 (CG) Power switch off 200 Ω or higher A67-16 (CANL) - L31-4 (CG) Power switch off 200 Ω or higher A67-5 (CANH) - L31-16 (BAT) Power switch off 6 kΩ or higher A67-16 (CANL) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE NO. 1 JUNCTION CONNECTOR

    NG

    CONNECT CONNECTOR Click here

58. CONNECT CONNECTOR

    
    

    1. Reconnect the A67 No. 1 junction connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Skid Control ECU Assembly)
       *b	Front view of DLC3

       Disconnect the skid 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 A21-30 (CA1H) - A21-29 (CA1L) Power switch off 54 to 69 Ω A21-30 (CA1H) - L31-4 (CG) Power switch off 200 Ω or higher A21-29 (CA1L) - L31-4 (CG) Power switch off 200 Ω or higher A21-30 (CA1H) - L31-16 (BAT) Power switch off 6 kΩ or higher A21-29 (CA1L) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE SKID CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU ASSEMBLY (CA1H, CA1L)

60. CONNECT CONNECTOR

    
    

    1. Reconnect the A67 No. 1 junction connector.

    
    

    NEXT

61. CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Driving Support ECU Assembly)
       *b	Front view of DLC3

       Disconnect the driving support ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A33-1 (CA1H) - A33-2 (CA1L) Power switch off 54 to 69 Ω A33-1 (CA1H) - L31-4 (CG) Power switch off 200 Ω or higher A33-2 (CA1L) - L31-4 (CG) Power switch off 200 Ω or higher A33-1 (CA1H) - L31-16 (BAT) Power switch off 6 kΩ or higher A33-2 (CA1L) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CA1H, CA1L)

62. CONNECT CONNECTOR

    
    

    1. Reconnect the A67 No. 1 junction connector.

    
    

    NEXT

63. CHECK FOR SHORT IN CAN BUS WIRES (ECM)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to ECM)
       *b	Front view of DLC3

       Disconnect the ECM connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A13-12 (CA1H) - A13-11 (CA1L) Power switch off 108 to 132 Ω A13-12 (CA1H) - L31-4 (CG) Power switch off 200 Ω or higher A13-11 (CA1L) - L31-4 (CG) Power switch off 200 Ω or higher A13-12 (CA1H) - L31-16 (BAT) Power switch off 6 kΩ or higher A13-11 (CA1L) - L31-16 (BAT) Power switch off 6 kΩ or higher

       Result

       Result	Proceed to
       OK	A
       NG (w/o Active Stabilizer Suspension System)	B
       NG (w/ Active Stabilizer Suspension System)	C

    
    

    A

    REPLACE ECM Click here

    B

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CA1H, CA1L)

    C

64. CONNECTOR

    
    

    1. Reconnect the A13 ECM connector.

    
    

    NEXT

65. CHECK FOR SHORT IN CAN BUS WIRES (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - ECM)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Front Active Stabilizer Control ECU Assembly)
       *b	Front view of DLC3

       Disconnect the front active stabilizer 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 A75-10 (CT+) - A75-7 (CT-) Power switch off 54 to 69 Ω A75-10 (CT+) - L31-4 (CG) Power switch off 200 Ω or higher A75-7 (CT-) - L31-4 (CG) Power switch off 200 Ω or higher A75-10 (CT+) - L31-16 (BAT) Power switch off 6 kΩ or higher A75-7 (CT-) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - ECM)

    OK

66. CHECK FOR SHORT IN CAN BUS WIRES (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - NO. 1 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Front Active Stabilizer Control ECU Assembly)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A75-1 (LCN+) - A75-8 (LCN-) Power switch off 54 to 69 Ω A75-1 (LCN+) - L31-4 (CG) Power switch off 200 Ω or higher A75-8 (LCN-) - L31-4 (CG) Power switch off 200 Ω or higher A75-1 (LCN+) - L31-16 (BAT) Power switch off 6 kΩ or higher A75-8 (LCN-) - L31-16 (BAT) Power switch off 6 kΩ or higher

    
    

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY - NO. 1 JUNCTION CONNECTOR)

67. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Skid Control ECU Assembly)

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

       Note

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

    2. Disconnect the skid control ECU assembly connectors.

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

       Standard Voltage
       Tester Connection Condition Specified Condition A19-43 (+BI1) - Body ground Always 11 to 14 V A21-38 (+BI2) - Body ground Always 11 to 14 V A19-29 (+BI3) - Body ground Always 11 to 14 V A21-22 (+BI4) - Body ground Always 11 to 14 V A19-46 (IG1) - Body ground Power switch on (IG) 11 to 14 V A21-46 (IG2) - Body ground Power switch on (IG) 11 to 14 V

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

       Standard Resistance
       Tester Connection Condition Specified Condition A19-1 (GND) - Body ground Always Below 1 Ω A21-1 (GND4) - Body ground Always Below 1 Ω

    
    

    OK

    REPLACE SKID CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR